A/C Auto AMP.

POWER SUPPLY AND GROUND CIRCUIT


A/C AUTO AMP.

A/C AUTO AMP. : Diagnosis Procedure

1.CHECK FUSE
Check 10A fuses [Nos. 2, 13 and 16, located in the fuse block (J/B)].

NOTE:
Diagrams.
Is the inspection result normal?
YES - GO TO 2.
NO - Replace the fuse after repairing the applicable circuit.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT-1
1. Turn the ignition switch OFF.
2. Disconnect the A/C auto amp. connector.
3. Check voltage between A/C auto amp. harness connector and the ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT-2
Check voltage A/C auto amp. harness connector and the ground.





Is inspection result normal?
YES - GO TO 4.
NO - GO TO 5.
4.CHECK A/C AUTO AMP. CIRCUIT CONTINUITY
1. Turn the ignition switch OFF.
2. Check continuity between A/C auto amp. harness connector and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Repair the harnesses or connectors.
5.CHECK BLOWER MOTOR RELAY POWER SUPPLY
1. Turn the ignition switch OFF.
2. Disconnect the blower motor relay from the fuse block (J/B). Diagrams.
3. Turn the ignition switch ON.
4. Check voltage between the ground and the connector on the fuse block side where blower motor relay was installed. Description and Operation.





Is inspection result normal?
YES - GO TO 6.
NO - Repair the power supply circuit. Battery Power Supply.
6.CHECK BLOWER MOTOR RELAY
Perform the blower motor component inspection. Component Inspection.
Is inspection result normal?
YES - Repair the harness or connector between blower motor relay and A/C auto amp.
NO - Replace blower motor relay.