id0903e2803600
| 7 |
ALC function is inoperative |
|
|---|---|---|
| Possible DTC |
Using the M-MDS |
U0010:88, U0155:00 |
| Without using M-MDS (On-board diagnostic test mode) |
16:Er12, 17:Er11 |
|
|
Possible cause
|
• CAN signal wiring harness malfunction (does not receive vehicle speed signal)
• Audio unit malfunction
|
|
Diagnostic procedure
| STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
• 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?
|
Yes
|
The system is normal. Explains the ALC function to the customer.
|
|
No
|
Go to the next step.
|
||
|
2
|
• Retrieve the DTCs from all vehicle modules using the M-MDS.
• Is there the following DTC displayed?
|
Yes
|
Go to the appropriate DTC inspection.
|
|
No
|
Replace the audio unit.
|
||