STEERING SYSTEM SECTION ST CONTENTS STEERING ST-1 PRECAUTION... 3 DTC/CIRCUIT DIAGNOSIS...17 PREPARATION... 5 SYSTEM DESCRIPTION...

Transcription

1 RG RG SY TTS RUT... 3 RUTS... 3 recaution for Supplemental Restraint System (SRS) "R G" and " T R-T- SR"...3 recaution ecessary for Steering Wheel Rotation after attery isconnect...3 Service otice or recautions for Steering System...4 RRT... 5 RRT... 5 Special Service Tools...5 ommercial Service Tools...6 SY SRT... 8 T RTS... 8 omponent arts ocation (eated Steering Wheel)...8 omponent escription (eated Steering Wheel)...8 eated Steering Wheel...9 eated Steering Wheel Switch...9 eated Steering Wheel Relay...9 / uto mp....9 SY...10 System iagram (eated Steering Wheel)...10 System escription (eated Steering Wheel)...10 WRG GR...11 T RG W...11 Wiring iagram...11 S...14 GSS RR WR W...14 Worklow (eated Steering Wheel)...14 RG W...15 nspection...15 T/RUT GSS...17 T RG W SY...17 omponent unction heck...17 iagnosis rocedure...17 omponent nspection (eated Steering Wheel Switch)...19 omponent nspection (eated Steering Wheel)...20 omponent nspection (eated Steering Wheel Relay)...20 T RG W SWT - TR...21 omponent unction heck...21 iagnosis rocedure...21 omponent nspection (eated Steering Wheel Switch)...23 omponent nspection (eated Steering Wheel Relay)...23 SYT GSS...24 T RG W SY S T TVT...24 escription...24 iagnosis rocedure...24 T RG W SWT - TR S T TUR...27 escription...27 iagnosis rocedure...27 S, VRT RSSS (V) TRUG...29 V Troubleshooting hart...29 R T...31 WR RG U...31 nspection

2 RG W nspection RV T RG W xploded View Removal and nstallation isassembly and ssembly RG U xploded View Removal and nstallation nspection and djustment WR WTUT 4WS WTUT 4WS : xploded View WTUT 4WS : Removal and nstallation WTUT 4WS : nspection WT 4WS WT 4WS : xploded View WT 4WS : Removal and nstallation WT 4WS : isassembly and ssembly WT 4WS : nspection and djustment RG GR G W W : xploded View W : Removal and nstallation W : isassembly and ssembly W : nspection and djustment W W : xploded View W : Removal and nstallation W : isassembly and ssembly W : nspection WR RG U VQ37VR VQ37VR : xploded View VQ37VR : Removal and nstallation VQ37VR : isassembly and ssembly VQ37VR : nspection V56V V56V : xploded View V56V : Removal and nstallation V56V : isassembly and ssembly V56V : nspection YRU W W : xploded View W W : xploded View T RG W SWT Removal and nstallation SRV T STS (SS) SRV T STS (SS) General Specifications Steering Wheel xial nd lay and lay Steering Wheel Turning Torque Steering ngle Steering olumn ength Steering olumn ounting imensions Steering olumn perating Range ower Shaft Sliding Range Rack Sliding orce Rack Stroke Socket Swing orce and Rotating Torque Socket xial nd lay nner Socket ength Relief il ressure

3 < RUT > RUT RUTS RUTS recaution for Supplemental Restraint System (SRS) "R G" and " T R-TSR" : The Supplemental Restraint System such as R G and 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 SRS R G and T of this Service anual. WRG: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision that 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 able and ir ag odule, see the SRS R G. 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. RUTS W USG WR TS (R R TR) RS WRG: When working near the ir ag iagnosis Sensor Unit or other ir ag System sensors with the ignition or engine running, T use air or electric power tools or strike near the sensor(s) with a hammer. eavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the ignition, disconnect the battery, and wait at least 3 minutes before performing any service. recaution ecessary for Steering Wheel Rotation after attery isconnect : T: efore removing and installing any control units, first turn the push-button ignition switch to the position, then disconnect both battery cables. fter finishing work, confirm that all control unit connectors are connected properly, then re-connect both battery cables. lways use SUT- to perform self-diagnosis as a part of each function inspection after finishing work. f a T is detected, perform trouble diagnosis according to self-diagnosis results. or vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and cannot be turned. f turning the steering wheel is required with the battery disconnected or discharged, follow the operation procedure below before starting the repair operation. RT RUR 1. onnect both battery cables. T: Supply power using jumper cables if battery is discharged. 2. Turn the push-button ignition switch to position. (t this time, the steering lock will be released.) 3. isconnect both battery cables. The steering lock will remain released with both battery cables disconnected and the steering wheel can be turned. 4. erform the necessary repair operation. -3

4 < RUT > RUTS 5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn the push-button ignition switch from position to position, then to position. (The steering wheel will lock when the push-button ignition switch is turned to position.) 6. erform self-diagnosis check of all control units using SUT-. Service otice or recautions for Steering System : n case of removing steering gear assembly, make the final tightening with grounded and unloaded vehicle condition, and then check wheel alignment. bserve the following precautions when disassembling. - efore disassembly, thoroughly clean the outside of the unit. - isassembly should be done in a clean work area. t is important to prevent the internal parts from becoming contaminated by dirt or other foreign matter. - or easier and proper assembly, place disassembled parts in order on a parts rack. - Use nylon cloth or paper towels to clean the parts; common shop rags can leave lint that might interfere with their operation. - ever reuse non-reusable parts. - efore assembling, apply the specified grease to the directed parts. -4

