TRSSS/TRSX SCT UTC TRSX CTTS SRVC R... 5 X R TC... 5 lphabetical ndex...5 TC o. ndex...5 RCUTS... 7 recaution for Supplemental Restraint System (SRS) "R " and "S T R-T- SR"...7 recaution for n oard iagnosis () System of /T and ngine...7 recaution for /T ssembly or TC Replacement...7 recaution...8 Service otice or recaution...9 RR...10 Special Service Tool...10 Commercial Service Tool...12 /T U...13 Changing /T luid...13 Checking /T luid...13 /T luid Cooler Cleaning...14 /T CTR SYST...18 Cross-Sectional View...18 Shift echanism...18 TC unction...30 nput/utput Signal of TC...32 C Communication...32 ine ressure Control...32 Shift Control...33 ock-up Control...34 R STC () SYST...36 ntroduction...36 - unction for /T System...36 ne or Two Trip etection ogic of -...36 - iagnostic Trouble Code (TC)...36 alfunction ndicator amp ()...38 TRU SS...39 TC nspection riority Chart...39 ail-safe...39 ow To erform Trouble iagnosis for Quick and ccurate Repair...41 /T lectrical arts ocation...47 Circuit iagram...49 nspections efore Trouble iagnosis...49 Check efore ngine s Started...54 Check at dle...54 Cruise Test - art 1...55 Cruise Test - art 2...57 Cruise Test - art 3...57 Shift Schedule...58 Symptom Chart...59 TC nput/utput Signal Reference Value...66 CSUT- unction (TRSSS)...69 iagnosis rocedure...74 TC U1000 C CUC...77 escription...77 n oard iagnosis ogic...77 ossible Cause...77 TC Confirmation rocedure...77 Wiring iagram - - C...78 iagnosis rocedure...79 TC 0500 VC S SSR TR...80 escription...80 n oard iagnosis ogic...80 ossible Cause...80 TC Confirmation rocedure...80 iagnosis rocedure...80 TC 0613 TC RCSSR...82 escription...82 n oard iagnosis ogic...82 ossible Cause...82 TC Confirmation rocedure...82 iagnosis rocedure...82-1
TC 0705 R/UTR ST SWTC... 83 escription... 83 n oard iagnosis ogic... 83 ossible Cause... 83 TC Confirmation rocedure... 83 Wiring iagram - - /SW... 84 iagnosis rocedure... 85 Component nspection... 87 TC 0710 /T U TRUR S- SR CRCUT... 88 escription... 88 n oard iagnosis ogic... 88 ossible Cause... 88 TC Confirmation rocedure... 88 Wiring iagram - - TS... 89 iagnosis rocedure... 90 Component nspection... 91 TC 0711 U TRUR SSR RRC... 93 escription... 93 n oard iagnosis ogic... 93 ossible Cause... 93 TC Confirmation rocedure... 93 Wiring iagram - - TS... 94 iagnosis rocedure... 95 Component nspection... 96 TC 0717 TUR RVUT S- SR CRCUT... 98 escription... 98 n oard iagnosis ogic... 98 ossible Cause... 98 TC Confirmation rocedure... 98 Wiring iagram - - TRSC... 99 iagnosis rocedure...100 Component nspection...100 TC 0722 VC S SSR /T (RVUT SSR) CRCUT... 102 escription...102 n oard iagnosis ogic...102 ossible Cause...102 TC Confirmation rocedure...102 Wiring iagram - - VSSC...103 iagnosis rocedure...104 Component nspection...104 TC 0726 S UT CRCUT RRC... 106 escription...106 n oard iagnosis ogic...106 ossible Cause...106 TC Confirmation rocedure...106 iagnosis rocedure...106 TC 0731 /T 1ST R UCT... 108 escription...108-2 n oard iagnosis ogic... 108 ossible Cause... 108 TC Confirmation rocedure... 108 Wiring iagram - - 1STS... 109 iagnosis rocedure... 110 TC 0732 /T 2 R UCT...111 escription... 111 n oard iagnosis ogic... 111 ossible Cause... 111 TC Confirmation rocedure... 111 Wiring iagram - - 2S... 113 iagnosis rocedure... 115 TC 0733 /T 3R R UCT...116 escription... 116 n oard iagnosis ogic... 116 ossible Cause... 116 TC Confirmation rocedure... 116 Wiring iagram - - 3RS... 117 iagnosis rocedure... 119 TC 0734 /T 4T R UCT...120 escription... 120 n oard iagnosis ogic... 120 ossible Cause... 120 TC Confirmation rocedure... 120 Wiring iagram - - 4TS... 121 iagnosis rocedure... 122 TC 0735 /T 5T R UCT...123 escription... 123 n oard iagnosis ogic... 123 ossible Cause... 123 TC Confirmation rocedure... 123 Wiring iagram - - 5TS... 124 iagnosis rocedure... 126 TC 0744 /T TCC S/V UCT (C- U)...127 escription... 127 n oard iagnosis ogic... 127 ossible Cause... 127 TC Confirmation rocedure... 127 Wiring iagram - - TCCS... 128 iagnosis rocedure... 129 TC 0745 RSSUR CTR S- VV ( RSSUR)...130 escription... 130 n oard iagnosis ogic... 130 ossible Cause... 130 TC Confirmation rocedure... 130 Wiring iagram - - C/... 131 iagnosis rocedure... 132 Component nspection... 134 TC 0750 ST S VV...135 escription... 135 n oard iagnosis ogic... 135
ossible Cause... 135 TC Confirmation rocedure... 135 Wiring iagram - - SSV/... 136 iagnosis rocedure... 137 Component nspection... 138 TC 0755 ST S VV... 140 escription... 140 n oard iagnosis ogic... 140 ossible Cause... 140 TC Confirmation rocedure... 140 Wiring iagram - - SSV/... 141 iagnosis rocedure... 142 Component nspection... 143 TC 0760 ST S VV C... 145 escription... 145 n oard iagnosis ogic... 145 ossible Cause... 145 TC Confirmation rocedure... 145 Wiring iagram - - SSV/C... 146 iagnosis rocedure... 147 Component nspection... 148 TC 0762 ST S VV C STUC... 150 escription... 150 n oard iagnosis ogic... 150 ossible Cause... 150 TC Confirmation rocedure... 150 Wiring iagram - - SSV/CS... 151 iagnosis rocedure... 152 Component nspection... 153 TC 0765 ST S VV... 155 escription... 155 n oard iagnosis ogic... 155 ossible Cause... 155 TC Confirmation rocedure... 155 Wiring iagram - - SSV/... 156 iagnosis rocedure... 157 Component nspection... 158 TC 0770 ST S VV... 160 escription... 160 n oard iagnosis ogic... 160 ossible Cause... 160 TC Confirmation rocedure... 160 Wiring iagram - - SSV/... 161 iagnosis rocedure... 162 Component nspection... 163 TC 0775 RSSUR CTR S- VV (ST RSSUR)... 165 escription... 165 n oard iagnosis ogic... 165 ossible Cause... 165 TC Confirmation rocedure... 165 Wiring iagram - - C/... 166 iagnosis rocedure... 167 Component nspection...168 TC 0780 ST... 170 escription...170 n oard iagnosis ogic...170 ossible Cause...170 TC Confirmation rocedure...170 Wiring iagram - - STC...171 iagnosis rocedure...173 TC 0795 RSSUR CTR S- VV C (TCC ST RS- SUR)... 