Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
 
Vehicle » Powertrain Management » Computers and Control Systems » Testing and Inspection » Symptom Related Diagnostic Procedures » QT: Powertrain Control Module (PCM) Quick Test  
 
 
  QT: Powertrain Control Module (PCM) Quick Test  
 

QT: Step 1: PCM QUICK TEST

QT1 PERFORM PCM QUICK TEST

Note: If the vehicle was brought in with an emission compliance failure symptom, please refer to: Pinpoint Test EM See: Pinpoint Tests\Tests EM: Emissions Compliance

  • Complete preliminary checks looking for obvious concerns that may relate to the symptom. Check items such as those listed:
  • Related electrical connectors or fuses
  • Vacuum lines (leaks, routing )
  • Air intake system (leaks, restrictions)
  • Fuel quality (octane, contamination winter/summer blend)
  • Cooling system (engine operating at proper temperature)
  • Access any related OASIS or TSB information (if available).
  • Complete PCM Quick Test to access any DTCs. Note any Key On Engine Off, Key On Engine Running (if engine runs) and Continuous Memory (MIL and non-MIL) DTCs.

Note: If unable to access DTCs, or any scan tool communication concern exist, refer to Pinpoint Test QA See: Pinpoint Tests for additional information on retrieving MIL and non-MIL DTCs, refer to Diagnostic Methods See: Scan Tool Testing and Procedures\Diagnostic Methods Overview (Continuous Memory Self-Test).

Were any DTC present?

  

QT2 ENGINE RUNS ROUGH AT IDLE WITH KEY ON ENGINE RUNNING OR CONTINUOUS MEMORY DTC(S): CHECK INJECTOR FAULT (INJxF) PID(S)

Note: An injector circuit could result in unrelated DTC(s) being received from the PCM.

  • Key on, engine off.
  • Access the INJxF PIDs (the "x" indicates the injector number). There will be one INJxF PID for each engine cylinder.

Does any of the INJxF PIDs indicate "Yes"?