5 < RRT > RRT RRT RRT Special Service Tools : The actual shapes of ent-oore tools may differ from those of special service tools illustrated here. Tool number (ent-oore o.) Tool name ( ) Steering wheel puller escription Removing steering wheel 3127S000 ( ) reload gauge ZZ0819 nspecting sliding torque, steering torque, and rotating torque for ball joint ZZ0806 V ( ) Teflon ring correcting tool a: 50 mm (1.97 in) dia. b: 36 mm (1.42 in) dia. c: 100 mm (3.94 in) nstalling rack Teflon ring S-T550 V ( ) reload adapter nspecting rotating torque ( ) rift a: 45.1 mm (1.776 in) dia. b: 59.0 mm (2.323 in) dia. ZZ0824 nstalling oil pump oil seal (without 4WS) ZZ0881-5

6 < RRT > RRT Tool number (ent-oore o.) Tool name V (-26357) il pressure gauge escription easuring oil pump relief pressure S-T547 V (-33914) il pressure gauge adapter easuring oil pump relief pressure S-T542 ommercial Service Tools : Tool name ower tool escription oosening bolts and nuts 0190 all joint remover Remove steering outer socket S-T146 pen head Tighten end cover assembly ZZ0822-6

7 < RRT > RRT Tool name rift a: 15 mm (0.59 in) dia. b: 10 mm (0.39 in) dia. escription nstalling rotor snap ring (without 4WS) S-T474 rift a: 36 mm (1.42 in) dia. b: 20 mm (0.79 in) dia. nstalling oil pump oil seal (with 4WS) S-T474-7

8 < SY SRT > SY SRT T RTS T RTS omponent arts ocation (eated Steering Wheel) : SG0827ZZ 1. eated steering wheel 2. eated steering wheel relay 3. / auto amp. Refer to -7, "UTT R TG SY (WT R R) : omponent arts ocation". 4. eated steering wheel switch. Right side of V control unit. eft bottom side of instrument lower panel omponent escription (eated Steering Wheel) : eated steering wheel eated steering wheel relay art name eating element Thermostat Reference/unction Refer to -9, "eated Steering Wheel". Refer to -9, "eated Steering Wheel Relay". -8

9 < SY SRT > T RTS art name Reference/unction eated steering wheel switch Refer to -9, "eated Steering Wheel Switch". / auto amp. Timer Refer to -9, "/ uto mp.". eated Steering Wheel : The heated steering wheel is activated by the power supply from the heated steering wheel relay. urthermore, the heated steering wheel incorporates a heating element and a thermostat to control heated steering wheel temperatures. eating element: eat is generated by the passage of an electric current. Thermostat: / operation of power supply at a certain temperature. eated Steering Wheel Switch : T: This is an integrated switch with switches for other functions. ontrols the heated steering wheel relay and operates the heated steering wheel system. Turns the indicator lamp when the system is activated. eated Steering Wheel Relay : perates the heated steering system with the control signal from the heated steering wheel switch. / uto mp. : The / auto amp. incorporates a timer and turns the heated steering wheel relay when operating time reaches a certain time. - Timer: / operation of the heated steering wheel relay at a certain time. -9

10 < SY SRT > SY SY System iagram (eated Steering Wheel) System escription (eated Steering Wheel) : : The heated steering wheel switch controls the heated steering wheel relay. When the heated steering wheel switch is turned on, the heated steering wheel relay is energized and the heated steering wheel system will operate. The heated steering wheel system will turn off when the heated steering wheel temperature reaches approximately 30 (86 ). eated steering wheel system operation can also be canceled by pressing the heated steering wheel switch again. The / auto amp. ncorporates a timer and turns the heated steering wheel relay when operating time reaches a certain time. T: f the surface temperature of the steering wheel is below 20 (68 ), the system will heat the steering wheel and cycle off and on to maintain a temperature above 20 (68 ). The indicator light will remain on as long as the system is on. ush the switch again to turn the heated steering wheel system off manually. The indicator light will go off. SY GR SG0828G -10

11 < WRG GR > WRG GR T RG W Wiring iagram T RG W : GW0256G -11

12 < WRG GR > T RG W GW0257G -12

13 < WRG GR > T RG W GW0258G -13

14 < S > GSS RR WR W S GSS RR WR W Worklow (eated Steering Wheel) : T W 1.T RT UT SYT nterview the customer to obtain the malfunction information (conditions and environment when the malfunction occurred) as much as possible when the customer brings the vehicle in. >> G T 2. 2.RRU T UT RT heck the malfunction on the vehicle that the customer describes. nspect the relation of the symptoms and the condition when the symptoms occur. >> G T 3. 3.TY T UTG SY WT SYT GSS Use Symptom diagnosis from the symptom inspection result in step 2 and then identify where to start performing the diagnosis based on possible causes and symptoms. >> G T 4. 4.TY T UTG RTS WT T GSS erform the diagnosis with omponent diagnosis of the applicable system. >> G T 5. 5.RR R R T UTG RTS Repair or replace the specified malfunctioning parts. >> G T heck that malfunctions are not reproduced when obtaining the malfunction information from the customer, referring to the symptom inspection result in step 2. re the malfunctions corrected? YS >> >> G T

