DLC Circuit Troubleshooting
  1. Check for continuity between ECM connector No. 2 terminal No. 19 and body ground.
Is there continuity?
YES -
Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM. ■
NO -
Go to Step 55 .
  1. Disconnect the inertia switch 3P connector.