Description

Audio amplifier high power supply voltage input

Detection condition

Larger value than audio amplifier power supply circuit voltage of 16 V is detected with ignition switched ON (engine off or on)

Fail-safe function

Not applicable

Possible cause

• Battery malfunction

• Generator malfunction

• Audio amplifier malfunction

System wiring diagram

Not applicable

Step

Inspection

Action

1

• Perform the DTC inspection for the PCM using the M-MDS.

  (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].)

• Is the DTC displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

Go to the next step.

2

• Inspect the battery.

  (See BATTERY INSPECTION [SKYACTIV-G 2.5].)

• Is there any malfunctioning part?

Yes

Recharge or replace the battery, then go to Step 4.

(See BATTERY RECHARGING [SKYACTIV-G 2.5].)

(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

No

Go to the next step.

3

• Inspect the generator.

  (See GENERATOR INSPECTION [i-ELOOP].)

  (See GENERATOR INSPECTION [SKYACTIV-G 2.5 (WITHOUT i-ELOOP)].)

• Is there any malfunctioning part?

Yes

Replace the generator, then go to the next step.

(See GENERATOR REMOVAL/INSTALLATION [i-ELOOP].)

(See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (WITHOUT i-ELOOP)].)

No

Go to the next step.

4

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

• Switch the ignition off (LOCK).

• Reconnect all the disconnected connectors.

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Clear the audio unit DTCs.

  (See CLEARING DTC [AUDIO AMPLIFIER].)

• Perform the audio unit DTC inspection.

  (See DTC INSPECTION [AUDIO AMPLIFIER].)

• Is the same DTC displayed?

Yes

Return to Step 1 and inspect for other possible causes.

If the malfunction recurs, replace the audio amplifier, then go to the next step.

(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)

No

Go to the next step.

5

VERIFY IF OTHER DTCs DISPLAYED

• Verify if other DTCs are displayed.

• Are any other DTCs displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [AUDIO AMPLIFIER].)

No

DTC troubleshooting completed.