Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
Harness connector M1
Harness connector E30
2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Disconnect the following harness connectors.
A/C auto amp.
Harness connectors M1 and E30
Check the continuity between the A/C auto amp. harness connector and the harness connector.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Disconnect the connector of ABS actuator and electric unit (control unit).
Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector.

Main line between HVAC and A-bag circuit
ECM branch line circuitInstrument Panel
Vent
Headlight/fog light/turn signal switch
Supplemental front-impact air bag. Horn
Meters and gauges. Warning and indicator lights. Vehicle information
display
Paddle shifters (if so equipped)
Wiper and washer switch
Audio controls*. Navigation controls*
Hazard warning flash ...
Stop lamp
Wiring Diagram
...
Diagnosis system [ABS actuator and electric unit (control unit)]
CONSULT Function (ABS)
FUNCTION
CONSULT can display each diagnostic item using the following diagnostic test
modes.
Diagnostic test mode
Function
ECU Identification
ABS actuator and electric unit (control unit) part number can be
read
Self Diagnostic R ...