Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

1) ACTIVE DTC
Ignition on, engine not running.

With a scan tool, read DTCs.

Is the DTC active at this time?

Yes
1. Go To step 2).
No
1. Refer to INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST .
2) NVLD SOLENOID

Fig 1: Checking NVLD Solenoid
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the NVLD Assembly harness connector.

Measure the resistance of the NVLD Solenoid coil.

Is the resistance between 7.5 to 8.5 ohms?

Yes
1. Go To step 3).
No
1. Replace the NVLD Assembly.
2. Perform POWERTRAIN VERIFICATION TEST .
3) (K106) NVLD SOLENOID CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE

Fig 2: Checking NVLD Solenoid Control Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Disconnect the C3 PCM harness connectors.

Take this measurement with the Ignition in the off (lock) position and in the Ignition on, engine off position.

Measure the voltage on the (K106) NVLD Solenoid Control circuit in the NVLD Assembly harness connector.

Is the voltage above 0 volts?

Yes
1. Repair the short to battery voltage in the (K106) NVLD Solenoid Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go To step 4).
4) (K106) NVLD SOLENOID CONTROL CIRCUIT OPEN

Fig 3: Checking NVLD Solenoid Control Circuit
Courtesy of DAIMLERCHRYSLER CORP.

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 (K106) NVLD Solenoid Control circuit from the NVLD Assembly harness connector to the appropriate terminal of special tool #8815.

Is the resistance below 5.0 ohms?

Yes
1. Go To step 5).
No
1. Repair the open in the (K106) NVLD Solenoid Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
5) (Z42) GROUND CIRCUIT OPEN

Fig 4: Checking Ground Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Measure the resistance between the (Z42) Ground circuit and ground.

Is the resistance below 5.0 ohms?

Yes
1. Go To step 6).
No
1. Repair the open in the (Z42) Ground circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
6) PCM
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.

Were there any problems found?

Yes
1. Repair as necessary.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Replace and program the Powertrain Control Module per Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .