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Test No. 15: Door Ajar Warning Light Does Not Illuminate With Any Door Open

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn interior light switch to DOOR position. Open any door. If interior light illuminates, go to step  7 . If interior light does not illuminate, go to next step.
  2. Check ROOM (15-amp) fuse. If ROOM fuse is okay, go to next step. If ROOM fuse is blown, repair wiring and replace fuse. See WIRING DIAGRAMS  .
  3. Remove driver's front scuff plate. Remove driver's kick panel. Remove CPU from joint box. Measure voltage between ground and joint box terminal 1J. See Figure . If battery voltage exists, go to next step. If battery voltage does not exist, repair wiring between ROOM (15-amp) fuse and CPU.
  4. Check for continuity between ground and joint box terminal 1G. If continuity exists, go to next step. If continuity does not exist, repair wiring between CPU and ground.
  5. Open any door. Check for continuity between ground and joint box terminal 1I. If continuity exists, replace CPU. If continuity does not exist, go to next step.
  6. Remove door switch. Check for continuity between switch terminal and switch body. Continuity should exist when button is released. Continuity should not exist when button is pressed. If door switch is okay, repair wiring between CPU and door switch. If door switch is faulty, replace door switch.
  7. Remove instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Remove door ajar warning light bulb. Inspect bulb. If bulb is okay, go to next step. If bulb is bad, replace bulb.
  8. Remove driver's front scuff plate. Remove driver's kick panel. Remove CPU from joint box. Check for continuity between instrument cluster harness connector No. 1, terminal 1B, and joint box terminal 1H. See Figure and Figure . If continuity exists, replace printed circuit. See PRINTED CIRCUIT  under REMOVAL & INSTALLATION. If continuity does not exist, repair wiring between CPU and instrument cluster. See WIRING DIAGRAMS  .
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