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O-6: Back-Up Light Switch Circuit Check (M/T)

  1. Disconnect back-up light switch 2-pin connector. Remove back-up light switch from transmission. Check continuity between back-up light switch connector terminals (component side). When back-up light switch is pressed, continuity should exist. When back-up light switch is released, continuity should not exist. If continuity is as specified, go to next step. If continuity is not as specified, replace back-up light switch and retest system.
  2. Measure voltage between ground and back-up light switch connector terminal No. 1 (Black/Orange wire). If battery voltage exists, go to step  4 . If battery voltage does not exist, go to next step.
  3. Check back-up light switch connector for loose, damaged or corroded terminals. Check for open or short in Black/Orange wire between back-up light switch connector terminal No. 1 and junction block. Check for open in Green wire between junction block 6-pin connector C-101 terminal No. 6 and ignition switch. Repair connector or appropriate wire as necessary and retest system.
  4. Check back-up light switch connector and ETACS-ECU 16-pin connector C-111 for loose, damaged or corroded terminals. Check for open or in Red/Blue wire between back-up light switch connector terminal No. 2 and ETACS-ECU connector C-111 terminal No. 44. If problem exists, repair connector or Red/Blue wire as necessary and retest system. If problem does not exist, replace ETACS-ECU and retest system.
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