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Home >> Mitsubishi >> 1997 >> Diamante LS >> Repair and Diagnosis >> Body & Frame >> Power Windows >> Circuit Testing >> Test No. 1

Test No. 1

  1. Check power window relay. See COMPONENT TESTS  . Replace as necessary. If relay is okay, check voltage between ground and power window relay connector terminals No. 1 and 5. See WIRING DIAGRAMS  . If battery voltage is present, go to next step. If battery voltage is not present, go to step 4).
  2. Disconnect assist-ECU harness connector B-53. SeeFig 1 . Turn ignition on. Check voltage between ground and assist-ECU harness-side connector B-53 terminal No. 51. If battery voltage is present, go to next step. If battery voltage is not present, go to step 5).
  3. Check connectors to power window relay, left side of dash-to-front door harness, and front door module. Repair as necessary. If connectors are okay, check circuit between power window relay, assist-ECU and between power window relay and front door module. See WIRING DIAGRAMS  . Repair is necessary. If circuits are okay, replace assist-ECU.
  4. Check connector to power window relay. Repair as necessary. If connector is okay, check circuit between power supply and power window relay. See WIRING DIAGRAMS  . Repair if necessary. If circuits are okay, go to next step.
  5. Check connector to passenger compartment fuse/relay block and assist-ECU. Repair if necessary. If connectors are okay, check and repair circuit between fuse and assist-ECU. See WIRING DIAGRAMS  .
Fig 1: Assist-ECU Harness Connector Terminals B-53 Assist-ECU
G97G11839Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 2: Assist-ECU Harness Connector Terminals B-54 Assist-ECU
G97J11840Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.