Diagnosis Procedure

Check whether there is any factor which causes a temperature rise near BOSE amp.

Was there any factor?

YES 

GO TO STEP 2  .

NO 

Remove a factor.

With CONSULT

1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure again. Refer to DTC DESCRIPTION .

Is DTC U1231 detected again?

YES 

Replace BOSE amp. Refer to REMOVAL AND INSTALLATION .

NO 

INSPECTION END