2

No power to the entire audio system / Possible DTC: 09:Er20

Troubleshooting hints

• Poor connection of audio unit connector, terminal damage

• Audio unit malfunction

• Burnt fuse (B+)

• Burnt fuse (ACC)

• Open or short circuit in power supply (B+) wiring harness

• Open or short circuit in power supply (ACC) wiring harness

STEP

INSPECTION

ACTION

1

• Turn the ignition switch to the LOCK position.

• Inspect the following fuses:

• ACC

• ROOM

• Are the fuses normal?

Yes

Go to the next step.

No

Replace with the appropriate standard fuse.

• If the fuse is melted, inspect the wiring harness for a short to ground. Repair or replace the wiring harness, then replace the fuse.

2

• Remove the audio unit.

• Inspect the connection of the audio unit connector (24-pin).

• Disconnect the audio unit connector and inspect both the audio unit and the wiring harness-side connectors for a 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 audio unit connector has a poor connection:

• Securely connect the audio unit connector.

If the audio unit side connector is malfunctioning:

• Replace the audio unit.

  (See CENTER PANEL UNIT REMOVAL/INSTALLATION.)

  (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.)

  (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)

If the wiring harness-side connector is malfunctioning:

• 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:

• Ignition switch ON: 11.5 V or more

• Idle: 12.5 V or more

• Is the voltage normal?

Yes

Go to the next step.

No

Repair or replace the related wiring harnesses.

4

• Turn the ignition switch to the LOCK position.

• Remove the audio unit connector (24-pin).

• Inspect the continuity between audio unit wiring harness-side connector terminal 1W and the ground.

• Is there continuity?

Yes

Replace the audio unit.

(See CENTER PANEL UNIT REMOVAL/INSTALLATION.)

(See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.)

(See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)

No

Repair or replace the wiring harness.