NO.7 ALC FUNCTION IS INOPERATIVE [ENTIRE AUDIO SYSTEM]
id0903e2803600
7 |
ALC function is inoperative |
|
---|---|---|
Possible DTC |
With M-MDS |
U0010:88, U0155:00 |
Without M-MDS |
Audio unit
• 16:Er12
Car-navigation unit
• Device code 16/Error code 12
• Device code 17/Error code 11
|
|
POSSIBLECAUSE
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• Audio unit/car-navigation unit malfunction
• CAN signal wiring harness malfunction (does not receive vehicle speed signal) (with audio system
• Open or short circuit in vehicle speed signal wiring harness (e. g., instrument cluster) (with car-navigation system)
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Diagnostic procedure
STEP |
INSPECTION |
ACTION |
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---|---|---|---|
1
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• Turn the ALC function to ON.
• Inspect the ALC function operation when driving the vehicle at ALC level 3.
• Does the ALC system operate properly?
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Yes
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The system is normal. Explains the ALC function to the customer.
|
No
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Go to the next step.
|
||
2
|
• Verify that the speedometer indication.
• Is there the following DTC displayed?
|
Yes
|
Go to the next step (with audio system).
Go to Step 4 (with car-navigation system).
|
No
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Perform the instrument cluster symptom troubleshooting procedure.
|
||
3
|
• Retrieve the DTCs from all vehicle modules using the M-MDS.
• Is there the CAN related DTC displayed?
|
Yes
|
Go to the appropriate DTC inspection.
|
No
|
Replace the audio unit.
|
||
4
|
• Inspect for open or short circuit in wiring between the car-navigation unit (24-pin) terminal 1I and instrument cluster terminal 2O.
• Is the open or short circuit detected?
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Yes
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Repair or replace for open or short circuit.
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No
|
Replace the car-navigation unit.
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