15 < S > RG W nspection RG W : UTR ST RG W 1. heck that steering gear assembly, steering column assembly and steering wheel are installed in the correct position. 2. erform neutral position inspection after wheel alignment. Refer to SU-8, "nspection" (2W), SU-28, "nspection" (W). 3. Set the vehicle to the straight-ahead position and confirm steering wheel is in the neutral position. 4. oosen outer socket lock nut and turn inner socket to left and right equally to make fine adjustments if steering wheel is not in the neutral position. RG W TURG TRQU 1. ark the vehicle on a level and dry surface, set parking brake. 2. Tires need to be inflated to the spcified pressure. Refer to WT-74, "Tire ir ressure". 3. Remove driver air bag module. Refer to SR-11, "Removal and nstallation". 4. Start the engine. 5. heck that the power steering fluid is at the operating temperature. luid temperature 6. ake sure that the reading is within the following specified range using the preload gauge () (S: 3127S000). Steering wheel turning torque 7. f steering wheel turning torque is out of the specification, check rack sliding force and relief hydraulic pressure of oil pump. Regarding relief hydraulic pressure of oil pump, refer to -77, "V56V : nspection" (V56V), -71, "VQ37VR : nspection" (VQ37VR). R SG R 1. isconnect lower joint and steering knuckle from steering gear assembly. Refer to -45, "2W : Removal and nstallation" (2W), -55, "W : Removal and nstallation" (W). 2. Start and run the engine at idle to make sure steering fluid has reached normal operating temperature. luid temperature 3. While pulling outer socket slowly in ±11.5 mm (±0.453 in) range from neutral position, make sure rack sliding force is within specification. Rack sliding force : ( ) : Refer to -85, "Steering Wheel Turning Torque". : ( ) : Refer to -86, "Rack Sliding orce". 4. f rack sliding force is not within specification, overhaul steering gear assembly. SG0431ZZ RT W TURG G 1. heck front wheel turning angle after toe-in inspection. Refer to SU-8, "nspection" (2W), SU-28, "nspection" (W). S090-15

16 < S > RG W 2. lace front wheels on turning radius gauges and rear wheels on stands, so that vehicle can be level. 3. heck the maximum inner and outer wheel turning angles for and R road wheels With the engine at idle, turn steering wheel from full left stop to full right stop and measure the turning angles. nner wheel (ngle: ) uter wheel (ngle: ) : Refer to -85, "Steering ngle". : Refer to -85, "Steering ngle". SG heck the following items when turning angle is out of the standard. a. heck the neutral position of the rack stroke (). : Refer to -86, "Rack Stroke". b. isassemble steering gear assembly to check the cause that rack stroke is outside of the standard. Steering angles are not adjustable. heck steering gear assembly, steering column assembly and front suspension components for wear or damage if any of the turning angles are different from the specified value. Replace any of them, if any non-standard condition exists. SG

17 < T/RUT GSS > T RG W SY T/RUT GSS T RG W SY omponent unction heck : T RG W SY heck operate heated steering wheel system. Refer to -10, "System escription (eated Steering Wheel)". s the inspection result normal? YS >> Go to -17, "iagnosis rocedure". >> iagnosis rocedure 1. WR SUR GRU RUT 1. Turn ignition switch. 2. Remove the heated steering wheel. Refer to -34, "Removal and nstallation". 3. Turn ignition switch. ever start the engine. 4. Turn heated steering wheel switch. 5. heck voltage between heated steering wheel harness connector terminals. onnector eated steering wheel s the inspection result normal? YS >> G T 2. >> G T T RG W Terminal heck heated steering wheel. Refer to -20, "omponent nspection (eated Steering Wheel)". s the inspection result normal? YS >> >> Replace heated steering wheel. Refer to -34, "Removal and nstallation". 3. GRU RUT heck continuity between heated steering wheel harness connector terminal and ground. onnector eated steering wheel -17 ondition Within 30 seconds after turning the heated steering switch. ther conditions. Ground : Voltage (pprox.) attery voltage 71 2 xisted s the inspection result normal? YS >> G T 4. >> Repair or replace damaged parts. 4. RSS TW T RG W RY T RG W 1. Turn ignition switch. 2. isconnect heated steering wheel relay connector. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 3. isconnect twin switch connector. 4. heck continuity between heated steering wheel relay harness connector terminal and heated steering wheel harness connector terminal. Terminal 0 V ontinuity

18 T RG W SY < T/RUT GSS > eated steering wheel relay 5. heck continuity between heated steering wheel relay harness connector terminal and ground. s the inspection result normal? YS >> G T 5. >> Repair or replace damaged parts. 5. T RG W RY eated steering wheel onnector Terminal onnector Terminal heck heated steering wheel relay. Refer to -20, "omponent nspection (eated Steering Wheel Relay)". s the inspection result normal? YS >> G T 6. >> Replace heated steering wheel relay. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 6.TT UTG T heck the following. attery arness for short or open between battery and fuse block (/). Refer to G-11, "Wiring iagram - T- TRY WR SUY -". 15 fuse [o. 5, located in the fuse block (/)]. Refer to G-131, "use, onnector and Terminal rrangement". use block (/) s the inspection result normal? YS >> G T 7. >> Repair or replace damaged parts. 7. GRU RUT heck continuity between twin switch harness connector terminal and ground. ontinuity xisted onnector eated steering wheel relay Terminal Ground ontinuity 68 5 ot existed onnector Twin switch Terminal Ground ontinuity xisted s the inspection result normal? YS >> G T 8. >> Repair or replace damaged parts. 8. RSS TW T RG W RY / UT. 1. heck continuity between heated steering wheel relay harness connector terminal and / auto amp. harness connector terminal. eated steering wheel relay / auto amp. onnector Terminal onnector Terminal ontinuity xisted 2. heck continuity between heated steering wheel relay harness connector terminal and ground. onnector eated steering wheel relay Terminal Ground ontinuity 68 2 ot existed -18

19 < T/RUT GSS > T RG W SY s the inspection result normal? YS >> G T 9. >> Repair or replace damaged parts. 9. RSS TW / UT. TW SWT 1. heck continuity between / auto amp. harness connector terminal and twin switch harness connector terminal. / auto amp xisted 2. heck continuity between heated steering wheel relay harness connector terminal and ground ot existed s the inspection result normal? YS >> G T 10. >> Repair or replace damaged parts. 10. T RG W SWT heck heated steering wheel switch. Refer to -9, "eated Steering Wheel Switch". s the inspection result normal? YS >> Repair or replace / auto amp. Refer to -201, "Removal and nstallation". >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". omponent nspection (eated Steering Wheel Switch) 1. T RG W SWT heck continuity between heated steering wheel switch connector terminals. When while pushing heated xisted 1 3 steering wheel switch ther condition ot existed s the inspection result normal? YS >> G T 2. >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". 2. T RG W SWT TR heck status between heated steering wheel switch connector terminals. onnect the fuse between the terminals when applying the voltage. s the inspection result normal? YS >> Twin switch onnector Terminal onnector Terminal onnector eated steering wheel relay Terminal eated steering wheel switch Terminal eated steering wheel switch Terminal Ground ondition ondition pply 12 V direct current between terminals 8 and 10. ther condition ontinuity ontinuity : ontinuity Status ndicator lamp turn ot existed -19

