Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

VERIFY CURRENT DTC
1. Turn the ignition on.
2. With the scan tool, erase PCM DTCs.
3. Perform several engine run cycles, turning the ignition off for at least 20 seconds between each engine run cycle.
4. With the scan tool, read the PCM DTCs.
  Did this DTC set again?
  
  Yes
  - Go To 2.
  No
  - Refer to INTERMITTENT CONDITION and perform the INTERMITTENT CONDITION diagnostic procedure.
(F942) IGNITION SWITCH OUTPUT (RUN-START) CIRCUITS (PCM)

Fig 1: Checking Ignition Switch Output (Run-Start) Circuits (PCM)
Courtesy of CHRYSLER LLC
1. Turn the ignition on.
2. Using a 12-Volt test light connected to ground, probe the (F942) Fused Ignition Switch Output circuit in the PCM C1 harness connector.
3. Turn the ignition to run.
  NOTE:
  The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3.
  No
  - Repair the open or short to ground in the (F942) Ignition Switch Output circuit. Inspect and replace fuses as necessary.
  - Refer to POWERTRAIN VERIFICATION TEST and perform the POWERTRAIN VERIFICATION TEST.
(Z902) GROUND CIRCUITS (PCM)

Fig 2: Checking Ground Circuits (PCM)
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-Volt test light connected to battery voltage, probe all of the (Z902) PCM ground circuits.
  NOTE:
  The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly at all terminals?
  
  Yes
  - Go To 4.
  No
  - Repair the Ground circuit(s).
  - Refer to POWERTRAIN VERIFICATION TEST and perform the POWERTRAIN VERIFICATION TEST.
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Intake Air Temperature Sensor and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
5. Look for the data to change or for the DTC to reset during the wiggle test.
6. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Refer to POWERTRAIN VERIFICATION TEST and perform the POWERTRAIN VERIFICATION TEST.
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, Powertrain Control , Removal .
  - Refer to POWERTRAIN VERIFICATION TEST and perform the POWERTRAIN VERIFICATION TEST.