Power Supply And Ground Circuit

POWER SUPPLY AND GROUND CIRCUIT

A/C AUTO AMP. : Diagnosis Procedure


1. CHECK SYMPTOM

Check symptom (A or B).





Which symptom is detected?
A- GO TO 2.
B- GO TO 4.

2. CHECK FUSE

1.Turn power switch OFF.
2.Check 10A fuse [No. 3, located in fuse block (J/B)].
NOTE:
Refer to "Fuse, Connector and Terminal Arrangement" Fuse Block - Junction Box (J/B).
Is the inspection result normal?
YES- GO TO 3.
NO- Replace the blown fuse after repairing the affected circuit if a fuse is blown.

3. CHECK A/C AUTO AMP. POWER SWITCH POWER SUPPLY

1.Disconnect A/C auto amp. connector.
2.Turn power switch ON.
3.Check voltage between A/C auto amp. harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair harness or connector between A/C auto amp. and fuse.

4. CHECK FUSE

1.Turn power switch OFF.
2.Check 10A fuse [No.13, located in fuse block (J/B)].
NOTE:
Refer to "Fuse, Connector and Terminal Arrangement" Fuse Block - Junction Box (J/B).
Is the inspection result normal?
YES- GO TO 5.
NO- Replace the blown fuse after repairing the affected circuit if a fuse is blown.

5. CHECK A/C AUTO AMP. BATTERY POWER SUPPLY

1.Disconnect A/C auto amp. connector.
2.Check voltage between A/C auto amp. harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair harness or connector between A/C auto amp. and fuse.

6. CHECK A/C AUTO AMP. GROUND CIRCUIT FOR OPEN

1.Turn power switch OFF.
2.Check continuity between A/C auto amp. harness connector and ground.





Is the inspection result normal?
YES- Replace A/C control (A/C auto amp.). Refer to "Removal and Installation" Service and Repair.
NO- Repair harness or connector.