20 T RG W SY < T/RUT GSS > >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". omponent nspection (eated Steering Wheel) : T RG W TUTY heck continuity between heated steering wheel connector terminals. heated steering wheel Terminal 1 2 ondition s the inspection result normal? YS >> G T 2. >> Replace heated steering wheel. Refer to -34, "Removal and nstallation". 2. T RG W RS heck resistance between heated steering wheel connector terminals. heated steering wheel Terminal 1 2 eather surface temperature of 20 (68 ) or less eather surface temperature of 30 (86 ) or more ondition s the inspection result normal? YS >> >> Replace heated steering wheel. Refer to -34, "Removal and nstallation". omponent nspection (eated Steering Wheel Relay) 1. T RG W RY TUTY heck continuity between heated steering wheel relay terminals. onnect the fuse between the terminals when applying the voltage. eated steering wheel relay Terminal eather surface temperature of 20 (68 ) ondition ontinuity xisted ot existed Resistance Ω ontinuity : pply 12 V direct current between terminals and 2. xisted ther conditions. ot existed s the inspection result normal? YS >> >> Replace heated steering wheel relay. Refer to -8, "omponent arts ocation (eated Steering Wheel)". -20

21 T RG W SWT TR < T/RUT GSS > T RG W SWT TR omponent unction heck 1. T RG W TR 1. Turn ignition switch. 2. Turn heated steering wheel switch. oes heated steering wheel indicator lamp turn on the lamp? YS >> G T 2. >> Go to -21, "iagnosis rocedure". 2. T RG W TR Turn heated steering wheel switch. oes heated steering wheel indicator lamp turn off the lamp? YS >> >> Go to -21, "iagnosis rocedure". iagnosis rocedure 1. WR SUR GRU RUT 1. Turn ignition switch. ever start the engine. 2. Turn heated steering wheel switch. 3. heck voltage between twin switch harness connector terminals. : : onnector s the inspection result normal? YS >> G T 7. >> G T GRU RUT Twin switch Terminal ondition Within 30 seconds after turning the heated steering switch. ther conditions. 1. Turn ignition switch. 2. isconnect twin switch connector. Refer to -84, "Removal and nstallation". 3. heck continuity between twin switch harness connector terminal and ground. Voltage (pprox.) attery voltage 0 V onnector Twin switch Terminal Ground ontinuity xisted s the inspection result normal? YS >> G T 3. >> Repair or replace damaged parts. 3. RSS TW T RG W RY T RG W 1. isconnect heated steering wheel relay connector. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 2. heck continuity between heated steering wheel relay harness connector terminal and heated steering wheel harness connector terminal. -21

22 T RG W SWT TR < T/RUT GSS > eated steering wheel relay 3. heck continuity between heated steering wheel relay harness connector terminal and ground. s the inspection result normal? YS >> G T 4. >> Repair or replace damaged parts. 4. T RG W RY heck heated steering wheel relay. Refer to -23, "omponent nspection (eated Steering Wheel Relay)". s the inspection result normal? YS >> G T 5. >> Replace heated steering wheel relay. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 5.TT UTG T heck the following. attery arness for short or open between battery and fuse block (/). Refer to G-11, "Wiring iagram - T- TRY WR SUY -". 15 fuse [o. 5, located in the fuse block (/)]. Refer to G-131, "use, onnector and Terminal rrangement". use block (/) s the inspection result normal? YS >> G T 6. >> Repair or replace damaged parts. 6. RSS TW T RG W RY TW SWT 1. heck continuity between / auto amp. harness connector terminal and twin switch harness connector terminal xisted 2. heck continuity between / auto amp. harness connector terminal and ground. s the inspection result normal? YS >> G T 7. >> Repair or replace damaged parts. 7. T RG W SWT Twin switch onnector Terminal onnector Terminal heck heated steering wheel switch. Refer to -9, "eated Steering Wheel Switch". s the inspection result normal? YS >> Repair or replace / auto amp. Refer to -201, "Removal and nstallation" >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". ontinuity xisted onnector eated steering wheel relay Terminal Ground ontinuity 68 5 ot existed / auto amp. Twin switch onnector Terminal onnector Terminal onnector / auto amp. Terminal Ground ontinuity ontinuity ot existed -22

23 T RG W SWT TR < T/RUT GSS > omponent nspection (eated Steering Wheel Switch) 1. T RG W SWT heck continuity between heated steering wheel switch connector terminals. eated steering wheel switch Terminal 1 3 s the inspection result normal? YS >> G T 2. >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". 2. T RG W SWT TR heck status between heated steering wheel switch connector terminals. onnect the fuse between the terminals when applying the voltage. eated steering wheel switch Terminal + : pply 12 V direct current between terminals 8 and ndicator lamp turn ther condition ot existed s the inspection result normal? YS >> >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". omponent nspection (eated Steering Wheel Relay) 1. T RG W RY TUTY ondition When while pushing heated steering wheel switch ther condition ondition heck continuity between heated steering wheel relay terminals. onnect the fuse between the terminals when applying the voltage. eated steering wheel relay Terminal ondition ontinuity xisted ot existed ontinuity : pply 12 V direct current between terminals and 2. xisted ther conditions. ot existed s the inspection result normal? YS >> >> Replace heated steering wheel relay. Refer to -8, "omponent arts ocation (eated Steering Wheel)". Status -23

