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.

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1 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 Y W 3 lower Motor Controller G Y + W 3 4 GND M VM SI lower Motor /C ock Sensor /C Magnetic Clutch 3 G W G G J4 W W E II 358 4UNNE (EM03M0U)

2 Y 0 EFI (T) 38 IC4 3 F F 3E 3E Y Y H H J 7 J0 G 8 (CC) K 7. 5 CC 0 (T) IC4 0 DOME CC CUT elay 4 30 IC4 G J5 C C G J 6 D D J 7 J 8(), J 9() H 6 IC3 H F 3 3C Y Y 3 3C W W G IG+ CC IN GND W (UZ FE) Y D 3 Heater Control anel W W Y Y G G G G W J37 IK 359 4UNNE (EM03M0U)

3 ir Conditioning (T) 6(), 7() /C Control ssembly 0 ECU + IN 4 GND 5 8 VE IG OCK 9 MGC 0 TC 0 C 7 CT 8 W W W W (UZ FE) Y Y W G G W 4 4 W 3E 3E IM F F W J 8() IK IK G F J3(), J3() G G W W W D 4 D 5 D TCH C CT CC THWO THW 7 E 4 D 8 E E 4(), E 7(D), E 8(E) Engine Control Module W (UZ FE) (UZ FE) (G FE) Y Y E Engine Coolant Temp. Sensor G G G G 360 4UNNE (EM03M0U)

4 6(), 7() /C Control ssembly SW 9 H W TWI 3 7 S5 5 T SG 6 TD( ) T( ) 5 MCD( ) MC( ) 3 MHD( ) MH( ) 4 TM G G C C 3D 3D E H J3(), J3() C 3D D I J0(), J() V Y 9 /C oom Temp. Sensor O 3 3 V 4 5 M V W 5 4 ( ) ( ) ( ) ( ) 7() ir Mix Control Servo Motor H 6() ir Mix Control Servo Motor G G 39 IC4 5 IC3 /C mbient Temp. Sensor IM G G : imited : Except imited 4UNNE (EM03M0U) 36

5 ir Conditioning 6(), 7() /C Control ssembly TI I IF TO OD OF T MH MC ( ) ( ) G G G G W ( ) ( ) Y ( ) M M M ir Inlet Control ir Vent Mode ir Mix Control Servo Motor Control Servo Servo Motor H Motor UNNE (EM03M0U)

6 6(), 7() /C Control ssembly 4 TE TS 6 TSD( ) TS( ) DMOT DMIN SD V G ( ) G 8 /C Evaporator Temp. Sensor O 4 IG 6 IG O ( ) ( ) 5 3 ( ) ( ) ( ) ( ) IG /C Solar Sensor 5 6 V G IG ( ) ( ) IG 0 /C Solar Sensor W V 3D 3D V K G V V ( ) W 3 : imited : Except imited 363 4UNNE (EM03M0U)

7 ir Conditioning (IG) (IG) S8 Skid Control ECU with ctuator S 4 G 7. 5 GUGE J 0 IGN D 4 5 C 5 C C 3 C V W W 7 IM O O J 8(), J 9() 7 IC C 9(), C0(C) Combination Meter (UZ FE) (G FE) Speedometer Temp. G G ED EE 364 4UNNE (EM03M0U)

8 System Outline. Heater lower Operation Manual operation When the blower speed is set to a certain level using the blower control SW, the /C control assembly sends the signals to the blower control to control the blower motor speed. uto operation When the auto SW is pushed, the /C control assembly sends the signals from various sensors and temperature SW to the blower control to automatically control the blower motor speed.. ir Inlet Control Servo Motor Control When the FESH/ECIC select SW is set to ECIC, the motor in the air inlet control servo motor starts rotating to move the damper toward the ECIC side. Since the damper position is detected by the TEMIN TI of the /C control assembly, the motor is continuously rotated until the damper reaches its stop position. When the FESH/ECIC select SW is set to FESH, the motor in the air inlet control servo motor starts rotating to move the damper toward the FESH side. Since the damper position is detected by the TEMIN TI of the /C control assembly, the motor is continuously rotated until the damper reaches its stop position. 3. ir Vent Mode Control Servo Motor Control When the mode select SW is pushed, the ECU in the /C control assembly activates the air vent mode control servo motor. This causes the servo motor to rotate to the position (FCE, I EVE, FOOT, FOOT/DEF, DEF) selected using the mode select SW, and moves the damper. 4. ir Mix Control Servo Motor Control (imited) When the temperature control SW on the driver s side is pressed, the ECU in the /C control assembly sends a signal to the air mix control servo motor on the driver s side. This signal drives the motor to reach the temperature set by the temperature control SW on the driver s side, and moves the damper. assenger s side is operated as same as the driver s side. 5. ir Mix Control Servo Motor Control (Except imited) When the temperature control SW is pressed, the ECU in the /C control assembly sends a signal to the air mix control servo motor. This signal drives the motor to reach the temperature set by the temperature control SW, and moves the film damper. 6. ir Conditioning Operation The /C control assembly receives various signals, I.E., the engine M from the engine control module, out side air temperature signal from the /C ambient temp. sensor and coolant temperature from the engine control module, etc. When the engine is started and the /C SW (/C control assembly) is on, a signal is input to the /C control assembly. s a result, turning the MG CT relay on, so that the magnetic clutch is on and the /C compressor operates. If the /C control assembly detects the following conditions, it stops the air conditioning: Evaporator outlet air is too 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 is too low. apid acceleration occurs. : arts ocation Code See age Code See age Code See age 3 (UZ FE) 36 J (G FE) 3 36 J (UZ FE) C9 37 J (G FE) C0 C 37 J D3 37 J (UZ FE) J0 38 E (G FE) J E4 37 J E7 D 37 J E8 E 37 J J J J (UZ FE) J (G FE) 33 (UZ FE) 35 (G FE) 3 33 (UZ FE) 35 (G FE) S8 33 (UZ FE) 35 (G FE) 4UNNE (EM03M0U) 365

9 ir Conditioning : elay locks Code See age elay locks (elay lock ocation) Engine oom / (Engine Compartment eft) : lock and Wire Harness Code See age lock and Wire Harness ( ocation) E 4 Engine oom Main Wire and Driver Side J/ (ower Finish anel) G J K 5 Instrument anel Wire and Driver Side J/ (ower Finish anel) 3 3 3C 3D 8 Instrument anel Wire and Center J/ (Instrument anel race H) 3E : Joining Wire Harness and Wire Harness Code See age Joining Wire Harness and Wire Harness ( ocation) IC IC3 46 Instrument anel Wire and Engine oom Main Wire (eft Kick anel) IC4 IG 46 Instrument anel No. Wire and Instrument anel Wire (ehind the Combination Meter) IK 47 Instrument anel Wire and Instrument anel Wire (eft Upper Side of the Glove ox) IM IM 47 Engine Wire and Instrument anel Wire (ight Side of lower Unit) IN 47 Instrument anel Wire and Engine oom Main Wire (ight Kick anel) : Ground oints Code See age Ground oints ocation E 44 (UZ FE) 45 (G FE) Front eft Fender ED 44 (UZ FE) eft ank Cylinder Head EE 44 (UZ FE) ear Side of Cylinder lock 45 (G FE) ear Side of ight ank Cylinder lock II 46 Instrument anel race H IK 46 ight Kick anel 366 4UNNE (EM03M0U)

10 Memo 367 4UNNE (EM03M0U)