Power Supply Circuit Inspection

AUDIO


Power Supply Circuit Inspection

1. CHECK FUSE
Check that the following fuses of the audio amplifier (premium system) and audio unit are not blown.










OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to Description and Operation.
2. AUDIO UNIT POWER SUPPLY CIRCUIT CHECK
1. Disconnect audio unit connector.
2. Check voltage between the audio unit and ground.










OK or NG
OK >> With premium system, GO TO 3.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
3. AUDIO AMPLIFIER (PREMIUM SYSTEM) POWER SUPPLY CIRCUIT CHECK
1. Disconnect audio amplifier connector.





2. Check voltage between audio amplifier and ground.





OK or NG
OK >> GO TO 4.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
4. GROUND CIRCUIT CHECK





Check continuity between audio amplifier harness connector B44 terminals 4, 20 and ground.

Continuity should exist.

OK or NG
OK >> Inspection End.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.