|
|
6E–108 4JH1 ENGINE DRIVEABILITY AND EMISSIONS The ECM supplies 5 volts signal to the IAT sensor 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) P0110 (Symptom Code 1) (Flash Code 23) Intake Air Temperature (IAT) Sensor Circuit High Input 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 P0110 (Symptom Code 1) 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 P0110 (Symptom Code 1) stored in this — Go to Step 4 Refer to Diagnostic Aids and Go to Step 4 4 Check for poor/faulty connection at the IAT sensor or — Verify repair Go to Step 5 5 Visually check the IAT sensor. — Go to Step 12 Go to Step 6 92 84 1 3 C-116 C-57(B) |