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.

Turn Ignition off.
Disconnect the ECM harness connectors.

Disconnect the Wastegate Solenoid harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Are any wires or pins damaged?

Yes
1. Repair or replace any damaged wire or connectors.
2. POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL)
No
1. Go to next step.
Reconnect the ECM harness connector.
Reconnect the disconnected Wastegate Solenoid harness connector.

Turn the Ignition on, engine not running.

Disconnect the Wastegate Solenoid harness connector.

Connect an incandescent test light across the supply and driver pins at the Wastegate Solenoid harness connector.

NOTE: The ECM will perform a self check of the circuit after approximately 30 seconds, which should light the incandescent test light.

Does the light illuminate brightly after 30 seconds of being connected?

Yes
1. Replace the Wastegate Solenoid.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
No
1. Go to next step.
Connect an test light between the Wastegate Solenoid connector Fused ignition switch output circuit and battery negative.
Compare the test light brightness to that of a direct connection to the battery.

Does the light illuminate brightly?

Yes
1. Go to next step.
No
1. Repair the open (F504) Fused Ignition switch output circuit.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
Disconnect the ECM harness connectors.
Measure the resistance of the Wastegate Solenoid driver circuit between the Wastegate Solenoid harness connector and the ECM harness connector.

Is the resistance less than 10 Ohms?

Yes
1. Go to next step.
No
1. Repair the open (K139) Wastegate Solenoid control circuit.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
Measure the resistance of the (K139) Wastegate Solenoid driver circuit between the Wastegate Solenoid harness connector and battery negative.
Is the resistance less than 10 Ohms?

Yes
1. Repair the (K139) Wastegate solenoid circuit shorted to ground.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
No
1. Go to next step.
Measure the voltage between the (K139) Wastegate Solenoid driver circuit at the Wastegate Solenoid connector and battery negative.
Is the voltage less than 1 volt?

Yes
1. Go to next step.
No
1. Repair the (K139) Wastegate solenoid driver shorted to voltage.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
Measure the resistance between the (K139) Wastegate Solenoid driver circuit in the ECM harness connector and all other circuits in the ECM harness connectors.
Is the resistance less than 10 Ohms?

Yes
1. Repair the (K139) Wastegate solenoid circuit shorted to another circuit.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
No
1. Go to next step.
Reconnect the ECM harness connector.
Reconnect the disconnected Wastegate Solenoid harness connector.

Turn the Ignition on, engine not running.

Disconnect the Wastegate Solenoid harness connector.

Connect an incandescent test light across the supply and driver pins at the Wastegate Solenoid harness connector.

NOTE: The ECM will perform a self check of the circuit after approximately 30 seconds, which should light the incandescent test light.

Does the light illuminate brightly after 30 seconds of being connected?

Yes
1. Refer to SYMPTOM: INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .
No
1. Replace the ECM.
2. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL) .