24 T RG W SY S T TVT < SYT GSS > SYT GSS T RG W SY S T TVT escription : The heated steering wheel does not warm up. The heated steering wheel system cannot be turned. iagnosis rocedure : WR SUR GRU RUT 1. Turn ignition switch. 2. Remove the heated steering wheel. Refer to -34, "Removal and nstallation". 3. Turn ignition switch. ever start the engine. 4. Turn heated steering wheel switch. 5. heck voltage between heated steering wheel harness connector terminals. onnector eated steering wheel s the inspection result normal? YS >> G T 2. >> G T T RG W Terminal ondition heck heated steering wheel. Refer to -20, "omponent nspection (eated Steering Wheel)". s the inspection result normal? YS >> >> Replace heated steering wheel. Refer to -34, "Removal and nstallation". 3. GRU RUT heck continuity between heated steering wheel harness connector terminal and ground. onnector eated steering wheel Terminal Within 30 seconds after turning the heated steering switch. ther conditions. Ground Voltage (pprox.) attery voltage s the inspection result normal? YS >> G T 4. >> Repair or replace damaged parts. 4. RSS TW T RG W RY T RG W 1. Turn ignition switch. 2. isconnect heated steering wheel relay connector. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 3. isconnect twin switch connector. 4. heck continuity between heated steering wheel relay harness connector terminal and heated steering wheel harness connector terminal. 0 V ontinuity 71 2 xisted -24

25 T RG W SY S T TVT < SYT GSS > eated steering wheel relay 5. heck continuity between heated steering wheel relay harness connector terminal and ground. s the inspection result normal? YS >> G T 5. >> Repair or replace damaged parts. 5. T RG W RY eated steering wheel onnector Terminal onnector Terminal heck heated steering wheel relay. Refer to -20, "omponent nspection (eated Steering Wheel Relay)". s the inspection result normal? YS >> G T 6. >> Replace heated steering wheel relay. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 6.TT UTG T heck the following. attery arness for short or open between battery and fuse block (/). Refer to G-11, "Wiring iagram - T- TRY WR SUY -". 15 fuse [o. 5, located in the fuse block (/)]. Refer to G-131, "use, onnector and Terminal rrangement". use block (/) s the inspection result normal? YS >> G T 7. >> Repair or replace damaged parts. 7. GRU RUT heck continuity between twin switch harness connector terminal and ground. ontinuity xisted onnector eated steering wheel relay Terminal Ground ontinuity 68 5 ot existed onnector Twin switch Terminal Ground ontinuity xisted s the inspection result normal? YS >> G T 8. >> Repair or replace damaged parts. 8. RSS TW T RG W RY / UT. 1. heck continuity between heated steering wheel relay harness connector terminal and / auto amp. harness connector terminal. eated steering wheel relay / auto amp. onnector Terminal onnector Terminal ontinuity xisted 2. heck continuity between heated steering wheel relay harness connector terminal and ground. eated steering wheel relay ontinuity onnector Terminal Ground 68 2 ot existed -25

26 T RG W SY S T TVT < SYT GSS > s the inspection result normal? YS >> G T 9. >> Repair or replace damaged parts. 9. RSS TW / UT. TW SWT 1. heck continuity between / auto amp. harness connector terminal and twin switch harness connector terminal. / auto amp. Twin switch onnector Terminal onnector Terminal ontinuity xisted 2. heck continuity between heated steering wheel relay harness connector terminal and ground. onnector eated steering wheel relay Terminal Ground ontinuity ot existed s the inspection result normal? YS >> G T 10. >> Repair or replace damaged parts. 10. T RG W SWT heck heated steering wheel switch. Refer to -9, "eated Steering Wheel Switch". s the inspection result normal? YS >> Repair or replace / auto amp. Refer to -201, "Removal and nstallation". >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". -26

27 T RG W SWT TR S T TUR < SYT GSS > T RG W SWT TR S T TUR escription eated steering wheel switch indicator lamp does not turn on the lamp. eated steering wheel switch indicator lamp does not turn off the lamp. iagnosis rocedure 1. WR SUR GRU RUT 1. Turn ignition switch. ever start the engine. 2. Turn heated steering wheel switch. 3. heck voltage between twin switch harness connector terminals. : : onnector s the inspection result normal? YS >> G T 7. >> G T GRU RUT Twin switch Terminal ondition Within 30 seconds after turning the heated steering switch. ther conditions. 1. Turn ignition switch. 2. isconnect twin switch connector. Refer to -84, "Removal and nstallation". 3. heck continuity between twin switch harness connector terminal and ground. Voltage (pprox.) attery voltage 0 V onnector Twin switch Terminal Ground ontinuity xisted s the inspection result normal? YS >> G T 3. >> Repair or replace damaged parts. 3. RSS TW T RG W RY T RG W 1. isconnect heated steering wheel relay connector. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 2. heck continuity between heated steering wheel relay harness connector terminal and heated steering wheel harness connector terminal. eated steering wheel relay Twin switch onnector Terminal onnector Terminal ontinuity xisted 3. heck continuity between heated steering wheel relay harness connector terminal and ground. eated steering wheel relay ontinuity onnector Terminal Ground 68 5 ot existed s the inspection result normal? -27

