Diagnosis Procedure

1. Delete the "self - diagnosis" results of "MULTI AV". Turn ignition switch OFF.
2. Turn ignition switch ON. perform the self - diagnosis again.
3. Check that the DTC is detected again.

Is any DTC detected?

YES-1 

U1684 or U1687: Check harnesses between BOSE amp. and rear door speaker LH or between BOSE amp. and rear door tweeter LH.

YES-2 

U168C or U168F: Check harnesses between BOSE amp. and rear door speaker RH and between BOSE amp. and rear door tweeter RH.

NO 

Refer to INTERMITTENT INCIDENT .