174 escription...174 n oard iagnosis ogic...174 ossible Cause...174 TC Confirmation rocedure...174 Wiring iagram - - C/C...175 iagnosis rocedure...176 Component nspection...177 TC 0797 RSSUR CTR S- VV C STUC... 179 escription...179 n oard iagnosis ogic...179 ossible Cause...179 TC Confirmation rocedure...179 Wiring iagram - - C/CS...180 iagnosis rocedure...181 Component nspection...182 TC 0825 VR SWTC CRCUT... 184 escription...184 n oard iagnosis ogic...184 ossible Cause...184 TC Confirmation rocedure...184 Wiring iagram - - VRSW...185 iagnosis rocedure...186 Component nspection...187 TC 0882 TC WR UT S... 188 escription...188 n oard iagnosis ogic...188 ossible Cause...188 TC Confirmation rocedure...188 Wiring iagram - - WR/...189 iagnosis rocedure...190 Component nspection...191 TC 1726 CTRC TRTT C- TR SYST... 192 escription...192 TRU SS R SYTS... 193 / ndicator amp oes ot Come n...193 ngine Cannot e Started in "" or "" osition..194 n "" osition, Vehicle oves When ushed...195 n "" osition, Vehicle oves...195 arge Shock ("" to "" osition)...196 Vehicle oes ot Creep ackward in "R" osition..196-3
Vehicle oes ot Creep orward in "" or "" osition...197 Vehicle Cannot e Started from 1...198 /T oes ot Shift: 1Æ 2...199 /T oes ot Shift: 2Æ 3...200 /T oes ot Shift: 3Æ 4...201 /T oes ot Shift: 4Æ 5...202 /T oes ot erform ock-up...203 /T oes ot old ock-up Condition...203 ock-up s ot Released...204 /T oes ot Shift: 5th gear Æ 4th gear, When ever Switch "" Æ ""...205 /T oes ot Shift: 4th gear Æ 3rd gear, When Selector ever "" Æ "" osition...206 /T oes ot Shift: 3rd gear Æ 2nd gear, When ever Switch "" Æ ""...207 /T oes ot Shift: 2nd gear Æ 1st gear, When Release ccelerator edal...207 Vehicle oes ot ecelerate y ngine rake...208 TC Self-iagnosis oes ot ctivate...209 /T ST C SYST... 211 escription...211 Shift ock System lectrical arts ocation...211 Wiring iagram - - ST...212 iagnosis rocedure...212 ST CTR SYST... 215 Removal and nstallation...215 Y TRC C... 217 Component...217 Removal...217 nstallation...218 -VC SRVC... 219 Revolution Sensor Replacement...219 Turbine Revolution Sensor Replacement...219 ark/eutral osition () Switch djustment...219 Cooler...220 Cooler Valve...220 Control Cable djustment...221 Side cover...222 Control Valve ssembly... 222 Transmission wire... 222 RV ST...224 Removal... 224 nspection fter Removal... 224 nstallation... 224 VRU...225 Component... 225 ocation of eedle earings, earing Races and Thrust Washers... 231 SSSY...232 isassembly... 232 RR R CT RTS...251 il ump, 2nd Coast rake & 2nd rake... 251 ne-way Clutch uter Race Sub ssembly & 2nd Coast rake ub & ne-way Clutch o.1... 257 Transaxle Case Cover & 5 rake... 259 ifferential ear ssembly... 265 SSY...268 ssembly (1)... 268 djustment... 275 ssembly (2)... 276 SRVC SCCS (SS)...292 eneral Specification... 292 Shift Schedule... 292 Stall Speed... 293 ine ressure... 293 Time ag... 293 Shift Solenoid Valves... 293 Solenoid Valves... 294 Clutch, ear and rakes... 294 inal rive... 296 /T luid Temperature Sensor... 297 Turbine Revolution Sensor... 297 Revolution Sensor... 297-4
SRVC R X R TC lphabetical ndex X R TC :0000000004277999 T: f TC U1000 is displayed with other TCs, first perform the trouble diagnosis for TC U1000. Refer to -77. *1: These numbers are prescribed by S 2012. TC o. ndex tems (CSUT- screen terms) - CSUT- ST *1 TC xcept - CSUT- only TRSS- S Reference page /T 1ST R CT 0731 0731-108 /T 2 R CT 0732 0732-111 /T 3R R CT 0733 0733-116 /T 4T R CT 0734 0734-120 /T 5T R CT 0735 0735-123 /T TCC S/V CT 0744 0744-127 T S/CRC 0710 0710-88 C C CRCUT U1000 U1000-77 C T CTR 1726-192 S RR 0726-106 U T S 0711 0711-93 R VR SWTC 0825-184 C S (/RSS) 0745 0745-130 C S (ST/RS) 0775 0775-165 C S C(TCC&ST) 0795 0795-174 C S C STC 0797 0797-179 SW/CRC 0705 0705-83 ST 0780 0780-170 ST S 0750 0750-135 ST S 0755 0755-140 ST S C 0760 0760-145 ST S 0765 0765-155 ST S 0770 0770-160 ST S C STUC 0762 0762-150 TC WR T S 0882 0882-188 TC RCSSR 0613-82 TUR SSR 0717 0717-98 V S S/CR-TR 0500-80 VC S S-/T 0722 0722-102 :0000000004278000 T: -5
X R TC f TC U1000 is displayed with other TCs, first perform the trouble diagnosis for TC U1000. Refer to -77. TC - CSUT- ST *1 xcept - CSUT- only TRSS- S tems (CSUT- screen terms) Reference page 0500 V S S/CR-TR -80 0613 TC RCSSR -82 0705 0705 SW/CRC -83 0710 0710 T S/CRC -88 0711 0711 U T S -93 0717 0717 TUR SSR -98 0722 0722 VC S S-/T -102 0726 S RR -106 0731 0731 /T 1ST R CT -108 0732 0732 /T 2 R CT -111 0733 0733 /T 3R R CT -116 0734 0734 /T 4T R CT -120 0735 0735 /T 5T R CT -123 0744 0744 /T TCC S/V CT -127 0745 0745 C S (/RSS) -130 0750 0750 ST S -135 0755 0755 ST S -140 0760 0760 ST S C -145 0762 0762 ST S C STUC -150 0765 0765 ST S -155 0770 0770 ST S -160 0775 0775 C S (ST/RS) -165 0780 0780 ST -170 0795 0795 C S C(TCC&ST) -174 0797 0797 C S C STC -179 0825 R VR SWTC -184 0882 0882 TC WR T S -188 1726 C T CTR -192 U1000 U1000 C C CRCUT -77 *1: These numbers are prescribed by S 2012. -6