28 T RG W SWT TR S T TUR < SYT GSS > YS >> G T 4. >> Repair or replace damaged parts. 4. T RG W RY heck heated steering wheel relay. Refer to -23, "omponent nspection (eated Steering Wheel Relay)". s the inspection result normal? YS >> G T 5. >> Replace heated steering wheel relay. Refer to -8, "omponent arts ocation (eated Steering Wheel)". 5.TT UTG T heck the following. attery arness for short or open between battery and fuse block (/). Refer to G-11, "Wiring iagram - T- TRY WR SUY -". 15 fuse [o. 5, located in the fuse block (/)]. Refer to G-131, "use, onnector and Terminal rrangement". use block (/) s the inspection result normal? YS >> G T 6. >> Repair or replace damaged parts. 6. RSS TW T RG W RY TW SWT 1. heck continuity between / auto amp. harness connector terminal and twin switch harness connector terminal. / auto amp xisted 2. heck continuity between / auto amp. harness connector terminal and ground. s the inspection result normal? YS >> G T 7. >> Repair or replace damaged parts. 7. T RG W SWT Twin switch onnector Terminal onnector Terminal onnector / auto amp. Terminal Ground ontinuity ontinuity ot existed heck heated steering wheel switch. Refer to -9, "eated Steering Wheel Switch". s the inspection result normal? YS >> Repair or replace / auto amp. Refer to -201, "Removal and nstallation" >> Replace heated steering wheel switch. Refer to -84, "Removal and nstallation". -28

29 S, VRT RSSS (V) TRUG < SYT GSS > S, VRT RSSS (V) TRUG V Troubleshooting hart 2W Use the chart below to find the cause of the symptom. f necessary, repair or replace these parts. : Reference -31, "nspection" -31, "nspection" -52, "2W : nspection and djustment" -52, "2W : nspection and djustment" -52, "2W : nspection and djustment" -31, "nspection" -15, "nspection" -15, "nspection" -22, "hecking", -175, "hecking" -15, "nspection" -44, "2W : xploded View" -37, "nspection and djustment" -36, "xploded View" -44, "2W : xploded View" -52, "2W : nspection and djustment" V in section. V in section. V in X, RX, SU, RSU section. V in WT section. V in WT section. V in RX section. V in R section. ossible cause and SU RTS Symptom : pplicable W Steering luid level ir in hydraulic system uter/inner socket ball joint swinging torque uter/inner socket ball joint rotating torque uter/inner socket ball joint end play Steering fluid leakage Steering wheel play Steering gear rack sliding force rive belt looseness mproper steering wheel mproper installation or looseness of tilt lock lever ounting looseness Steering column deformation or damage mproper installation or looseness of steering column Steering linkage looseness 4WS front actuator (with 4WS) RR RT X and SUSS TR R W RV R oise Shake Vibration Shimmy udder -29

30 S, VRT RSSS (V) TRUG < SYT GSS > Use the chart below to find the cause of the symptom. f necessary, repair or replace these parts. Reference -31, "nspection" -31, "nspection" -62, "W : nspection" -62, "W : nspection" -62, "W : nspection" -31, "nspection" -15, "nspection" -15, "nspection" -22, "hecking", -175, "hecking" -15, "nspection" -54, "W : xploded View" -37, "nspection and djustment" -36, "xploded View" -54, "W : xploded View" V in section. V in section. V in X, RX, SU, RSU section. V in WT section. V in WT section. V in X, RX section. V in R section. ossible cause and SU RTS luid level ir in hydraulic system uter/inner socket ball joint swinging torque uter/inner socket ball joint rotating torque uter/inner socket ball joint end play Steering fluid leakage Steering wheel play Steering gear rack sliding force rive belt looseness mproper steering wheel mproper installation or looseness of tilt lock lever ounting looseness Steering column deformation or damage mproper installation or looseness of steering column Steering linkage looseness RR RT X and SUSS TR R W RV R Symptom : pplicable Steering oise Shake Vibration Shimmy udder -30

31 < R T > R T WR RG U nspection U V WR RG U 1. heck fluid level with engine stopped. 2. nsure that fluid level is between and X. 3. luid levels at T and are different. o not confuse them. : T : luid temperature ( ) : luid temperature 0 30 (32 86 ) Recommended fluid luid capacity : Refer to -12, "luids and ubricants". : Refer to -85, "General Specifications". The fluid level should not exceed the X line. xcessive fluid causes fluid leakage from the cap. ever reuse drained power steering fluid. lways use the specified fluid. Refer to -12, "luids and ubricants". U G heck hydraulic connections for fluid leakage, cracks, damage, looseness, or wear. 1. Run the engine until the fluid temperature reaches 50 to 80 (122 to 176 ) in reservoir tank, and keep engine speed idle. 2. Turn steering wheel several times from full left stop to full right stop. 3. old steering wheel at each lock position for five seconds and carefully check for fluid leakage. ever hold the steering wheel in a locked position for more SG0506 than 10 seconds. (There is the possibility that power steering oil pump assembly may be damaged.) 4. f fluid leakage at connections is noticed, then loosen flare nut and then retighten. o not overtighten connector as this can damage -ring, washer and connector. 5. f fluid leakage from oil pump is noticed, check oil pump. Refer to -77, "V56V : nspection" (V50V), -71, "VQ37VR : nspection" (VQ37VR). 6. heck steering gear boots for accumulation of fluid leaked from steering gear. R G YRU SY f air bleeding is not complete, the following symptoms can be observed. ubbles are created in reservoir tank. licking noise can be heard from oil pump. xcessive buzzing in the oil pump. T: luid noise may occur in the steering gear or oil pump. This does not affect performance or durability of the system. 1. Turn steering wheel several times from full left stop to full right stop with engine off. ill reservoir tank with a sufficient amount of fluid so that fluid level is not below the line while turning steering wheel. SG

32 < R T > WR RG U 2. Start the engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leakage. 3. Repeat step 2 above several times at approximately 3 seconds intervals. ever hold the steering wheel in a locked position for more than 10 seconds. (There is the possibility that oil pump may be damaged.) 4. heck fluid for bubbles and white contamination. 5. Stop the engine if bubbles and white contamination do not drain out. erform step 2 and 3 above after waiting until bubbles and white contamination drain out. 6. Stop the engine, and then check fluid level. -32

33 < R T > RG W nspection RG W : RG W X Y 1. heck installation conditions of steering gear assembly, front suspension assembly, axle and steering column assembly. 2. heck if movement exists when steering wheel is moved up and down, to the left and right and to the axial direction. Steering wheel axial end play 3. heck the following items when steering wheel axial end play is out of the standard. heck the steering column assembly mounting condition. Refer to -36, "xploded View". heck steering gear assembly mounting condition for looseness. Refer to -44, "2W : xploded View" (2W), -54, "W : xploded View" (W). RG W Y : Refer to -85, "Steering Wheel xial nd lay and lay". 1. Turn steering wheel so that front wheels come to the straight-ahead position. 2. Start the engine and lightly turn steering wheel to the left and right until front wheels start to move. 3. easure steering wheel movement on the outer circumference. Steering wheel play : Refer to -85, "Steering Wheel xial nd lay and lay". 4. heck the following items when steering wheel play is out of the standard. heck backlash for each joint of steering column assembly. heck installation condition of steering gear assembly. -33

34 < RV T > RG W RV T RG W xploded View : SG0814G 1. Steering switch 2. Steering wheel 3. Steering wheel rear cover : Replace the parts as a set. Refer to G-4, "omponents" for symbols in the figure. Removal and nstallation : RV T: When reconnecting spiral cable, fix cable with a tape so that fixing case and rotating part keep aligned. This will omit neutral position alignment procedure during spiral cable installation. 1. Set the vehicle to the straight-ahead position. 2. Remove driver air bag module. Refer to SR-11, "Removal and nstallation". 3. isconnect steering switch connector. 4. Remove steering wheel lock nut after steering is locked. 5. Remove steering wheel with the steering wheel puller () [S: ( )]. SG0341ZZ T ote the following, and install in the reverse order of removal. ever twist spiral cable freely on excessively after it becomes tight (doing so may cause the cable to tear off). T: -34

35 < RV T > RG W heck the spiral cable neutral position after replacing or rotating spiral cable. Refer to SR-14, "Removal and nstallation". isassembly and ssembly SSSY 1. Remove steering wheel assembly. 2. Remove steering wheel rear cover. 3. isconnect horn connector. 4. Remove steering switch. SSY nstall in the reverse order of removal. :

36 < RV T > RG U xploded View RG U : G0058G 1. racket 2. Steering column mounting bracket 3. Upper joint 4. Telescopic motor 5. Tilt motor 6. Steering column assembly Refer to G-4, "omponents" for symbols in the figure. Removal and nstallation -36 : RV ever give axial impact to steering column assembly during removal. ever move steering gear assembly when removing steering column assembly. ever rotate the lower shaft. (With 4WS) 1. Set the vehicle to the straight-ahead position. 2. erform adjustment before removal. (With 4WS) Refer to -37, "nspection and djustment". 3. lace the tilt to the highest level. lace the telescopic to the longest level. 4. Remove driver air bag module. 5. Remove steering wheel. Refer to -34, "Removal and nstallation". 6. Remove the instrument side finisher. Refer to -13, "Removal and nstallation". 7. Remove instrument lower panel. Refer to -13, "Removal and nstallation". 8. Remove the steering column cover. Refer to -13, "Removal and nstallation". 9. Remove spiral cable. Refer to SR-14, "Removal and nstallation". 10. Remove combination switch. Refer to S-80, "Removal and nstallation". 11. Remove knee protector. 12. isconnect each switch harness connectors installed to steering column assembly. 13. Remove the upper joint mounting bolt and nut (lower shaft side), and separate the joint from lower shaft. 14. Remove steering column assembly.

37 < RV T > RG U f necessary, remove telescopic motor, tilt motor, and brackets. 15. erform inspection after removal. Refer to -37, "nspection and djustment". T ote the following, and install in the reverse order of removal. To install the slide plate (1), create clearance () in the steering column assembly mounting area (2) as follows. : 2.0 mm (0.079 in) SG0315ZZ Tighten the mounting bolts and nuts in the order shown in the figure when installing the steering column assembly. e careful of the following points when installing the steering column assembly. ever give axial impact to steering column assembly during installation. ever move steering gear assembly. ever reuse the joint mounting nut (lower shaft side). erform inspection after installation. Refer to -37, "nspection and djustment". nspection and djustment G0026ZZ : UT R RV djust neutral position of 4WS front actuator. (With 4WS) Refer to -87, "Work rocedure (attern 1)". TR RV heck each part of steering column assembly for damage or other malfunctions. Replace if necessary. easure steering column assembly rotating torque using a preload gauge [S: 3127S000 ( )]. Replace steering column assembly if outside the standard. Rotating torque : Refer to -85, "Steering olumn perating Range". easure the length () as shown, if vehicle has been involved in a minor collision. Replace steering column assembly if out side the standard. : Refer to -85, "Steering olumn ength". SG0797ZZ -37

38 < RV T > RG U nstall the bracket and steering column housing so that the clearance () is within the specified range as described below. Replace steering column assembly if out side the standard. : Refer to -85, "Steering olumn ounting imensions". SG0795ZZ TR T heck each part of steering column assembly for damage or other malfunctions. Replace if necessary. heck the steering wheel play, neutral position steering wheel, steering wheel turning torque, and front wheel turning angle. Refer to -15, "nspection". heck tilt and telescopic mechanism operating range tilt operating range (T), telescopic operating range () as shown in the figure. T : Refer to -85, "Steering olumn perating Range". : Refer to -85, "Steering olumn perating Range". djust neutral position of steering angle sensor. (Without 4WS) Refer to R-68, "Work rocedure". djust neutral position of 4WS front actuator. (With 4WS) Refer to -87, "Work rocedure (attern 2)". SG0798ZZ -38

