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Test G - No Module/Network Communication

  1. Inspect NGS tester connector for loose, damaged or corroded terminals. Repair as necessary and retest system for normal operation. If connector is okay, go to next step.
  2. Turn ignition switch to LOCK position. Inspect Data Link Connector (DLC) for physical damage, bent terminals or corrosion. Repair as necessary and retest system for normal operation. If connector is okay, go to next step.
  3. Turn ignition switch to LOCK position. Remove and inspect fuse No. 5 (10-amp) from instrument panel fuse box. If fuse is blown, go to next step. If fuse is okay, reinstall fuse and go to step 5).
  4. Replace fuse and retest system for normal operation. Recheck fuse. If fuse is okay, go to next step. If fuse is blown, repair short to ground in Orange wire between instrument panel fuse box and DLC. Retest system for normal operation.
  5. Measure voltage between ground and terminal No. 16 (Orange wire) at DLC. See Figure. If voltage is greater than 10 volts, go to next step. If voltage is 10 volts or less, repair open in Orange wire between instrument panel fuse block and DLC. Retest system for normal operation.
  6. Measure resistance between ground and terminals No. 4 (Black wire) and No. 5 (Black/White wire) at DLC. If both resistance readings are 5 ohms or less, repair or replace NGS tester. Retest system for normal operation. If any resistance reading is greater than 5 ohms, repair open in Black wire and/or Black/White wire between ground and DLC. Retest system for normal operation.
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