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6E–280 4JH1 ENGINE DRIVEABILITY AND EMISSIONS Diagnostic Trouble Code (DTC) P1625 (Symptom Code B) (Flash Code 76) ECM Main Relay Switched Off Too Late Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to On Board Diagnostic (OBD) System Check 2 1. Connect the Tech 2. 2. Review and record the failure information. 3. Select “F0: Read DTC Infor As Stored By ECU” in “F0: Diagnostic Trouble Codes”. Is the DTC P1625 (Symptom Code B) stored as — Go to Step 3 Refer to Diagnostic Aids and Go to Step 3 3 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Select “F1: Clear DTC Information” in “F0: Diagnostic Trouble Codes” with the Tech 2 and 3. Operate the vehicle and monitor the “F0: Read DTC Infor As Stored By ECU” in the “F0: Was the DTC P1625 (Symptom Code B) stored in this — Go to Step 4 Refer to Diagnostic Aids 4 Using the DVM and check the ECM main relay. 1. Ignition “Off”, engine “Off”. 2. Remove the ECM main relay from the relay box. 3. Check the relay switch. Was the DVM indicated specified value? No continuitly Go to Step 5 Replace ECM main relay and verify repair 5 Is the ECM programmed with the latest software — Verify repair Go to Step 6 6 Replace the ECM. — Verify repair — 1 2 ECM Main Relay |