LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 1997 >> Corvette Automatic >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnosis & Repair >> DTC B2482: Back-Up Light Relay Circuit (Open Or Short To Ground) >> Testing

DTC B2482: Back-Up Light Relay Circuit (Open Or Short To Ground): Testing

  1. If BCM diagnostic system check was performed, go to next step. If BCM diagnostic system check was not performed, go to BCM DIAGNOSTIC SYSTEM CHECK  .
  2. Turn ignition off. Disconnect back-up light relay from underhood electrical center. Turn ignition on. Using a test light connected to ground, probe back-up light relay BATT terminals at underhood electrical center. See Figure . If test light illuminates, go to next step. If test light does not illuminate, go to step 14).
  3. Turn ignition off. Using a test light connected to battery, probe back-up light relay CKT 38 terminal at underhood electrical center. See Figure . If test light illuminates, go to step 11). If test light does not illuminate, go to next step.
  4. Using DVOM, check resistance between back-up light relay terminals No. 85 and 86. If resistance is 75-105 ohms, go to next step. If resistance is not 75-105 ohms, go to step 13).
  5. Check for continuity between back-up light relay terminals No. 85 and 87. If continuity exists, go to step 13). If continuity does not exist, go to next step.
  6. Check for continuity between back-up light relay terminals No. 85 and 30. If continuity exists, go to step 13). If continuity does not exist, go to next step.
  7. Turn ignition on. Using a test light connected to battery, probe back-up light relay CKT 38 terminal at underhood electrical center. See Figure . Using scan tool, command back-up light relay on and off. If test light toggles on and off as commanded, go to step 9). If test light does not toggle on and off as commanded, go to next step.
  8. Turn ignition off. Disconnect BCM connector C2. Using DVOM, check for continuity between BCM harness connector C2 terminal C1 (Dark Blue wire) and back-up light relay CKT 38 terminal at underhood electrical center. See Figure . If continuity exists, go to step 16). If continuity does not exist, go to step 15).
  9. Check for intermittent in back-up light circuit. See DIAGNOSTIC AIDS. If no problem is found, go to next step. If problem is found, repair as necessary. Go to step 17).
  10. Turn ignition off. Reinstall all components and connectors. Turn ignition on. Clear DTCs. Using scan tool, cycle back-up light relay. If DTC B2482 is current, go to step 16). If DTC B2482 is not current, system is operating properly.
  11. Ensure ignition is off. Disconnect BCM connector C2. Using a test light connected to battery, probe back-up light relay CKT 38 terminal at underhood electrical center. See Figure . If test light illuminates, go to next step. If test light does not illuminate, go to step 16).
  12. Repair short to ground in underhood electrical center or in circuit No. 38 (Dark Blue wire) between BCM and back-up light relay. Go to step 17).
  13. Replace back-up light relay. Go to step 17).
  14. Repair open in ignition feed circuit to underhood electrical center. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS. If a fuse is open, repair short in appropriate circuit. Go to step 17).
  15. Repair open in underhood electrical center or in circuit No. 38 (Dark Blue wire) between BCM and back-up light relay. Go to step 17).
  16. Replace BCM. See REMOVAL & INSTALLATION  . Reprogram BCM. See BCM PROGRAMMING/RPO CONFIGURATION  . Go to next step.
  17. Turn ignition off. Reinstall all components and connectors. Turn ignition on. Clear DTCs. Perform BCM DIAGNOSTIC SYSTEM CHECK  .
scientia non olet · About LEMON Manuals