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® record all DTCs and the related Freeze Frame data.
With DRBIII®, monitor Battery Temperature Sensor volts.
Is the voltage below 0.5 of a volt?
- Yes --> Go To 2
- No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
- Ignition on, engine not running.
With the DRBIII® in sensors, read the Battery Temp Sensor Voltage value.
Disconnect the Battery Temperature Sensor harness connector.
Did the Battery Temperature Voltage value change from below 1.0 volt to above 4.5 volts?
- Yes --> Replace the Battery Temperature Sensor.
- No --> Go To 3
- Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K25) Batt Temp Signal circuit at the Battery Temp Sensor harness connector.
Is the resistance below 100 ohms?
- Yes --> Repair the short to ground in the (K25) Batt Temp Signal circuit.
- No --> Go To 4
- Measure the resistance between the (K25) Batt Temp Signal circuit and the (K900) Sensor ground circuit at the Battery Temp Sensor harness connector.
Is the resistance below 5.0 ohms?
- Yes --> Repair the short between the (K900) Sensor ground and the (K125) Batt Temp Signal circuit.
- No --> Go To 5
- 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.
- Repair
- Replace and program the Powertrain Control Module per Service Information.
- Perform (NGC) POWERTRAIN VERIFICATION TEST VER - 2 .
- Repair
NOTE:
Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.