Test NF-9A - Checking Engine Controller Grounds & Power Circuits
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see WIRING DIAGRAMS
at end of article.
- Turn ignition switch to OFF position. Disconnect and inspect SBEC connector terminals. Repair connector terminals if damaged. Perform VERIFICATION TEST VER-2 . If connector terminals are okay, go to next step.
- Place DRB-II in ohmmeter mode. Probe terminal No. 5 (Black/White wire) of SBEC connector. If resistance is less than one ohm, go to next step. If resistance is more than one ohm, repair open in Black/White wire. Perform VERIFICATION TEST VER-2 .
- Probe terminal No. 11 (Black/Tan wire) at SBEC connector. If resistance is more than one ohm, repair open in Black/Tan wire. Perform VERIFICATION TEST VER-2 . If resistance is less than one ohm, go to next step.
- Probe terminal No. 12 (Black/Tan wire) at SBEC connector. If resistance is more than one ohm, repair open to ground in Black/Tan wire. Perform VERIFICATION TEST VER-2 . If resistance is less than one ohm, go to next step.
- Place DRB-II in voltmeter mode. Turn ignition switch to ON position. Probe terminal No. 9 (Dark Blue wire) at SBEC connector. If voltage is less than 10 volts, repair open Dark Blue wire. Perform VERIFICATION TEST VER-2 . If voltage is more than 10 volts, reconnect SBEC connector. Test is complete.