AIR CONDITIONING (AUTOMATIC A/C)

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1 AIR NDITINING (AUTMATI A/) FRM WER SURE SYSTEM (SEE AGE 66) 50A HTR F FUSILE LINK LK 0A HEATER 9 ID IH H6 HEATER RELAY A A A 5 I8 5 IJ - Y LWER MTR L I0 M IJ 5 LWER RESISTR (LW SEED) I8 GND M + SI - Y Y- W IJ Y- W 6 IJ L- A A A A9 A/ LWER MTR LINEAR NTRLLER A IF II 08

2 FRM WER SURE SYSTEM (SEE AGE 66) 5A EU- G 0 + A IG 8 A A 9 A, A0, A A/ AMLIFIER LW A HR 6 A GND A W- R W- R L- 5 IH IL5 5 W- R I A I L- L- 09

3 AIR NDITINING (AUTMATI A/) A 9 A, A0 A/ AMLIFIER, A MSET 9 L- AUT S- FF SET L HI 7 M 5 M 6 TSET 5 S- MAUT 8 L- FAE S- DEF 0 L- DEF 0 /L MSET 6 A LAUT FF 0 A SET 5 A LL 9 A LHI A LM A LM TSET 8 A MAUT 5 A LNT A DEF A LDEF 9 L/L GND A GR L LG L- Y L- G- G- W G- R G- Y G- - H A, H5 HEATER NTRL SW I 0

4 A 9 A, A0 A/ AMLIFIER, A L- FT FAE 5 /L 6 FT 7 F/D 7 DEF 8 R- W GR R- W G- GR 0 9 A LFT SG 5 S5 A0 AIR ENT MDE NTRL SER MTR GR ENT R- W 5 /L 6 FT 7 F/D 8 DEF H A, H5 HEATER NTRL SW LED+ 7 A M NTRL IRUIT A IG GND

5 AIR NDITINING (AUTMATI A/) A 9 A, A0, A A/ AMLIFIER 5 E L- FRS S- R/F L- A/ S- A/ ER 6 A TW A A AT 8 IGN AMH A AM 5 A S5 8 A T TS L Y Y Y- Y- Y- R Y- R Y- G Y- G LRE LFRS SF/R LA/ SA/ A A/ SW IL THW - Y U U A - Y 5 A/ AT 7 TAH I I 6 IL5 IL5 IL5 - Y - Y A7 A/ SLAR SENSR IG+ GND LED+ RDEF L- Y E ENGINE NTRL MDULE I - Y 5 FRM REAR WINDW DEFGGER RELAY M WARM L I A9 AIR MIX NTRL SER MTR

6 A 9 A, A0, A A/ AMLIFIER SG 9 A TR 6 TE 8 TAM 7 SEED 0 AMUT 5 A 9 SW R- Y IL5 0 9 IL D D D A A6 A/ RM TEM. SENSR D A D A A A/ EARATR TEM. SENSR D A D IM D A R- Y 6 IH A A/ AMIENT TEM. SENSR R- Y IH - W FRM SEEDMETER [M. METER] T LK A A/ DUAL RESSURE SW W- LG L- L- L- IH IH IH

7 AIR NDITINING (AUTMATI A/) * : FLR SHIFT * : LUMN SHIFT IH A 9 A, A0, A A/ AMLIFIER TI AIR A AIF A LKIN MG A 8 8 IL L R- L 6 0 IM 8 Y- G IL M E 7 6 Y Y- G MG LT RELAY FRM FAN N. RELAY Y- L R- L (*) Y- G (*) D 7 DIDE(A/) 5 M A A/ MAGNETI LUTH AND LK SENSR A8 AIR INLET NTRL SER MTR

