Valve Relay Circuit
- Remove and test valve relay. See HYDRAULIC UNIT RELAYS
. Replace relay if faulty. If relay is okay, reinstall valve relay and go to next step.
- Check pump motor, and repair if necessary. Turn ignition on. Disconnect hydraulic unit 2-pin connector. Measure voltage between terminal No. 52 and vehicle ground. See Fig 1
.
- If battery voltage is not present, repair wiring harness between fusible link and hydraulic unit 2-pin connector. If battery voltage is present, turn ignition off. Using ohmmeter, check for continuity between hydraulic unit 10-pin connector terminals No. 7 and 8. See Figure
. If continuity exists, go to next step. If continuity does not exist, repair or replace hydraulic unit.
- Connect hydraulic unit connector. Disconnect ECU connector. Using ohmmeter, measure resistance between ECU connector terminals No. 4 and 5. See Figure
. Resistance should be 60-120 ohms. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness between hydraulic unit and ECU.
- Turn ignition on. Measure voltage between ECU connector terminal No. 62 and vehicle ground. If battery voltage is not present, repair or replace faulty wiring harness between hydraulic unit and ECU. If battery voltage is present, replace faulty ECU.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA