DTC Diagnosis Procedure

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

Was there any factor?

YES

GO TO 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 BOSE AMP. : Removal & Installation .

NO

INSPECTION END