8 SYSTEM UTLINE. HEATER LWER MTR ERATIN urrent is applied at all times through HTR (50A) fuse to TERMINAL of the heater relay. When the ignition SW is turned on, current flows through HEATER (0A) fuse to TERMINAL of the heater relay to TERMINAL 5 to TERMINAL HR of the A/ amplifier. At the same time, current also flows from HEATER (0A) fuse to TERMINAL IG of the A/ amplifier. (Low speed operation) When the blower SW (Heater control SW) is pushed to LW SEED position, the current to TERMINAL HR of the A/ amplifier flows to TERMINAL GND of the A/ amplifier to GRUND and turns the heater relay on. As a result, the current to TERMINAL of the heater relay flows to TERMINAL to TERMINAL of the blower motor to TERMINAL to TERMINAL of the blower resistor to TERMINAL to GRUND and causes the blower motor to rotate at low speed. (High speed operation) When the blower SW (Heater control SW) is pushed to HIGH SEED position, the current to TERMINAL HR of the A/ amplifier flows to TERMINAL GND of the A/ amplifier to GRUND and turns the heater relay on. At the same time, the current to TERMINAL of the A/ blower motor linear controller also flows to TERMINAL of the controller TERMINAL LW of the A/ amplifier (which is activated when the blower SW is pushed high speed position) to TERMINAL GND to GRUND without passing through the blower resistor, causing the blower motor to rotate at high speed. (DEF synchronized control function) When the DEF SW in the air vent mode control SW (Heater control SW) is pushed, a signal is input into TERMINAL S-DEF of the A/ amplifier. This causes the A/ on and the blower SW is turned to auto mode. (Auto function) When the auto SW in the heater control SW is pushed, a signal is input into TERMINAL S-MAUT of the A/ amplifier. At the same time, the room temp. decided by the air mix control SW (Heater control SW) is input into TERMINAL TSET of the A/ amplifier as a signal, the signal of solar sensor is input into TERMINAL TS of the A/ amplifier and the signal of A/ room temp. sensor is input into TERMINAL TR of the A/ amplifier. As a result, A/ system is activated by the signal of each sensor to get the room temp. decided by the air mix control SW and the A/ system takes the proper measures for it.. AIR INLET NTRL SER MTR ERATIN (Switching from FRESH to REIR) With the ignition SW turned on, the current flows from HEATER (0A) fuse to TERMINAL IG of the A/ amplifier to TERMINAL AIR to TERMINAL 7 of the air inlet control servo motor to TERMINAL 6 to TERMINAL AIF of the A/ amplifier to TERMINAL GND to GRUND, the motor rotates and the damper moves to the REIR side. When the damper operates with the A/ SW at REIR position, the damper position signal is input from TERMINAL 5 of the servo motor to TERMINAL TI of the EU (uilt into the A/ amplifier). As a result, current to the servo motor circuit is cut off by the EU, so the damper stops at that position. (Switching from REIR to FRESH) With the ignition SW turned on, when the REIR/FRESH SW is switched to the FRESH side, the current flows from TERMINAL IG of the A/ amplifier to TERMINAL AIF to TERMINAL 6 of the air inlet control servo motor to TERMINAL 7 to TERMINAL AIR of the A/ amplifier to TERMINAL GND to GRUND, The motor rotates and the damper stops at that position. 5

9 AIR NDITINING (AUTMATI A/). ERATIN F AIR ENT MDE NTRL SER MTR (Switching from DEF to FAE) When the air vent mode control SW (Heater control SW) is changed from DEF position to FAE position, a signal is input into TERMINAL of the air vent mode control servo motor from TERMINAL FAE of the A/ Amplifier. This causes the servo motor to rotate and the damper to move from DEF position to FAE position. (Switching from FAE to DEF) When the air vent mode control SW (Heater control SW) is changed from FAE position to DEF position, a signal is input into TERMINAL S-DEF of the A/ amplifier from TERMINAL DEF of the heater control SW. As a result, a signal is input from TERMINAL DEF of the A/ amplifier into TERMINAL 8 of the air vent mode control servo motor, causing the servo motor to rotate and the damper to move from FAE position to DEF position. ERATIN F AIR MIX NTRL SER MTR When the temperature SW (Heater control SW) is turned to L side the current flows from TERMINAL AM of the A/ amplifier to TERMINAL of the air mix control servo motor to motor to TERMINAL to TERMINAL AMH of the A/ amplifier to GRUND and the motor rotates. The damper opening angle at this time is input from TERMINAL of the servo motor to TERMINAL T of the A/ amplifier, this is used to determine the DAMER ST position and maintain the set temperature. When the air mix control servo SW is turned to the HT side, the current flows from TERMINAL AMH of the A/ amplifier to TERMINAL of the air mix control servo motor to motor to TERMINAL to TERMINAL AM of the A/ amplifier, rotating the motor in reverse and switching the damper from L to HT side. 5. AIR NDITINING ERATIN The A/ amplifier receives various signals, I.E., the engine RM from the igniter, outlet temperature signal from the A/ ambient temp. sensor, coolant temperature from the A/ thermistor and the lock signal from the A/ compressor, etc. When the engine is started and the A/ SW is on, a signal is input to the A/ amplifier. As a result, the ground circuit in the A/ amplifier is closed and current flows from HEATER (0A) fuse to TERMINAL of the MG LT relay to TERMINAL to TERMINAL of the diode (A/) to TERMINAL to TERMINAL MG of the A/ amplifier to TERMINAL GND to GRUND, turning the MG LT relay on, so that the magnetic clutch is on and the A/ compressor operates. At the same time, the engine control module. Detects the magnetic clutch is on and the A/ compressor operates. pen direction to avoid lowering the engine RM during A/ operating. If the A/ amplifier detects the following conditions, it stops the air conditioning: The temperature at the air vents is low. There is a marked difference between the compressor speed and the engine speed. The refrigerant pressure is abnormally high or abnormally low. The engine speed decreased. Rapid acceleration occurs. 6

