DTC U3003:17 [AUDIO AMPLIFIER]
id0902f8848800
Without i-ELOOP
|
Description |
Audio amplifier high power supply voltage input |
|---|---|
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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.
• Are any DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
Go to the next step.
|
||
|
2
|
INSPECT BATTERY
• Inspect the battery.
(See BATTERY INSPECTION.)
• Is the battery normal?
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Yes
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Go to the next step.
|
|
No
|
Replace the battery, then go to Step 4.
(See BATTERY REMOVAL/INSTALLATION.)
|
||
|
3
|
INSPECT GENERATOR
• Inspect the generator.
• Is the generator normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the generator, then go to the next step.
|
||
|
4
|
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the audio amplifier using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 5 s or more.
• Retrieve the audio amplifier DTCs using the M-MDS.
• Is the same DTC displayed?
|
Yes
|
Replace the audio amplifier, then go to the next step.
|
|
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].)
|
|
No
|
DTC troubleshooting completed.
|
||
With i-ELOOP
|
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.
• DTCs are stored in the DC-DC converter (i-ELOOP).
• DC-DC converter (i-ELOOP) 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.
• Are any DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
Go to the next step.
|
||
|
2
|
VERIFY DC-DC CONVERTER (i-ELOOP) DTCs
• Retrieve the DC-DC converter (i-ELOOP) DTCs using the M-MDS.
(See DTC INSPECTION [i-ELOOP].)
• Are any DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [i-ELOOP].)
|
|
No
|
Go to the next step.
|
||
|
3
|
INSPECT DC-DC CONVERTER (i-ELOOP)
• Inspect the DC-DC converter (i-ELOOP).
• Is the DC-DC converter (i-ELOOP) normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the DC-DC converter (i-ELOOP), then go to the next step.
|
||
|
4
|
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the audio amplifier using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 5 s or more.
• Retrieve the audio amplifier DTCs using the M-MDS.
• Is the same DTC displayed?
|
Yes
|
Replace the audio amplifier, then go to the next step.
|
|
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].)
|
|
No
|
DTC troubleshooting completed.
|
||