39 < RV T > WR WTUT 4WS WTUT 4WS : xploded View WR : Steering column assembly 2. ollar 3. ole cover seal 4. lamp 5. ole cover 6. ower shaft 7. ower joint Refer to G-4, "omponents" for symbols in the figure. WTUT 4WS : Removal and nstallation RV SG0800G : Set vehicle to the straight-ahead position. 2. ix the steering wheel. 3. Remove lower joint fixing bolt (steering gear side). 4. Separate the lower shaft from the steering gear assembly by sliding the slide shaft (: sliding range). Spiral cable may be cut if steering wheel turns while separating steering column assembly and steering gear assembly. e sure to secure steering wheel using string to avoid turning. 5. Remove the side brake wire clamp stay. 6. Remove the hole cover mounting nuts. 7. Remove the upper joint fixing bolt and nut (lower shaft side). SG0801ZZ 8. Remove the lower shaft and hole cover. 9. Remove collar, hole cover seal, clamp and hole cover. 10. erform inspection after removal. Refer to -40, "WTUT 4WS : nspection". T ote the following, and install in the reverse order of removal. Spiral cable may be cut if steering wheel turns while separating steering column assembly and steering gear assembly. e sure to secure steering wheel using string to avoid turning. -39

40 < RV T > WR Tighten the clamp to the specified torque and check the clamp length (). lamp length : mm ( in) When installing lower joint to steering gear assembly, follow the procedure listed below. - Set rack of steering gear in the neutral position. T: To get the neutral position of rack, turn gear-sub assembly and measure the distance of inner socket, and then measure the intermediate position of the distance. SG0094ZZ - lign rear cover cap projection () with the marking position of gear housing assembly (). : olt - nstall slit part of lower joint () aligning with the rear cover cap projection (). ake sure that the slit part of lower joint () is aligned with rear cover cap projection () and the marking position of gear housing assembly (). erform inspection after installation. Refer to -40, "WTUT 4WS : nspection". WTUT 4WS : nspection SG0111ZZ : TR RV heck the sliding range of the lower shaft. heck the sliding range () (between the extended position and the contracted position) of the lower shaft. Sliding range : Refer to -86, "ower Shaft Sliding Range". heck each part of lower shaft for damage or other malfunctions. Replace if there are. SG0801ZZ TR T djust neutral position of steering angle sensor. Refer to R-68, "Work rocedure". heck if steering wheel turns smoothly when it is turned several times fully to the end of the left and right. heck the steering wheel play, neutral position steering wheel, steering wheel turning torque, and front wheel turning angle. Refer to -15, "nspection". WT 4WS -40

41 < RV T > WT 4WS : xploded View WR : WT 4WS : Removal and nstallation RV SG0799G 1. Steering column assembly 2. ollar 3. ower shaft (with 4WS front actuator) 4. lamp 5. ole cover 6. lamp (lower) 7. ole cover seal (lower) 8. ower joint Refer to G-4, "omponents" for symbols in the figure. 1. Set vehicle to the straight-ahead position. 2. erform adjustment before removal. Refer to -43, "WT 4WS : nspection and djustment". 3. ix the steering wheel. 4. ix the lower shaft (with 4WS front actuator) so that the positions () and () are aligned. ever damage the lower shaft (with 4WS front actuator) and hole cover. 5. Remove lower joint fixing bolt (steering gear side). : SG0802ZZ 6. Separate the lower shaft (with 4WS front actuator) from the steering gear assembly by sliding the slide shaft (: sliding range). Spiral cable may be cut if steering wheel turns while separating steering column assembly and steering gear assembly. e sure to secure steering wheel using string to avoid turning. 7. Remove the hole cover mounting nuts. 8. Remove the upper joint fixing bolt and nuts (lower shaft side). 9. isconnect 4WS front actuator harness connector. 10. Remove the lower shaft (with 4WS front actuator) and hole cover assembly. -41 SG0803ZZ

42 < RV T > WR ever damage the lower shaft (with 4WS front actuator) and hole cover. 11. erform inspection after removal. Refer to -43, "WT 4WS : nspection and djustment". T ote the following, and install in the reverse order of removal. Spiral cable may be cut if steering wheel turns while separating steering column assembly and steering gear assembly. e sure to secure steering wheel using string to avoid turning. When installing lower joint to steering gear assembly, follow the procedure listed below. - Set rack of steering gear in the neutral position. T: To get the neutral position of rack, turn gear-sub assembly and measure the distance of inner socket, and then measure the intermediate position of the distance. - lign rear cover cap projection () with the marking position of gear housing assembly (). : olt - nstall slit part of lower joint () aligning with the rear cover cap projection (). ake sure that the slit part of lower joint () is aligned with rear cover cap projection () and the marking position of gear housing assembly (). erform inspection after installation. Refer to -43, "WT 4WS : nspection and djustment". WT 4WS : isassembly and ssembly SG0111ZZ : SSSY ever rotate the 4WS front actuator and the spiral cable counterclockwise (actuator upper side). 1. Remove the collar. 2. Remove the clamp (lower) and the hole cover seal (lower) from the hole cover. 3. Remove the clamp and the lower shaft (with 4WS front actuator) from the hole cover. SSY 1. erform the spiral cable neutral adjustment as per the following procedure. a. Rotate the spiral cable (1) clockwise () slowly until it stops. b. Rotate the spiral cable 2 turning counterclockwise () slowly. lign the spiral cable with the notch (). T: The spiral cable turns approximately 5 turning in maximum. 2. nstall the lower shaft (4WS front actuator) to the hole cover, and install the clamp to the hole cover. ssemble the clamp so as not to misalign the spiral cable position. ever reuse the clamp. 3. nstall the collar (1) to the lower shaft (with 4WS front actuator). o not misalign the positions () and (). ever damage the collar (1) and the hole cover (2). 4. nstall the hole cover seal (lower) to the hole cover (lower), and install the clamp (lower). ever reuse the clamp (lower). G0014ZZ -42 SG0090ZZ