10 SERIE HINTS A A/ DUAL RESSURE SW - : pen above approx. 5.5 kgf/cm (0 psi, 50 kpa) or 7 kgf/cm (8 psi, 68 kpa) A A/ MAGNETI LUTH -GRUND : Approx..7 Ω A9 (A), A0 (), A () A/ AMLIFIER +-GRUND : Always approx. volts IG-GRUND : Approx. volts with the ignition SW at N position HR-GRUND : Approx. volts with the ignition SW at N position and do not turn the blower motor elow volts with the ignition SW at N position and turn the blower motor SW-GRUND : elow volts with the ignition SW at N position A-GRUND : elow volts at start the engine, operate the compressor or more volts at start the engine, do not operate the compressor LW-GRUND : elow.5 volts with the ignition SW on and turn the blower motor S5-SG : - 6 volts with the ignition SW at N position SG-GRUND : Always continuity AMH-AM :.-.9 volts with the ignition SW off AIF-GRUND : Approx. volts with the FRESH SW on AIR-GRUND : Approx. volts with the REIR SW on FAE-GRUND : Approx. volts with the FAE SW on DEF-GRUND : Approx. volts with the DEF SW on GND-GRUND : Always continuity : ARTS LATIN ode See age ode See age ode See age A 0 A6 5 A 0 (Floor Shift) (Floor Shift) A7 D7 A 0 A9 A (Floor Shift) (Floor Shift) (Floor Shift) A8 E 5 (olumn Shift) (Floor Shift) (Floor Shift) F 0 A0 A9 (Floor Shift) H A (Floor Shift) (Floor Shift) 5 (olumn Shift) A A0 (Floor Shift) H5 (Floor Shift) (Floor Shift) 5 (olumn Shift) A A9 (Floor Shift) H6 (Floor Shift) (Floor Shift) 5 (olumn Shift) A A6 (Floor Shift) 5 (Floor Shift) : RELAY LKS ode See age Relay locks (Relay lock Location) 8 8 Engine Room R/ (Engine ompartment Left) 7

11 AIR NDITINING (AUTMATI A/) : JUNTIN LK AND WIRE HARNESS NNETR ode See age Junction lock and Wire Harness (onnector Location) ID 0 Instrument anel Wire and Instrument anel J/ (Lower Finish anel) Engine Room Main Wire and Driver Side J/ (Left Kick anel) M owl Wire and Driver Side J/ (Left Kick anel) G Engine Room Main Wire and Engine Room J/ (Engine ompartment Left) A 6 owl Wire and enter J/ (ehind Glove ox) 6 Instrument anel Wire and enter J/ (ehind Glove ox) : NNETR JINING WIRE HARNESS AND WIRE HARNESS ode See age Joining Wire Harness and Wire Harness (onnector Location) E 0 Engine Wire and Engine Room Main Wire (Under the Engine Room J/) (Floor Shift) IH 6 (olumn Shift) Engine Room Main Wire and owl Wire (Left Kick anel) (Floor Shift) IH 6 (olumn Shift) (Floor Shift) IH 6 (olumn Shift) Engine Room Main Wire and owl Wire (Right Kick anel) (Floor Shift) IJ 6 (olumn Shift) owl Wire and A/ Sub Wire (ehind the Steering Wheel) IL 8 (olumn Shift) IL 8 (olumn Shift) Instrument anel Wire and owl Wire (ehind the Glove ox) 8 (olumn Shift) IL5 8 (olumn Shift) Instrument anel Wire and owl Wire (Right Kick anel) IM 8 (olumn Shift) Engine Wire and Instrument anel Wire (Right Kick anel) : GRUND INTS ode See age Ground oints Location (Floor Shift) IF 6 (olumn Shift) Left Kick anel (Floor Shift) IH 6 (olumn Shift) Instrument anel race (Floor Shift) II 6 (olumn Shift) Right Kick anel : SLIE INTS ode See age Wire Harness with Splice oints ode See age Wire Harness with Splice oints I I Instrument anel Wire 8 (olumn Shift) 8 (olumn Shift) owl Wire I0 I8 A/ Sub Wire 8 (olumn Shift) 8 (olumn Shift) 8

12 A LAK A GRAY A LAK A9 (A) X X 5 6 X 8 9 X 5 6 X 8 X 0 A0 () A () A A X X 5678 X 0 X 6 90 A6 A7 A8 A9 A0 X X X A9 5 D7 RANGE E X X X X X X X X X X 5 X 7 X F LAK H (A) RANGE H5 () RANGE (See age 9) X X 5 X X X X X X 5 X X 9 X X X H6 5 9

Air Conditioning 4RUNNER (EM03M0U) Y R 15A IG1 60A HEATER Y R Y R Y R Y R E E C E E D. Junction Connector Y R W B HEATER Y R. Relay.

Air Conditioning 4RUNNER (EM03M0U) Y R 15A IG1 60A HEATER Y R Y R Y R Y R E E C E E D. Junction Connector Y R W B HEATER Y R. Relay. ir Conditioning Y (T) (IG) 8 J 60 HETE 5 IG 0 E Y Y Y Y E E C E E D J 3 W 7. 5 HETE NO. 40 G Y IC4 Y 4 Y 5 3 HETE elay 36 IC4 37 IC4 3 C E J D Y 5 3 IC4 IM 43 Y Y IC4 MG CT elay 3 ressure SW 5 Y G IN Y