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.

Ignition on, engine not running.
With the DRBIII®, read DTCs and record the related Freeze Frame data.

Check for any related TSBs.

With the DRBIII®, read the S/C Switch volts status.

Is the S/C Switch voltage below 1.0 volt?
1. Yes --> Go To 2
2. No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
Turn the ignition off.
Disconnect the S/C ON/OFF Switch harness connector.

Ignition on, engine not running.

With the DRBIII® in Sensors, read the S/C Switch volts.

Did the S/C Switch volts change to 5.0 volts?
1. Yes --> Replace the S/C ON/OFF Switch.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 3
Turn the ignition off.
Disconnect the S/C RESUME/ACCEL Switch harness connector.

Ignition on, engine not running.

With the DRBIII® in Sensors, read the S/C Switch volts.

Did the S/C Switch volts go above 4.0 volts?
1. Yes --> Replace the Resume/Accel Switch.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 4
Turn the ignition off.
Disconnect the lower clockspring 6-way harness connector per Service Information.

Ignition on, engine not running.

With the DRBIII® in Sensors, read the S/C Switch voltage.

Did the S/C Switch volts change to 5.0 volts?
1. Yes --> Replace the Clockspring.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 5
Turn the ignition off.
Connect the Clockspring harness connector per Service Information.

Disconnect the PCM harness connectors.

Measure the resistance between a known good ground and the (V37) S/C Switch Signal circuit at S/C ON/OFF Switch harness connector.

Is the resistance below 100 ohms?
1. Yes --> Repair the short to ground in the (V37) S/C Switch Signal circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 6
Measure the resistance between the (V37) S/C Signal circuit and the (K4) Sensor ground circuit at the ON/OFF Switch harness connector.
Is the resistance below 5.0 ohms?
1. Yes --> Repair the short between the (K4) Sensor ground and the (V37) S/C Switch Signal circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 4 .
2. No --> Go To 7

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 .