Qt1 Perform Pcm Quick Test
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If the vehicle was brought in with an emission compliance failure symptom, GO to M: Emission Compliance
STEP EM1.
- 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 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 exists, GO to A: Unable to Activate Self-Test/Network Communication Error/DTC P1001
STEP QA1.
For additional information on retrieving MIL and non-MIL DTCs, refer to CONTINUOUS MEMORY SELF-TEST
.
Were any DTCs present?
| Yes | No |
|---|---|
| If engine runs rough at idle and Key On Engine Running or Continuous Memory DTC(s) are present: GO to Quick Test QT2 to check injector fault PIDS. All Others: GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS for direction to service DTC(s) after noting the following: Service DTCs in the following order (begin diagnosis with the first DTC output in that mode).
|
GO to STEP 2: NO DTC(S) PRESENT SYMPTOM CHART INDEX for direction to proper STEP 3 Chart.
NOTE:
If symptom is not listed, REFER to applicable article or GO to Z: Intermittent
STEP Z1.
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