U1A05

U1A05 TCU

DTC Logic








Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Telematics System (Bose Audio w/o Surround Sound)
or "Wiring Diagram" Telematics System (Bose Audio with Surround Sound).

1. CHECK USB CIRCUITS CONTINUITY

1.Turn ignition switch OFF.
2.Disconnect TCU connector M134 and AV control unit connector M136.
3.Check continuity between TCU connector M134 and AV control unit connector M136.





4.Check the continuity between TCU connector M134 and ground.





Is the inspection result normal?
YES- Replace TCU. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace harness or connectors.
Revision: March 20122013 Infiniti JX