DTC U3003:17 [AUDIO AMPLIFIER (TYPE-A)]

id1602b0012100

Description

Audio amplifier high power supply voltage input

Detection condition

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

Fail-safe

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 exceeding 16.0 ± 0.8 V is detected for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe	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. (Refer to the [ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G)]] in the workshop manual) (Refer to the [ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D)]] in the workshop manual) • Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (Refer to the [DTC TABLE [PCM (SKYACTIV-G)]] in the workshop manual) (Refer to the [DTC TABLE [PCM (SKYACTIV-D)]] in the workshop manual)
1		No	Go to the next step.
2	INSPECT BATTERY • Inspect the battery. (Refer to the [BATTERY INSPECTION] in the workshop manual) • Is the battery normal?	Yes	Go to the next step.
2		No	Replace the battery, then go to Step 4. (Refer to the [BATTERY REMOVAL/INSTALLATION] in the workshop manual)
3	INSPECT GENERATOR • Inspect the generator. (Refer to the [GENERATOR INSPECTION] in the workshop manual) • Is the generator normal?	Yes	Go to the next step.
3		No	Replace the generator, then go to the next step. (Refer to the [GENERATOR REMOVAL/INSTALLATION] in the workshop manual)
4	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear the DTC for the audio amplifier using the M-MDS. (See CLEARING DTC [AUDIO AMPLIFIER (TYPE-A)].) • Retrieve the audio amplifier DTCs using the M-MDS. (See DTC INSPECTION [AUDIO AMPLIFIER (TYPE-A)].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the audio amplifier. (Refer to the [AUDIO AMPLIFIER REMOVAL/INSTALLATION] in the workshop manual)
4		No	Go to the next step.
5	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO AMPLIFIER (TYPE-A)].)
5		No	DTC troubleshooting completed.