RCUTS RCUTS recaution for Supplemental Restraint System (SRS) "R " and "S T R-TSR" :0000000004278001 The Supplemental Restraint System such as R and S T R-TSR, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. nformation necessary to service the system safely is included in the SR and S section of this Service anual. WR: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized SS/T dealer. mproper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. or removal of Spiral Cable and ir ag odule, see the SR section. o not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service anual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. recaution for n oard iagnosis () System of /T and ngine -7 :0000000004278002 The C has an on board diagnostic system. t will light up the malfunction indicator lamp () to warn the driver of a malfunction causing emission deterioration. CUT: e sure to turn the ignition switch and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause the to light up. e sure to connect and lock the connectors securely after work. loose (unlocked) connector will cause the to light up due to an open circuit. (e sure the connector is free from water, grease, dirt, bent terminals, etc.) e sure to route and secure the harnesses properly after work. nterference of the harness with a bracket, etc. may cause the to light up due to a short circuit. e sure to connect rubber tubes properly after work. misconnected or disconnected rubber tube may cause the to light up due to a malfunction of the R system or fuel injection system, etc. e sure to erase the unnecessary malfunction information (repairs completed) from the TC and C before returning the vehicle to the customer. recaution for /T ssembly or TC Replacement :0000000004278003 When replacing /T assembly or TC, refer to the pattern table below and initialize TC if necessary. TC TZ TRS TC /T assembly rasing R in TC Remarks Replaced with new one ot replaced Replaced with old one ot replaced Replaced with new or old one Replaced with new or old one ot replaced Replaced with new or old one T: ld one is the TC or /T assembly that has been used on other vehicles. T R TC TZ ot required Required ot required because the R in TC is in the default state. Required because data cannot be conformed to previous data written in the R in TC.
1. Set the vehicle following the items listed below. gnition switch. Selector lever or position. ngine not running. Vehicle speed is 0km/h (0 ). gnition voltage is more than 10.5V. alfunction was not detected. 2. Touch WR SURT. 3. Touch TZ. 4. nitialize TC following the direction in display. recaution RCUTS :0000000004278004 T: o not remove or disassemble any R522 model transaxle parts unless specified to do so in section. efore connecting or disconnecting the TC harness connector, turn ignition switch and disconnect negative battery cable. ecause battery voltage is applied to TC even if ignition switch is turned. S289 When connecting or disconnecting pin connectors into or from TC, take care not to damage pin terminals (bend or break). ake sure that there are not any bends or breaks on TC pin terminal, when connecting pin connectors. S291 efore replacing TC, perform TC input/output signal inspection and make sure whether TC functions properly or not. -66, "TC nput/utput Signal Reference Value". 040-8
RCUTS fter performing each TRU SS, perform TC (iagnostic Trouble Code) CR RCUR. The TC should not be displayed in the TC CR RCUR if the repair is completed. lways use the specified brand of /T fluid. Refer to -12, "luids and ubricants". Use paper rags not cloth rags during work. fter replacing the /T fluid, dispose of the waste oil using the methods prescribed by law, ordinance, etc. efore proceeding with disassembly, thoroughly clean the outside of the transaxle. t is important to prevent the internal parts from becoming contaminated by dirt or other foreign matter. isassembly should be done in a clean work area. Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere with the operation of the transaxle. lace disassembled parts in order for easier and proper assembly. ll parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or reassembly. askets, seals and -rings should be replaced any time the transaxle is disassembled. t is very important to perform functional tests whenever they are indicated. The valve body contains precision parts and requires extreme care when parts are removed and serviced. lace disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs and small parts from becoming scattered or lost. roperly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight. efore assembly, apply a coat of recommended to all parts. pply petroleum jelly to protect -rings and seals, or hold bearings and washers in place during assembly. o not use grease. xtreme care should be taken to avoid damage to -rings, seals and gaskets when assembling. fter overhaul, refill the transaxle with new. When the /T drain plug is removed, only some of the fluid is drained. ld /T fluid will remain in torque converter and cooling system. lways follow the procedures under Changing /T luid in the section when changing /T fluid. Refer to -13, "Changing /T luid", -13, "Checking /T luid". Service otice or recaution S217U :0000000004278005 CR SRVC f /T fluid contains frictional material (clutches, bands, etc.), or if an /T is repaired, overhauled, or replaced, inspect and clean the /T fluid cooler mounted in the radiator or replace the radiator. lush cooler lines using cleaning solvent and compressed air after repair. or /T fluid cooler cleaning procedure, refer to -14, "/T luid Cooler Cleaning". or radiator replacement, refer to C-16. - S-SS /T self-diagnosis is performed by the TC in combination with the C. The results can be read through the blinking pattern of the / indicator or the malfunction indicator lamp (). Refer to the table on -69, "CSUT- unction (TRSSS)" for the indicator used to display each self-diagnostic result. The self-diagnostic results indicated by the are automatically stored in both the C and TC memories. lways perform the procedure on -36, "- iagnostic Trouble Code (TC)" to complete the repair and avoid unnecessary blinking of the. or details of -, refer to -36. Certain systems and components, especially those related to, may use the new style slide-locking type harness connector. or description and how to disconnect, refer to -70. -9
