Test O: No Module/Network Communication - No Power To NGS Tester
- Inspect NGS tester connector for loose, damaged or corroded terminals. If problem exists, repair connector as necessary and retest system for normal operation. If problem does not exist, go to next step.
- Turn ignition switch to LOCK position. Inspect Data Link Connector (DLC) for physical damage, bent terminals or corrosion. If problem exists, repair as necessary and retest system for normal operation. If problem does not exist, go to next step.
- Inspect fuse No. 206 (10-amp) from instrument panel fuse block. If fuse is okay, go to next step. If fuse is blown, 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/Yellow wire between instrument panel fuse block and DLC. Retest system for normal operation.
- Measure voltage between ground and terminal No. 16 (Orange/Yellow 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/Yellow wire between instrument panel fuse block and DLC. Retest system for normal operation.
- Measure resistance between ground and terminals No. 4 (Black wire) and No. 5 (Brown wire) at DLC. If both resistances are 5 ohms or less, repair or replace NGS tester. Retest system for normal operation. If either resistance is greater than 5 ohms, repair open in Black wire or Brown wire between ground and DLC. Retest system for normal operation.