Manual Air Conditioning

THERMO CONTROL AMPLIFIER

Component Function Check


1. CHECK A/C ON SIGNAL

With CONSULT
1.Turn ignition switch ON.
2.Select "AIR CONDITIONER" of "BCM" using CONSULT.
3.Select "THERMO AMP" in "DATA MONITOR" mode, and check status under the following condition.





Is the inspection result normal?
YES- INSPECTION END
NO- .


Diagnosis Procedure


1. CHECK FUSE

1.Turn ignition switch OFF.
2.Check 10A fuse (No. 15, located in fuse block (J/B)].
NOTE:
Fuse Block - Junction Box (J/B).
Is the inspection result normal?
YES- GO TO 2.
NO- Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2. CHECK THERMO CONTROL AMP. POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect thermo control amp. connector.
3.Turn ignition switch ON.
4.Check voltage between thermo control amp. harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair harness or connector between thermo control amp. and fuse.

3. CHECK THERMO CONTROL AMP. GROUND CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Check continuity between thermo control amp. harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair harness or connector.

4. CHECK THERMO CONTROL AMP. SIGNAL

1.Turn ignition switch ON.
2.Check voltage between thermo control amp. harness connector and ground.





Is the inspection result normal?
YES- Replace thermo control amp. Thermo Control Amplifier.
NO- GO TO 5.

5. CHECK THERMO CONTROL AMP. SIGNAL CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect BCM connector.
3.Check continuity between thermo control amp. harness connector and BCM harness connector.





Is the inspection result normal?
YES- Replace BCM. Service and Repair.
NO- Repair harness or connector.