RR Special Service Tool RR :0000000004278006 The actual shapes of ent-oore tools may differ from those of special service tools illustrated here. Tool number (ent-oore o.) Tool name (-34301-C) il pressure gauge set 1 (-34301-1) il pressure gauge 2 (-34301-2) oses 3 (-34298) dapter 4 (-34282-2) dapter 5 (790-301-1230-) 60 dapter 6 (-34301-15) Square socket V3110010 (-45542) dapter 896 escription easuring line pressure easuring line pressure SC3019 V9110060 (-45404) lignment tool djusting park/neutral position () switch SC3018 ST33290001 (-34286) uller Removing oil pump assembly Removing thrust roller bearing a: 250 mm(9.84 in) b: 160 mm(6.30 in) T414 ST33400001 (-26082) rift nstalling differential side oil seals a: 60 mm(2.36 in) dia. b: 74 mm(1.85 in) dia. T086-10
RR Tool number (ent-oore o.) Tool name escription V31102400 (-34285 and -34285-87) Clutch spring compressor Removing and installing return springs a: 320 mm(12.60 in) b: 174 mm(6.85 in) ST30720000 (-25405) rift T423 nstalling oil seal nstalling thrust roller bearing a: 77 mm(3.03 in) dia. b: 55.5 mm(2.185 in) dia. T115 ST30612000 (-25742-2) rift Removing outer race and adjust shim a: 62 mm(2.44 in) dia. b: 40 mm(1.57 in) dia. T073 ST3127S000 (-25765-) reload gauge 1 91030000 (-25765-) Torque wrench 2 T62940000 ( ) Socket adapter 3 T62900000 ( ) Socket adapter V40102500 (-28815) rift T124 Checking differential side bearing preload a: 60 mm(2.362 in) dia. b: 45 mm(1.772 in) SC5517 ST33061000 (-8107-2) rift Removing tapered roller bearing nstalling manual valve oil seal a: 38 mm(1.496 in) dia. b: 28.5 mm(1.122 in) dia. T073-11
RR Tool number (ent-oore o.) Tool name V38100500 ( ) rift escription nstalling tapered roller bearing a: 80 mm (3.15 in) dia. b: 60 mm (2.362 in) dia. T115 V40100621 (-25273) rift nstalling outer race and adjust shim a: 76 mm(2.992 in) dia. SC5518 ST30022000 ( ) rift a: 56 mm(2.205 in) dia. b: 110 mm(4.331 in) dia. c: 15 mm(0.591 in) Commercial Service Tool SC5519 :0000000004278007 Tool name ower tool escription oosening bolts and nuts C0190 uller Removing tapered roller bearing T077 uller a: 60 mm(2.36 in) dia. b: 35 mm(1.38 in) dia. T411-12
/T U Changing /T luid /T U :0000000004278008 1. Run the engine to warm up the transaxle until the fluid is at full operating temperature T. Temperature range C : 30 40 C (86 104 ) T : 70 80 C (158 176 ) 2. Stop the engine. 3. Remove the engine undercover. 4. rain the /T fluid by removing the drain plug. Reinstall the drain plug to the specified tightness using a new drain washer. rain plug : 39 m (4.0 kg-m, 29 ft-lb) 5. Refill the transaxle with new specified /T fluid through the /T fluid charging pipe. lways refill the transaxle with the same volume amount that was drained out. luid grade and capacity CUT: o not overfill the transaxle. 6. Run the engine at idle speed for five minutes. 7. Check fluid level and condition. Refer to -13, "Checking /T luid". f the fluid is still contaminated, repeat step 2 through 5. Checking /T luid : Refer to -12. 1. Warm up the engine. 2. Check for any transaxle fluid leaks. 3. efore driving, the fluid level can be checked at fluid temperature using the C range on the /T fluid level gauge. 0066 :0000000004278009 Temperature range C : 30 40 C (86 104 ) T : 70 80 C (158 176 ) a. ark the vehicle on a level surface and set parking brake. b. Start the engine and move the transaxle selector lever through each gear position. eave the selector lever in the park position. W0014-13
/T U c. Check the fluid level with the engine idling. CUT: irmly secure the /T fluid level gauge into the /T fluid charging pipe using the attached stopper, this will provide an accurate reading on the gauge. d. Remove the /T fluid level gauge and wipe it clean with a lintfree paper. e. Re-insert the /T fluid level gauge into the charging pipe as far as it will go. f. Remove the /T fluid level gauge and note the reading. f the 0065 reading is at or below the low side of the range, add the necessary specified /T fluid through the /T fluid charging pipe and then re-insert the /T fluid level gauge. CUT: o not overfill the transaxle. irmly secure the /T fluid level gauge into the /T fluid charging pipe using the attached stopper, this will provide an accurate reading on the gauge, and will keep the gauge in position while driving. 4. rive the vehicle for approximately 5 minutes at moderate speeds. 5. Re-check the fluid level at fluid temperatures using the T range on the /T fluid level gauge. CUT: irmly secure the /T fluid level gauge into the /T fluid charging pipe using the attached stopper, this will provide an accurate reading on the gauge, and will keep the gauge in position while driving. Temperature range C : 30 40 C (86 104 ) T : 70 80 C (158 176 ) W0014 6. Check the fluid for the following conditions: f the fluid is very dark or smells burned, refer to the -13, "Changing /T luid". lush the fluid cooling system after repairing the transaxle. f the fluid contains frictional material (from the clutches or bands), remove the radiator and flush the cooler lines using a cleaning solvent and compressed air after completing repairs to the transaxle. Refer to -14, "/T luid Cooler Cleaning". /T luid Cooler Cleaning S853 :0000000004278010 Whenever an automatic transaxle is repaired, overhauled, or replaced, the /T fluid cooler mounted in the radiator must be inspected and cleaned. etal debris and friction material, if present, can become trapped in the /T fluid cooler. This debris can contaminate the newly serviced /T or, in severe cases, can block or restrict the flow of /T fluid. n either case, malfunction of the newly serviced /T may result. ebris, if present, may build up as /T fluid enters the cooler inlet. t will be necessary to back flush the cooler through the cooler outlet in order to flush out any built up debris. /T U CR C RCUR 1. osition an oil pan under the automatic transaxle's inlet and outlet cooler hoses. 2. dentify the inlet and outlet fluid cooler hoses. -14
