Hello.
I only see the 2 connectors for the ecm and the pin outs should be the same, I have added some more diagrams that may help.
Circuit Diagram
Circuit Description
There should always be a steady "Check Engine" Malfunction Indicator Lamp (MIL), when the ignition is "ON" and engine stopped. Battery positive voltage is supplied directly to the light bulb. The Engine Control Module (ECM) will control the light and turn it "ON" by providing a ground path through the "VLT" wire from the ECM to the bulb.
Test Description
Numbers below refer to circled numbers on the diagnostic chart.
1. The Test Light provides a ground source to the "Check Engine" MIL. If the circuit is okay the "Check Engine" MIL should be "ON" when the terminal "A5" is probed.
2. Battery feed terminals "C16" and "B1"are protected by a 30 amp ECM fusible link in relay/fuse center under the hood near the battery. If terminals "C16" and "B1" have voltage, the ECM grounds or the ECM are faulty.
3. Using a test light connected to 12 volts, probe each of the system ground circuits to be sure a good ground is present.
Diagnostic Aids
Engine runs OK, check;
- Faulty light bulb.
- VLT wire open.
- Meter fuse blown. This will result in no oil or generator lights, seat belt reminder, etc.
Engine cranks, but will not run, check;
- Continuous battery-fuse or fusible link open.
- Ignition RED/GRN wire to ECM open.
- ECM ignition fuse open.
- Poor connection to ECM.
- Battery RED/WHT wire to ECM open.
This diagnostic aid refers to the last 2 diagrams added.
Hope this helps with your repair, Please keep us updated on your repair outcome and do not hesitate to contact us again for further information or assistance.
Thanks for using 2CarPros.
Dave H
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Sunday, March 7th, 2021 AT 12:35 AM