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6E–140 4JH1 ENGINE DRIVEABILITY AND EMISSIONS Diagnostic Trouble Code (DTC) P0251 (Symptom Code 7) (Flash Code 53) Injection Pump Malfunction 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 P0251 (Symptom Code 7) 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 P0251 (Symptom Code 7) stored in this — Go to Step 4 Refer to Diagnostic Aids and Go to Step 4 4 Was the DTC P0335 (Symptom Code B), P0335 — Go to DTC Chart P0335 (Symptom Code B) (Symptom Code D) or P1335 (Symptom Code A) Go to Step 5 5 Check for poor/faulty connection at the ECM or PSG — Verify repair Go to Step 6 91 8 C-57(B) E-6 |