Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 764

Inspection Procedure 2
Communication between MUT-II and the ABS-ECU is not
possible.
The cause may be an open circuit in the ABS-ECU power supply circuit or an open
circuit in the diagnosis output circuit.
Measure at the diagnosis connector C-22 and the ABS-ECU
connector B-123.
D Disconnect the connectors, and measure at the harness side
connectors.
D Continuity between the following terminals
ABS-ECU side - Diagnosis connector side
5 - 1
2 - 7
OK: Continuity
Measure at the ABS-ECU connector B-123.
D Disconnect the connector, and measure at the harness side
connector.
D Ignition switch: ON
D Voltage between 10 and body earth
OK: System voltage
Measure at the ABS-ECU connector B-123.
D Disconnect the connector, and measure at the harness side
connector.
D Continuity between 12 and body earth, and between 34 and
body earth
OK: Continuity
Check the following connector: B-123
OK
Check the trouble
symptom.
NG
Replace the hydraulic unit and ABS-ECU.
ABS <4WD> -
OK
OK
OK
NG
Repair
Troubleshooting
Probable cause
D Blown fuse
D Malfunction of wiring harness or connector
D Malfunction of hydraulic unit and ABS-ECU
NG
Check the following connectors:
B-123, C-22, C-26, C-28 <R.H. drive vehicles>, C-102 <L.H. drive
vehicles>, C-108, C-128 <R.H. drive vehicles>, C-130
OK
Check the trouble
symptom.
NG
Check the harness wire, and repair if necessary.
D Between ABS-ECU and diagnosis connector
NG
Check the following connectors: B-123, C-128 <R.H. drive
vehicles>, C-130 <L.H. drive vehicles>, C-209, C-210
OK
Check the trouble
symptom.
NG
Check the harness wire, and repair if necessary.
D Between ignition switch (IG2) and ABS-ECU
NG
Check the following connector: B-123
OK
Check the trouble
symptom.
NG
Check the harness wire, and repair if necessary.
D Between ABS-ECU and earth
35B-17
NG
Repair
NG
Repair
NG
Repair