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6E–96 4JH1 ENGINE DRIVEABILITY AND EMISSIONS Condition for setting the DTC and action taken when the DTC sets Circuit Description The mass air flow (MAF) sensor is part of the intake air Diagnostic Aids An intermittent may be caused by the following: • Poor connections. • Misrouted harness. • Rubbed through wire insulation. • Broken wire inside the insulation. • Poor connection at ECM-Inspect harness connectors for backed out terminals, improper mating, broken • Damaged harness-Inspect the wiring harness for damage. If the harness appears to be OK, observe Diagnostic Trouble Code (DTC) P0100 (Symptom Code 7) (Flash Code 65) Mass Air Flow (MAF) Sensor Voltage Supply Circuit High Input Flash Code Code Symptom Code MIL DTC Name DTC Setting Condition Fail-Safe (Back Up) 65 P0100 7 ON Mass Air Flow (MAF) Sensor MAF sensor power supply ECM uses mass air flow 9 ON Mass Air Flow (MAF) Sensor MAF sensor power supply B ON Mass Air Flow (MAF) Sensor 1. Engine speed is between 600rpm and 5000rpm. 2. MAF sensor output is below -33.7mg/strk. C ON Mass Air Flow (MAF) Sensor 1. Engine speed is between 600rpm and 5000rpm. 2. MAF sensor output is more than 1784mg/strk. 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 P0100 (Symptom Code 7) stored as — Go to Step 3 Refer to Diagnostic Aids and Go to Step 3 |