/T U 3. isconnect the fluid cooler inlet and outlet rubber hoses from the steel cooler tubes or bypass valve. T: Replace the cooler hoses if rubber material from the hose remains on the tube fitting. 4. llow any /T fluid that remains in the cooler hoses to drain into the oil pan. 5. nsert the extension adapter hose of a can of Transmission Cooler Cleaner (issan / 999-006) into the cooler outlet hose. CUT: Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner. Spray cooler cleaner only with adequate ventilation. void contact with eyes and skin. o not breath vapors or spray mist. 6. old the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet hose until fluid flows out of the cooler inlet hose for 5 seconds. 7. nsert the tip of an air gun into the end of the cooler outlet hose. 8. Wrap a shop rag around the air gun tip and of the cooler outlet hose. SC2945 SC2955 SC2962 9. low compressed air regulated to 5-9 kg/cm 2 (71-128 psi) through the cooler outlet hose for 10 seconds to force out any remaining fluid. 10. Repeat steps 5 through 9 three additional times. 11. osition an oil pan under the banjo bolts that connect the fluid cooler steel lines to the transaxle. 12. Remove the banjo bolts. 13. lush each steel line from the cooler side back toward the transaxle by spraying Transmission Cooler Cleaner in a continuous stream for 5 seconds. 14. low compressed air regulated to 5-9 kg/cm 2 (71-128 psi) through each steel line from the cooler side back toward the transaxle for 10 seconds to force out any remaining fluid. 15. nsure all debris is removed from the steel cooler lines. 16. nsure all debris is removed from the banjo bolts and fittings. 17. erform "/T U CR SS RCUR". /T U CR SS RCUR T: nsufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification. 1. osition an oil pan under the automatic transaxle's inlet and outlet cooler hoses. 2. Clean the exterior and tip of the cooler inlet hose. -15
/T U 3. nsert the extension adapter hose of a can of Transmission Cooler Cleaner (issan / 999-006) into the cooler outlet hose. CUT: Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner. Spray cooler cleaner only with adequate ventilation. void contact with eyes and skin. o not breath vapors or spray mist. 4. old the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet hose until fluid flows out of the cooler inlet hose for 5 seconds. 5. Tie a common white, basket-type coffee filter to the end of the cooler inlet hose. SC2955 SC2965 6. nsert the tip of an air gun into the end of the cooler outlet hose. 7. Wrap a shop rag around the air gun tip and end of cooler outlet hose. 8. low compressed air regulated to 5-9 kg/cm 2 (71-128 psi) through the cooler outlet hose to force any remaining /T fluid into the coffee filter. 9. Remove the coffee filter from the end of the cooler inlet hose. 10. erform "/T U CR SCT RCUR". SC2966 /T U CR SCT RCUR 1. nspect the coffee filter for debris. a. f small metal debris less than 1mm (0.040 in) in size or metal powder is found in the coffee filter, this is normal. f normal debris is found, the /T fluid cooler/radiator can be re-used and the procedure is ended. SC2967-16
/T U b. f one or more pieces of debris are found that are over 1mm (0.040 in) in size and/or peeled clutch facing material is found in the coffee filter, the fluid cooler is not serviceable. The radiator/ fluid cooler must be replaced and the inspection procedure is ended. /T U CR SCT fter performing all procedures, ensure that all remaining oil is cleaned from all components. SC5257-17
/T CTR SYST Cross-Sectional View /T CTR SYST :0000000004278011 SC2575 1. Converter housing 2. 2nd brake 3. ne-way clutch o. 2 4. Control valve assembly 5. Side cover 6. 1st and reverse brake 7. orward clutch 8. irect clutch 9. Transaxle case cover 10. 5 brake 11. Transaxle case 12. U/ clutch 13. U/ brake 14. inal gear 15. ifferential case 16. utput shaft 17. Counter driven gear 18. Counter drive gear 19. nput shaft 20. il pump 21. ne-way clutch o. 1 22. 2nd coast brake 23. Torque converter 24. ain rear planetary gear 25. ain front planetary gear 26. U/ rear planetary gear 27. U/ front planetary gear Shift echanism :0000000004278012 CSTRUCT -18
/T CTR SYST 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl UCT CUTC R SC2576 Clutch and brake components bbr. unction orward clutch 1 /C Connect input shaft 20 to main rear internal gear 10. irect clutch 2 /C Connect input shaft 20 to main sun gear 11. U/ clutch 3 U/.C Connect U/ sun gear 15 to U/ front planetary carrier 16. 2nd coast brake 4 2nd C/ ock main sun gear 11. 2nd brake 5 2nd/ ock counterclockwise rotation of main sun gear 11. 1st and reverse brake 6 1st & R/ ock main front internal gear 13. U/ brake 7 U/. ock U/ sun gear 15. 5 brake 8 5/ ock U/ rear planetary carrier 18. ne-way clutch o. 1 9.C1 ock counterclockwise rotation of main sun gear 11, when 2nd brake 5 operations. ne-way clutch o. 2 10.C2 ock counterclockwise rotation of main front internal gear 13. -19
CUTC CRT /T CTR SYST Clutch rake ne-way clutch Shift position /C 1 /C 2 U/.C 3 2nd C/ 4 2nd/ 5 1st & R/ 6 U/. 7 5/ 8.C1 9.C2 10 Remarks R ST R RVRS ST UTR ST 1st 1 2 2nd *1 *2 2 3 3rd 3 4 4th 4 5 5th 1st 1 2 2nd 2 3 3rd utomatic shift 1 2 3 4 5 utomatic shift 1 2 3 : perates : n transition between applied and released. *1: /T will not shift to 5th when lever switch is pushed (indicated /T indicator 4 ). *2: /T will not shift to 3th when lever switch is pushed (indicated /T indicator 2 ). T: When shifting to position or lever switch pushes (indicated /T indicator 4 at position or 2 at position), down shift permission control is activated. Refer to -33, "Shift Control". WR TRSSS position Since both the forward clutch and the direct clutch are released, torque from the input shaft drive is not transmitted to the output shaft. position The same as for the position, both the forward clutch and the direct clutch are released, so torque from the input shaft drive is not transmitted to the output shaft. The parking pole linked with the selector lever meshes with the parking gear and fastens the output shaft mechanically. -20
/T CTR SYST 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl, positions 1st gear SC2577 1. nput shaft rotates clockwise. 2. orward clutch operates. (Connect input shaft to main rear internal gear.) 3. ain rear internal gear rotates clockwise. 4. ain rear planetary pinion gear rotates itself clockwise. 5. ain front large planetary pinion gear rotates itself clockwise for rear planetary pinion and one. 6. ain front small planetary pinion gear rotates itself counterclockwise. 7. ain front internal gear is going to rotates counterclockwise. 8. ne-way clutch o. 2 operates. (ock counterclockwise rotation of main front internal gear.) 9. ain planetary carrier revolves clockwise due to reaction force of front small planetary pinion gear. 10. Counter drive gear rotates clockwise for main planetary carrier and one. 11. Counter driven gear rotates counterclockwise. 12. U/ front internal gear rotates counterclockwise for counter driven gear and one. 13. U/ front planetary pinion gear rotates itself counterclockwise. 14. U/ sun gear rotates clockwise. -21
/T CTR SYST 15. U/ rear planetary pinion gear rotates itself counterclockwise. 16. 5 brake operate. (ock rotation of U/ rear planetary carrier.) 17. U/ rear internal gear rotates counterclockwise. 18. U/ front planetary carrier and output shaft rotates counterclockwise for U/ rear internal gear and one. 19. inal gear clockwise. uring deceleration, main front internal gear clockwise due to rotation itself clockwise of main front small planetary pinion gear, but driving force loses due to free of one-way clutch o. 2. Therefore, engine brake does not operate. SC2585 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear -22
/T CTR SYST 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl, positions 2nd gear 1. nput shaft rotates clockwise. 2. orward clutch operates. (Connect input shaft to main rear internal gear.) 3. ain rear internal gear rotates clockwise. 4. ain rear planetary pinion gear rotates itself clockwise. 5. ain front large planetary pinion gear rotates itself clockwise for rear planetary pinion and one. 6. 2nd brake and 2nd coast brake operates. 7. ne-way clutch o. 1 operates. (ock rotation of main sun gear.) 8. ain planetary carrier revolves clockwise due to reaction force of front large planetary pinion gear. 9. Counter drive gear rotates clockwise for main planetary carrier and one. 10. Counter driven gear rotates counterclockwise. 11. U/ front internal gear rotates counterclockwise for counter driven gear and one. 12. U/ front planetary pinion gear rotates itself counterclockwise. 13. U/ sun gear rotates clockwise. 14. U/ rear planetary pinion gear rotates itself counterclockwise. 15. 5 brake operate. (ock rotation of U/ rear planetary carrier.) 16. U/ rear internal gear rotates counterclockwise. 17. U/ front planetary carrier and output shaft rotates counterclockwise for U/ rear internal gear and one. 18. inal gear clockwise. uring deceleration, driving force is connected to input shaft directly without one-way clutch. Therefore, engine brake operates. -23
/T CTR SYST SC2587 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl, positions 3rd gear 1. nput shaft rotates clockwise. 2. orward clutch operates. (Connect input shaft to main rear internal gear.) 3. ain rear internal gear rotates clockwise. 4. ain rear planetary pinion gear rotates itself clockwise. 5. ain front large planetary pinion gear rotates itself clockwise for rear planetary pinion and one. -24
/T CTR SYST 6. 2nd brake and 2nd coast brake operates. 7. ne-way clutch o. 1 operates. (ock rotation of main sun gear.) 8. ain planetary carrier revolves clockwise due to reaction force of front large planetary pinion gear. 9. Counter drive gear rotates clockwise for main planetary carrier and one. 10. Counter driven gear rotates counterclockwise. 11. U/ front internal gear rotates counterclockwise for counter driven gear and one. 12. U/ front planetary pinion gear rotates itself counterclockwise. 13. U/ brake operate. (ock rotation of U/ sun gear.) 14. U/ front planetary carrier revolves counterclockwise due to reaction force of U/ front planetary pinion gear. 15. U/ rear internal gear and output shaft rotates counterclockwise for U/ front planetary carrier and one. 16. inal gear clockwise. uring deceleration, driving force is connected to input shaft directly without one-way clutch. Therefore, engine brake operates. SC2588 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake -25
/T CTR SYST 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl positions 4th gear 1. nput shaft rotates clockwise. 2. orward clutch operates. (Connect input shaft to main rear internal gear.) 3. ain rear internal gear rotates clockwise. 4. ain rear planetary pinion gear rotates itself clockwise. 5. ain front large planetary pinion gear rotates itself clockwise for rear planetary pinion and one. 6. 2nd brake and 2nd coast brake operates. 7. ne-way clutch o. 1 operates. (ock rotation of main sun gear.) 8. ain planetary carrier revolves clockwise due to reaction force of front large planetary pinion gear. 9. Counter drive gear rotates clockwise for main planetary carrier and one. 10. Counter driven gear rotates counterclockwise. 11. U/ front internal gear rotates counterclockwise for counter driven gear and one. 12. U/ clutch operate. (Connect U/ sun gear to U/ front planetary carrier.) 13. U/ front planetary pinion gear cannot rotate itself, and U/ unit rotates counterclockwise as one. 14. utput shaft rotates counterclockwise for U/ unit and one. 15. inal gear clockwise. uring deceleration, driving force is connected to input shaft directly without one-way clutch. Therefore, engine brake operates. -26
/T CTR SYST SC2592 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl positions 5th gear 1. nput shaft rotates clockwise. 2. orward clutch operates. (Connect input shaft to main rear internal gear.) 3. irect clutch operates. (Connect input shaft to main sun gear.) 4. ain rear planetary pinion gear cannot rotate itself, and main rear planetary unit rotates clockwise as one. -27
/T CTR SYST 5. ain front large planetary pinion gear cannot rotate itself for main rear planetary pinion gear and one, and main front planetary unit rotates clockwise as one. 6. Counter drive gear rotates clockwise for main front planetary unit and one. 7. Counter driven gear rotates counterclockwise. 8. U/ front internal gear rotates counterclockwise for counter driven gear and one. 9. U/ clutch operate. (Connect U/ sun gear to U/ front planetary carrier.) 10. U/ front planetary pinion gear cannot rotate itself, and U/ unit rotates counterclockwise as one. 11. utput shaft rotates counterclockwise for U/ unit and one. 12. inal gear clockwise. uring deceleration, driving force is connected to input shaft directly without one-way clutch. Therefore, engine brake operates. SC2593 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear -28
/T CTR SYST 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl R position 1. nput shaft rotates clockwise. 2. irect clutch operates. (Connect input shaft to main sun gear.) 3. ain sun gear rotates clockwise. 4. ain rear planetary pinion gear rotates itself clockwise. 5. ain front large planetary pinion gear rotates itself counterclockwise for rear planetary pinion gear and one. 6. ain front small planetary pinion gear rotates itself clockwise. 7. 1st and reverse brake operates. (ock rotation of main front internal gear.) 8. ain planetary carrier revolves counterclockwise due to reaction force of front small planetary pinion gear. 9. Counter drive gear rotates counterclockwise for main planetary carrier and one. 10. Counter driven gear rotates clockwise. 11. U/ front internal gear rotates clockwise for counter driven gear and one. 12. U/ front planetary pinion gear rotates itself clockwise. 13. U/ sun gear rotates counterclockwise. 14. U/ rear planetary pinion gear rotates itself clockwise. 15. 5 brake operate. (ock rotation of U/ rear planetary carrier.) 16. U/ rear internal gear rotates clockwise. 17. U/ front planetary carrier and output shaft rotates clockwise for U/ rear internal gear and one. 18. inal gear counterclockwise. uring deceleration, driving force is connected to input shaft directly without one-way clutch. Therefore, engine brake operates. -29
/T CTR SYST SC2594 1. orward clutch 2. irect clutch 3. U/ clutch 4. 2nd coast brake 5. 2nd brake 6. 1st and reverse brake 7. U/ brake 8. 5 brake 9. ne-way clutch o. 1 10. ne-way clutch o. 2 11. ain sun gear 12. ain planetary carrier 13. ain front internal gear 14. ain rear internal gear 15. U/ sun gear 16. U/ front planetary carrier 17. U/ front internal gear 18. U/ rear planetary carrier 19. U/ rear internal gear 20. nput shaft 21. Counter drive gear 22. Counter driven gear 23. utput shaft 24. arking gear 25. arking pawl TC unction The function of the TC is to: Receive input signals sent from various switches and sensors. etermine required line pressure, shifting point, lock-up operation, and engine brake operation. Send required output signals to the respective solenoids. CTR SYST UT -30 :0000000004278013
/T CTR SYST The automatic transaxle senses vehicle operating conditions through various sensors or signals. t always controls the optimum shift position and reduces shifting and lock-up shocks. SSRS (or S) TC CTURS switch Throttle angle signal Throttle position signal ngine speed signal ngine torque signal /T fluid temperature sensor Revolution sensor Turbine revolution sensor Vehicle speed signal ever switch signal Stop lamp switch signal Shift control ine pressure control ock-up control ngine brake control Timing control ail-safe control Self-diagnosis CSUT- communication line C communication line n board diagnosis Shift solenoid valve Shift solenoid valve Shift solenoid valve C Shift solenoid valve Shift solenoid valve ressure control solenoid valve ressure control solenoid valve ressure control solenoid valve C / indicator lamp CTR SYST R WC0645-31
nput/utput Signal of TC /T CTR SYST :0000000004278014 Control item nput ngine torque signals (*5) X X X X X X switch X X X X X X X (*4) ever switch X X X X X Stop lamp switch signal (*5) X X X X (*4) /T fluid temperature sensor X X X X X X SC peration signal(*5) X X X verdrive cancel signal (*5) X X X TC power supply voltage signal X X X X X X X Shift solenoid valve //C// X X X X ressure control solenoid valve X X X X X X X utput ressure control solenoid valve X X X X X ressure control solenoid valve C X X X X Self-diagnostics table (*5) X *1: Spare for revolution sensor *2: Spare for throttle angle signal *3: f these input and output signals are different, the TC triggers the fail-safe function. *4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kind of error. *5: C communications. C Communication :0000000004278015 SYST SCRT C (Controller rea etwork) is a serial communication line for real time application. t is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. any electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). n C communication, control units are connected with 2 communication lines (C line, C line) allowing a high rate of information transmission with less wiring. ach control unit transmits/receives data but selectively reads required data only. or details, refer to -3, "C Communication System". ine ressure Control ine pressure control Vehicle speed control Shift control ock-up control ngine brake control ail-safe function (*3) Throttle angle signal (*5) X X X X X X X Self-diagnostics function Throttle position signal (*5) X (*2) X (*2) X X (*2) X (*4) Revolution sensor X X X X X X X Turbine revolution sensor X X X X X X Vehicle speed signal TR (*1) (*5) X X X X X X ngine speed signals (*5) X X X X X :0000000004278016 The pressure control solenoid controls linear line pressure by control signal from TC and line pressure for clutches and brakes to reduce shift shock. This pressure control solenoid controls the pressure regulator valve as the signal pressure and adjusts the pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving state. -32
