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Home >> Mitsubishi >> 1997 >> Eclipse Base, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Heated Glass/Defoggers >> Defogger - Rear Window >> System Testing >> Defogger Relay Circuit System Check
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Defogger Relay Circuit System Check

  1. Perform DEFOGGER RELAY TEST  under COMPONENT TESTS. Replace as necessary. If relay is okay, go to next step.
  2. Check voltage between ground and relay harness-side connector terminals No. 3 and 5. See WIRING DIAGRAMS  . If battery voltage is present, go to next step. If battery voltage is not present, go to step 4).
  3. Check harness connectors to relay, ETACS-ECU, junction block and rear wiring/liftgate. See WIRING DIAGRAMS  . Repair as necessary. If connectors are okay, check circuit between defogger relay and rear defogger; defogger and ground, or defogger relay and ECU. See WIRING DIAGRAMS  . Repair as necessary. If circuit is okay, replace ECU.
  4. Check harness connectors to junction block and ignition switch. Repair as necessary. If connectors are okay, check circuit between ignition switch and junction block; between fusible link No. 2 and junction block. See WIRING DIAGRAMS  . Repair as necessary.
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