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.

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

With the DRBIII® in Sensors, read the Speed Control inputs state.

While monitoring the DRBIII®, push the Speed Control On/Off Switch several times, then leave it on.

Did the DRBIII® show Speed Control Switching off and on?
1. Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 2
Turn the ignition off.
Disconnect the S/C On/Off Switch 2-way harness connector only.

Measure the resistance across the S/C On/Off Switch.

Is the resistance between 20.3K and 20.7K ohms?
1. Yes --> Go To 3
2. No --> Replace the On/Off Switch.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
Disconnect the upper and lower 6-way clockspring harness connector per Service Information.
Measure the resistance of the (K4) Sensor ground circuit between the upper and lower 6-way clockspring harness connectors.

Measure the resistance of the (V37) S/C Switch Signal circuit between the upper and lower 6-way clockspring harness connectors.

Was the resistance above 5.0 ohms for either circuit?
1. Yes --> Replace the clockspring.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 4
Connect the Clockspring harness connectors per Service Information.
Disconnect the Speed Control On/Off Switch 2-way harness connector only.

Ignition on, engine not running.

Measure the voltage on the (V37) S/C Switch Signal circuit in the On/Off Switch 2-way connector.

Is the voltage above 5.2 volts?
1. Yes --> Repair the short to voltage in the (V37) S/C Switch Signal circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 5
Turn the ignition off.
Disconnect the upper and lower Clockspring harness connectors per Service Information.

Disconnect the PCM harness connectors.

Measure the resistance of the (V37) S/C Switch Signal circuit from the PCM harness connector to the lower Clockspring harness connector.

Is the resistance below 5.0 ohms?
1. Yes --> Go To 6
2. No --> Repair the open in the (V37) S/C Switch Signal circuit between the PCM and Clockspring.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
Measure the resistance of the (K4) Sensor ground circuit from the PCM harness connector to the lower Clockspring harness connector.
Is the resistance below 5.0 ohms?
1. Yes --> Go To 7
2. No --> Repair the open (K4) Sensor ground circuit between the PCM and Clockspring.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
Measure the resistance of the (V37) S/C Switch Signal circuit from the upper Clockspring harness connector to the On/Off switch harness connector.
Is the resistance below 5.0 ohms?
1. Yes --> Go To 8
2. No --> Repair the open in the (V37) S/C Switch Signal circuit, Clock-spring to S/C Switch.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
Measure the resistance of the (K4) Sensor ground circuit from the On/Off Switch 2-way harness connector to the upper Clockspring harness connector.
Is the resistance below 5.0 ohms?
1. Yes --> Go To 9
2. No --> Repair the open in the (K4) Sensor ground circuit between the Clockspring and S/C Switch.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .

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 - 4 .