/T CTR SYST SC2605 RSSUR CTR S S T TC RSSUR CRCTRSTC - TR n order to obtain the most appropriate line pressure characteristic to meet the current driving state, the TC controls the pressure control solenoid current valve and thus controls the line pressure. Shift Control :0000000004278017 The clutch pressure control solenoid is controlled by the signals from the switches and sensors. Thus, the clutch pressure is adjusted to be appropriate to the engine load state and vehicle driving state. t becomes possible to finely control the clutch hydraulic pressure with high precision and a smoother shift change characteristic is attained. SC3569 asically TC programmed for economy mode, but TC changes to several shift schedule automatically according to specified condition. SC ST Upslope ode When TC detects upslope from load of engine torque and decrease of acceleration, this mode changes shift points in high-speed side according to the upslope degree and avoids busy shift of /T. ownslope ode When TC detects downslope from increase of acceleration with accelerator full close, this mode operates moderate engine brake by changing shift points in high-speed side. ot ode Control This control lowers temperature by changing shift points when the temperature is extremely high. own Shift ermission Control n order to avoid the over speed of the engine, down shift is done only at under a constant vehicle speed. -33
/T CTR SYST < SRVC R > U/W ST R CTR This control learns the pressure to each clutch or brake in order to reduce shifting shock at each shifting (Up, own, Coast down). - ST CTR This control improves the - shift quality due to controlling line pressure solenoid valve according to forward clutch piston stroke learned in - shift learning control and applying best hydraulic pressure to forward clutch at - shift (include ). - ST R CTR This control learns the forward clutch hydraulic pressure due to monitoring a forward clutch engaging time and a rotation change rate. -R ST CTR This control improves the -R shift quality due to controlling shift pressure solenoid valve according to direct clutch piston stroke learned in -R shift learning control and applying best hydraulic pressure to direct clutch at -R shift. -R ST R CTR This control learns the direct clutch hydraulic pressure due to monitoring a direct clutch engaging time and a rotation change rate. TRQU RUCT CTR This control improves the shift quality due to sending torque reduction request signal from TC to C and cutting engine torque increase of shift at - shift, -R shift and 1 2 3 4 5. f accelerator pedal is depressed rapidly, this control establishes the upper limit value of engine torque and avoids engine flare at 2 3, 3 4 and 4 2 of clutch to clutch shift. ock-up Control :0000000004278018 The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to increase power transmission efficiency. The torque converter clutch control valve operation is controlled by the pressure control solenoid valve C, which is controlled by a signal from TC, and the torque converter clutch control valve engages or releases the torque converter clutch piston. ock-up peration Condition Table Selector lever position position ever switch (/T indicator) TRQU CVRTR CUTC CTR VV CTR ock-up Control System iagram () ear position 5 4 4 3 2 ock-up Slip lock-up (4) (3) (2) -34 SC2612
/T CTR SYST ock-up Released n the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the pressure control solenoid valve C and the lock-up apply pressure is drained. n this way, the torque converter clutch piston is not coupled. ock-up pplied n the lock-up applied state, the torque converter clutch control valve is set into the locked state by the pressure control solenoid valve C and lock-up apply pressure is generated. n this way, the torque converter clutch piston is pressed and coupled. ST C-U CTR When shifting from the lock-up released state to the lock-up applied state, the current output to the pressure control solenoid valve C is controlled with the TC. n this way, when shifting to the lock-up applied state, the torque converter clutch is temporarily set to the half-clutched state to reduce the shock. alf-clutched State The current output from the TC to the pressure control solenoid valve C is varied to steadily increase the pressure control solenoid valve C pressure. n this way, the lock-up apply pressure gradually rises and while the torque converter clutch piston is put into half-clutched status, the torque converter clutch piston operating pressure is increased and the coupling is completed smoothly. Slip ock-up Control n the slip region, the pressure control solenoid valve C current is controlled with the TC to put it into the half-clutched state. This absorbs the engine torque fluctuation and lock-up operates from low speed. This raises the fuel efficiency for 4th and 5th gears at both low speed and when the accelerator has a low degree of opening. -35