Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).
2.CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.

BCM branch line circuit
M&A branch line circuitChecking engine coolant level
Check the coolant level in the reservoir when
the engine is cold. If the coolant level is below
the MIN level B , add coolant to the MAX level
A . If the reservoir is empty, check the coolant
level in the radiator when the engine is cold. If
there is insufficient coolant in the radiator, fi ...
Audio system
System Diagram
System Description
AUDIO SYSTEM
The audio system consists of the following components
AV control unit
Display unit
Window antenna
Steering wheel audio control switches
A/C and AV switch assembly
Front door speakers
Tweeters
Rear door speakers
Subwoofers
Whe ...
Steering switch
Description
When one of the steering wheel audio control switches is pushed, the
resistance in steering switch circuit changes depending on which button is
pushed.
Diagnosis Procedure
1.CHECK STEERING SWITCH RESISTANCE
Disconnect steering switch connector M88.
Check resistance betwe ...