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 before continuing.
Start the engine.

Allow the engine to idle.

Using the DRBIII®, perform the NVLD FORCED MONITOR TEST.

Monitor the NVLD Switch state.

NOTE: As the test runs, the NVLD Switch should go from an OPEN state to a CLOSED state and then return to OPEN when the test is complete.

Did the NVLD Switch operate as described above?
1. Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 2
Turn the ignition off.
Disconnect the NVLD electrical harness connector.

Ignition on, engine not running.

Monitor the NVLD Switch state on the DRBIII®.

Connect a jumper wire between the (K107) NVLD Switch Signal circuit and the (Z910) ground circuit in the NVLD harness connector.

Does the Switch change from OPEN to CLOSED?
1. Yes --> Replace the NVLD Assembly.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 3
NOTE: Remove the jumper wire before continuing.
Turn the ignition off.
Disconnect the PCM harness connectors.

Ignition on, engine not running.

Measure the voltage on the (K107) NVLD Switch Signal circuit in the NVLD electrical harness connector.

Is the voltage above 5.2 volts?
1. Yes --> Repair the short to voltage in the (K107) NVLD Switch Signal circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 4
Turn the ignition off.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.

Measure the resistance of the (K107) NVLD Switch Signal circuit from the NVLD electrical harness connector to the appropriate terminal of special tool # 8815.

Is the resistance below 5.0 ohms?
1. Yes --> Go To 5
2. No --> Repair the open in the (K107) NVLD Switch Signal circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
Measure the resistance between the (K107) NVLD Switch Signal circuit and the (K106) NVLD Sol Control circuit in the NVLD electrical harness connector.
Is the resistance below 5.0 ohms?
1. Yes --> Repair the short between the (K107) NVLD Switch Signal circuit and the (K106) NVLD Sol Control circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 6
Measure the resistance between the (Z910) Ground circuit and ground.
Is the resistance below 5.0 ohms?
1. Yes --> Go To 7
2. No --> Repair the open in the (Z910) Ground circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .

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 - 5 .