2003 LEXUS LS430 damper

INSPECTION
1.INSPECT REAR BLOWER MOTOR CIRCUIT (See REAR BLOWER MOTOR CIRCUIT
)
2.EXHAUST DAMPER CONTROL SERVOMOTOR CIRCUIT (See EXHAUST DAMPER
CONTROL SERVOMOTOR CIRCUIT )
3.INSPECT REAR MAGNETIC VALVE CIRCUIT (See REAR MAGNETIC VALVE CIRCUIT
)
4.INSPECT SMOKE SENSOR CIRCUIT (See SMOKE SENSOR CIRCUIT
)
5.INSPECT EVAPORATOR SUB-ASSY (REAR)
a. Check the evaporator sub-assy (rear) fins for blockage.
If the fins are clogged, clean them with compressed air.
b. Check the fitting for cracks or scratches.
If necessary, repair or replace.
6.INSPECT COOLING BOX LAMP SUB-ASSY
a. Connect positive (+) lead to terminal 1 and negative (-) lead to terminal 2.
b. Check that the cooling box lamp sub-assy comes on.
If coolin
g box light does not come on, replace the cooling box lamp sub-assy.

Fig. 125: Removing Blower Resistor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
33.REMOVE EXHAUST DAMPER SERVOMOTOR
a. Remove the 3 screws and exhaust damper servomotor.

Fig. 126: Removing Exhaust Damper Servomotor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
34.REMOVE EVAPORATOR SUB-ASSY (REAR)
a. Remove the 4 screws and cooler cover plate.
b. Remove the evaporator sub-assy (rear).