Mitsubishi Lancer Evolution VI - Page 435

FULL-AUTOMATIC AIR CONDITIONER – Troubleshooting
55-52
Inspection procedure 15
A/C-ECU power supply circuit check
NG
Repair
OK
Check the trouble symptom.
NG
Check the harness between the A/C-ECU and the fusible link
No.1, and repair if necessary.
OK
Check the trouble symptom.
NG
Check the harness between the A/C-ECU and the junction block,
and repair if necessary.
OK
Check the following connector:
B-05
NG
Repair
OK
Check the trouble symptom.
NG
Replace the A/C-ECU.
NG
Repair
OK
Check the trouble symptom.
NG
Check the harness between the A/C-ECU and the body earth,
and repair if necessary.
NG
Repair
OK
Measure at the A/C-ECU connector B-05.
D Disconnect the connector, and measure at the harness
side connector.
D Continuity between terminal (29) and body earth
OK: Continuity
D Continuity between terminal (35) and body earth
OK: Continuity
NG
Check the following connectors:
B-05, B-48, B-19, B-69, B-80
OK
Measure at the A/C-ECU connector B-05.
D Disconnect the connector, and measure at the harness
side connector.
D Voltage between terminal (28) and body earth (Ignition
switch: ON)
OK: System voltage
NG
Check the following connectors:
B-49, B-75, B-76
Measure at the A/C-ECU connector B-04.
D Disconnect the connector, and measure at the harness
side connector.
D Voltage between terminal (3) and body earth
OK: System voltage
NG
Check the following connectors:
B-49, B-75, B-73