Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

Check for any related TSBs.
Ignition on, engine not running.

With the DRBIII®, read DTCs and record the related Freeze Frame data.

Is the Good Trip Counter displayed and equal to zero?
1. Yes --> Go To 2
2. No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Turn the ignition off.
Remove the Condenser Fan Relay from the IPM.

Using a 12-volt test light connected to ground, probe the Internal Fused B+ circuits in the IPM.

Does the test light illuminate brightly?
1. Yes --> Go To 3
2. No --> Repair the open or short to ground in the Internal Fused B+ circuits. Inspect fuses and replace as necessary.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Disconnect the PCM harness connectors.
Measure the resistance of the (Y145) Condenser Fan Relay Control circuit from the IPM to PCM harness connector.

Is the resistance below 5.0 ohms?
1. Yes --> Go To 4
2. No --> Repair the open in the (Y145) Condenser Fan Relay Control circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Measure the resistance between ground and the (Y145) Condenser Fan Relay Control circuit.
Is the resistance above 100 kohms?
1. Yes --> Go To 5
2. No --> Repair the short to ground in the (Y145) Condenser Fan Relay Control circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Momentarily connect a juniper wire between the internal Fused B+ circuit and the (C23) Condenser Fan Relay Output circuit in the IPM connector.
Did the Condenser Fan actuate?
1. Yes --> Go To 6
2. No --> Replace the Condenser Fan Relay.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
1. Repair
  1. Replace and program the Powertrain Control Module per Service Information.
  2. Perform POWERTRAIN VERIFICATION TEST VER - 2 .