AC/Air Conditioning — Inspection Procedure, page 45

AC–45
AIR CONDITIONING SYSTEM – TROUBLESHOOTING

INSPECTION PROCEDURE

1  Actuator check.

Temperature
Set Dial

N06807

P  1. Warm up the engine.
   2. Set to the actuator check mode (See page AC–22)
   3. Turn the TSET dial and change it to step operation.

operation.

C  Turn the TSET dial and check the operation of the air mix damper and the condition of the blower.

OK
Set Temp.     Air Mix Damper          Condition
Below 20      0% (Fully closed)    Cool air comes out
20 ~ 23               50%
Over 23       100% (Fully opened)  Warm air comes out

NG

OK  Proceed to next circuit inspection shown on matrix chart (See page AC–26).

2  Check air mix damper control servo motor.

HOT
COOL

N08784
N08785

P  Remove air mix damper control servo motor assembly

C  Connect positive (+) lead to terminal 2 and negative (–) lead to terminal 1.

OK  The lever turns smoothly to Hot side.

C  Connect negative (–) lead to terminal 2 and positive (+) lead to terminal 1.

OK  The lever turns smoothly to Cool side.

OK

NG  Replace air mix damper control servo motor assembly.

3  Check harness and connector between A/C amplifier and air mix damper control servo motor assembly (See page IN–30).

OK

NG  Repair or replace harness or connector.

Check and replace A/C amplifier.