Diagnostic Aids

WARNING: This page is about a different car, the 1996 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following:

Faulty Powertrain Control Module (PCM).

Step 1) Continuous Memory DTC P0320 This code indicates that (2) successive erratic Profile Ignition Pulses (PIP) have occurred. Possible causes are as follows:
- Loose wires and/or connectors.
- Short circuit to ground in ignition secondary system.
- Incorrect 2-way radio installation.
If any of the specified causes were present, repair or replace as necessary. If vehicle will not start, go to CIRCUIT TEST A. If vehicle will start and none of the specified causes were present, replace PCM and repeat QUICK TEST .
Step 2) Continuous Memory DTC P1351 Or P1358 This code indicates a loss of IDM input to the PCM. Possible causes are as follows:
- Open or shorted circuit.
- Faulty ICM.
- Faulty PCM.
If Continuous Memory DTCs P1350, P1351, P1352, P1353 or P1354 are present, go to CIRCUIT TEST JE, step 60).

If any of the specified DTCs are not present, replace PCM and repeat QUICK TEST .