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Test F: Automatic Dimming Function Inoperative

  1. Place transmission in Park. Turn ignition switch to RUN position. Cover light sensor on back side of inside mirror. Shine bright light into front of inside mirror. If inside mirror does not darken, go to next step. If inside mirror darkens and driver's mirror does not darken, go to step  7 . If both mirrors darken, system is operating properly at this time.
  2. Turn ignition switch to LOCK position. Disconnect inside mirror harness connector C902. Turn ignition switch to RUN position. Measure voltage at terminal No. 7 (Dark Blue/Light Green wire) at inside mirror harness connector C902. If battery voltage exists, go to step  5 . If battery voltage does not exist, go to next step.
  3. Turn ignition switch to LOCK position. Remove fuse No. 18 (7.5-amp) from instrument panel fuse box. If fuse is okay, repair open in Dark Blue/Light Green wire between fuse No. 7 and inside mirror. If fuse is blown, go to next step.
  4. Ensure fuse No. 18 is still removed. Measure resistance between ground and terminal No. 7 (Dark Blue/Light Green wire) at inside mirror harness connector C902. If resistance is 10 k/ohms or less, repair short to ground in Dark Blue/Light Green wire between fuse No. 7 and inside mirror. If resistance is greater than 10 k/ohms, replace inside mirror.
  5. Measure resistance between ground and terminal No. 6 (Black wire) at inside mirror harness connector C902. If resistance is greater than 5 ohms, repair open in Black wire between ground and inside mirror. If resistance is 5 ohms or less, go to next step.
  6. Turn ignition switch to RUN position. Place transmission in Reverse. Measure voltage at terminal No. 5 (Black/Pink wire) at inside mirror harness connector C902. If battery voltage exists, replace inside mirror. If battery voltage does not exist, repair open in Black/Pink wire between digital transmission range sensor and inside mirror.
  7. Turn ignition switch to LOCK position. Disconnect inside mirror harness connector C902. Connecting a D-size battery (1.5 volts or less), positive to terminal No. 4 (Violet wire) and negative to terminal No. 3 (Light Blue/White wire) at inside mirror harness connector C902. If driver's mirror darkens, replace inside mirror. If driver's mirror does not darken, go to next step.
  8. Turn ignition switch to LOCK position. Disconnect driver's mirror harness connector C508. Connect inside mirror harness connector C902. Measure voltage at terminal No. 9 (Light Blue/White wire) at driver's mirror harness connector C508. If any voltage exists, go to next step. If no voltage exists, go to step  10 .
  9. Disconnect inside mirror harness connector C902. Measure voltage at terminal No. 9 (Light Blue/White wire) at driver's mirror harness connector C508. If any voltage exists, repair short to voltage in Light Blue/White wire between inside mirror and driver's mirror. If no voltage exists, replace inside mirror.
  10. Measure voltage at terminal No. 10 (Violet wire) at driver's mirror harness connector C508. If any voltage exists, go to next step. If no voltage exists, go to step  12 .
  11. Disconnect inside mirror harness connector C902. Measure voltage at terminal No. 10 (Violet wire) at driver's mirror harness connector C508. If any voltage exists, repair short to voltage in Violet wire between inside mirror and driver's mirror. If no voltage exists, replace inside mirror.
  12. Measure resistance between ground and terminal No. 9 (Light Blue/White wire) at driver's mirror harness connector C508. If resistance is 10 k/ohms or less, go to next step. If resistance is greater than 10 k/ohms, go to step  14 .
  13. Disconnect inside mirror harness connector C902. Measure resistance between ground and terminal No. 9 (Light Blue/White wire) at driver's mirror harness connector C508. If resistance is 10 k/ohms or less, repair short to ground in Light Blue/White wire between inside mirror and driver's mirror. If resistance is greater than 10 k/ohms, replace inside mirror.
  14. Measure resistance between ground and terminal No. 10 (Violet wire) at driver's mirror harness connector C508. If resistance is 10 k/ohms or less, go to next step. If resistance is greater than 10 k/ohms, go to step  16 .
  15. Disconnect inside mirror harness connector C902. Measure resistance between ground and terminal No. 10 (Violet wire) at driver's mirror harness connector C508. If resistance is 10 k/ohms or less, repair short to ground in Violet wire between inside mirror and driver's mirror. If resistance is greater than 10 k/ohms, replace inside mirror.
  16. Disconnect inside mirror harness connector C902. Measure resistance in Light Blue/White wire between terminal No. 3 at inside mirror harness connector C902 and terminal No. 9 at driver's mirror harness connector C508. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Light Blue/White wire between inside mirror and driver's mirror.
  17. Measure resistance in Violet wire between terminal No. 4 at inside mirror harness connector C902 and terminal No. 10 at driver's mirror harness connector C508. If resistance is 5 ohms or less, replace driver's mirror. If resistance is greater than 5 ohms, repair open in Violet wire between inside mirror and driver's mirror.
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