DTC U3003:17 [AUDIO AMPLIFIER]

id0902f8848800

Description

Audio amplifier high power supply voltage input

Detection condition

•  Audio amplifier power supply circuit voltage of 16.0 ± 0.8 V or more is detected for 5 s or more with the ignition switched to ACC or ON (engine off or on).

Fail-safe function

Not applicable

Possible cause

•  DTCs are stored in the PCM.

•  Battery malfunction

•  Generator malfunction

•  Audio amplifier malfunction

System wiring diagram

Not applicable

Description	Audio amplifier high power supply voltage input
Detection condition	• Audio amplifier power supply circuit voltage of 16.0 ± 0.8 V or more is detected for 5 s or more with the ignition switched to ACC or ON (engine off or on).
Fail-safe function	Not applicable
Possible cause	• DTCs are stored in the PCM. • Battery malfunction • Generator malfunction • Audio amplifier malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY PCM DTCs

•  Retrieve the PCM DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5)].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

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

(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)

No

Go to the next step.

2

INSPECT BATTERY

•  Inspect the battery.
(See BATTERY INSPECTION.)

•  Is the battery normal?

Yes

Go to the next step.

No

Replace the battery, then go to Step 4.

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

(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

3

INSPECT GENERATOR

•  Inspect the generator.
(See GENERATOR INSPECTION [SKYACTIV-G 2.5].)

(See GENERATOR INSPECTION [SKYACTIV-D 2.2].)

•  Is the generator normal?

Yes

Go to the next step.

No

Replace the generator, then go to the next step.

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

(See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

4

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Clear the DTC for the audio amplifier using the M-MDS.
(See CLEARING DTC [AUDIO AMPLIFIER].)

•  Switch the ignition ON (engine off or on) and wait for 5 s or more.

•  Retrieve the audio amplifier DTCs using the M-MDS.
(See DTC INSPECTION [AUDIO AMPLIFIER].)

•  Is the same Pending DTC present?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the audio amplifier.
(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

5

VERIFY IF OTHER DTCs 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.

Step	Inspection		Action
1	VERIFY PCM DTCs • Retrieve the PCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Are any DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-G 2.5)].) (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
1		No	Go to the next step.
2	INSPECT BATTERY • Inspect the battery. (See BATTERY INSPECTION.) • Is the battery normal?	Yes	Go to the next step.
2		No	Replace the battery, then go to Step 4. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
3	INSPECT GENERATOR • Inspect the generator. (See GENERATOR INSPECTION [SKYACTIV-G 2.5].) (See GENERATOR INSPECTION [SKYACTIV-D 2.2].) • Is the generator normal?	Yes	Go to the next step.
3		No	Replace the generator, then go to the next step. (See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].) (See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
4	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear the DTC for the audio amplifier using the M-MDS. (See CLEARING DTC [AUDIO AMPLIFIER].) • Switch the ignition ON (engine off or on) and wait for 5 s or more. • Retrieve the audio amplifier DTCs using the M-MDS. (See DTC INSPECTION [AUDIO AMPLIFIER].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.) Go to the next step.
4		No	Go to the next step.
5	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO AMPLIFIER].)
5		No	DTC troubleshooting completed.