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Home >> Mercury >> 1992 >> Cougar LS, 5.0 T >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry Systems >> System Testing >> Pinpoint Test G >> Trunk Unlock

Trunk Unlock

  1. Turn ignition on. Press trunk release switch in glove box. If trunk unlocks, go to next step. If trunk does not unlock, go to step  3 . If trunk is always unlocked, go to step  5 .
  2. Disconnect control module connector C418. See Figure . Check for continuity between terminal No. 7 of connector C418 and trunk release solenoid. If continuity exists, replace control module. Repeat Quick Test  . If no continuity exists, repair Purple/Yellow wire. Repeat Quick Test  .
  3. Check trunk release solenoid. If solenoid is okay, go to next step. If solenoid is not operational, replace solenoid. Repeat Quick Test  .
  4. Check 20 amp circuit breaker P/W. See WIRING DIAGRAMS  . Replace circuit breaker, if necessary. If circuit breaker is okay, repair open or short in Purple/Yellow wire. Repeat Quick Test  .
  5. Disconnect module connector C418. If trunk locks, replace control module. Repeat Quick Test  . If trunk does not lock, go to next step.
  6. Disconnect trunk release switch in glove box. Disconnect control module connector. If trunk locks, replace trunk release switch. Repeat Quick Test  . If trunk does not lock, repair short in Purple/Yellow wire. Repeat Quick Test  .
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