| 1 |
- Switch the ignition OFF (LOCK).
- Inspect the following fuse:
- Are the fuse normal?
|
Yes |
Go to the next step. |
| No |
Replace with the appropriate standard fuse.
- If the fuse is blown, inspect the wiring harness for short to ground. Repair or replace the wiring harness, then replace the fuse.
|
| 2 |
- Remove the audio unit (with audio system).
- Inspect the connection of the audio unit connector (24-pin).
- Disconnect the audio unit connector and inspect both the audio unit and wiring harness-side connectors for poor connection (such as damaged/pulled-out pins, corrosion).
- Terminal 1B (B+)
- Terminal 1R (ACC)
- Terminal 1W (GND)
- Are all the pins normal?
|
Yes |
Go to the next step. |
| No |
If poor connection of audio unit connector:
- Securely connect the audio unit connector.
If the audio unit side connector is wrong:
- Replace the audio unit.
(See AUDIO UNIT REMOVAL/INSTALLATION
.)
If the wiring harness-side connector is wrong:
- Repair or replace the pins and/or the connector.
|
| 3 |
- Connect the audio unit connector.
- Inspect the voltage for the power supply line (B+, ACC).
Specification:
- Switch the ignition ON: 11.5 V or more
- Idle: 12.5 V or more
- Is the voltage normal?
|
Yes |
Go to the next step. |
| No |
Inspect and repair or replace the suspect wiring harness.
Charge the battery, if necessary. |
| 4 |
- Switch the ignition OFF (LOCK).
- Remove the audio unit connector (24-pin).
- Inspect the continuity between the audio unit wiring harness-side connector terminal 1W (GND) and the ground.
- Is there the continuity?
|
Yes |
Replace the audio unit.
(See AUDIO UNIT REMOVAL/INSTALLATION
.) |
| No |
Repair or replace the wiring harness. |