Description
When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio control switch circuit changes, depending on which button is pushed.
Diagnosis Procedure
1.CHECK STEERING SWITCH RESISTANCE


2.CHECK HARNESS BETWEEN COMBINATION SWITCH (SPIRAL CABLE) AND AV CONTROL UNIT


3.COMBINATION SWITCH (SPIRAL CABLE) CHECK


Subwoofer
Communication signal circuitOn board diagnostic (OBD) system
Trouble Diagnosis Introduction
CAUTION:
Do not use electrical test equipment on any circuit related to
the SRS unless instructed to do so inthis Service Manual. SRS wiring
harnesses can be identified by yellow and/or orange harness connectors.
Do not attempt to repair, splice or modify ...
Power supply and ground circuit
Diagnosis Procedure
1. CHECK FUSE AND FUSIBLE LINK
Check if the following BCM fuses or fusible link are blown
2. CHECK POWER SUPPLY CIRCUIT
Turn ignition switch OFF.
Disconnect BCM.
Check voltage between BCM harness connector and ground.
3. CHECK GROUND CIRCUIT
Check continuit ...
Wiring diagram
COLOR DISPLAY
Wiring Diagram - Without BOSE Audio System Without Navigation System
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