Diagnostic Test
CHECK FOR AN ACTIVE DTC
This DTC can set when the PCM Nonvolatile RAM is reset (can occur when programming the PCM or when battery voltage to the PCM is very low or lost completely) and an engine start was attempted before cycling the ignition switch from on to off. The Electronic Throttle Body Position Learn procedure must be allowed to run before starting the engine under these conditions. The Electronic Throttle Body Position Learn procedure is run automatically ONLY when the module has experienced a Nonvolatile RAM is reset and then ignition is turned from off to on (no cranking).
Diagnose any Throttle Position Sensor, Crankshaft Position Sensor, Camshaft Position Sensor, Engine Coolant Temperature Sensor, Ambient Air Temperature Sensor, or Vehicle Speed Sensor DTCs before continuing.
- Turn the ignition on.
- With the scan tool, erase DTCs in the PCM.
- Cycle the ignition key off and on several times, leaving the ignition on for at least 10.0 seconds at a time.
- With the scan tool, perform the Throttle Body Self Learning routine.
Did the DTC return?
Yes
- If no other DTCs are present, replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .