QT: Powertrain Control Module (PCM) Quick Test

QT: Powertrain Control Module (PCM) Quick Test

QT1 CARRY OUT A VISUAL INSPECTION

Note: Visually inspect the vehicle for aftermarket accessories and performance modifications (air filter, exhaust system, intake system, performance chip, and turbocharger). Refer to Diesel Electronic Engine Control (EEC) System, Modifications to OBD Vehicles.

- Access any related OASIS or TSB information.
- Inspect the air cleaner, inlet ducting, tubes and clamps.
- Inspect all hoses for damage, leaks, cracks, blockage, and proper routing.
- Inspect the fuel system including the fuel tank and the fuel lines for kinks, bends and/or leakage.
- Inspect the wiring harness for correct routing and chafing.
- Inspect the exhaust system.
- Check for the correct engine oil level and quality.
- Check the engine coolant for proper level.

Is any concern present?






QT2 VEHICLE PREPARATION

- Place the transmission gear selector into PARK (automatic transmission) or NEUTRAL (manual transmission).
- Apply the parking brake.
- Block the drive wheels.
- Turn off all electrical loads (radios, lights, A/C, blower, and fans).

Has the vehicle preparation been completed?






QT3 CARRY OUT THE PCM QUICK TEST

Note: If unable to access the PCM or a scan tool communication concern exists, GO to Pinpoint Test AE.

- Connect the scan tool to the data link connector (DLC). Refer to Scan Tool Hookup.
- Carry out the PCM Quick Test to access and record any key on engine off (KOEO), key on engine running (KOER) and continuous memory DTCs. Refer to Quick Test Description.
- Access and record the Freeze Frame Data. Refer to Freeze Frame Data.

Are any DTCs present?