Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 767

35B-20
Inspection Procedure 6
The neutral position learning of the steering wheel sensor
is not finished.
The diagnosis is difficult because it depends on driving condition and road surface,
if the diagnosis code displays the normal code, carry out the following check.
Is the odd diameter tire equipped?
Is the suspension abnormal?
When the steering wheel position is neutral, does the steering wheel
sensor (ST-N) turn ON in the MUT-II service data?
Does the stop lamp turn on and off normally?
Measure at the ABS-ECU connector B-123.
D Disconnect the connector, and measure at the harness side
connector.
D Stop lamp switch: ON
D Voltage between 19 and body earth
OK: System voltage
OK
Check the following
connector: B-123
OK
NG
Repair
Check the trouble
symptom.
NG
Replacethe hydraulic unit
and ABS-ECU.
ABS <4WD> -
NO
NO
YES
YES
NG
Check the following
connectors:
C-108, C-130
OK NG
Repair
Check the trouble
symptom.
NG
Check the harness wire,
and repair if necessary.
D Between stop lamp
switch and ABS-ECU
Troubleshooting
Probable cause
D Equipment the odd diameter tyre
D Malfunction of suspension
D Malfunction of steering wheel sensor installation
D Malfunction of stop lamp switch system
D Malfunction of hydraulic unit and ABS-ECU
YES
Repair
YES
Repair
NO
Check the steering wheel sensor and the steering wheel installation
condition.
NO
Check the stop lamp switch installation condition.
(Refer to GROUP 35A - On-vehicle Service.)
OK
Check the stop lamp switch. (Refer to GROUP 35A - Brake Pedal.)
OK
Check the following connectors: B-123, C-103, C-108, C-130,
C-135
OK
Check the trouble
symptom.
NG
Check the harness wire, and repair if necessary.
D Between battery and stop lamp switch
D Between stop lamp switch and ABS-ECU
NG
Repair
NG
Replace
NG
Repair