C0896

MP 3023/3024-NQH - Transfer Case


DTC C0896

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (with HP2) (Initial Inspection and Diagnostic Overview)Diagnostic System Check - Vehicle (without HP2) (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptor
DTC C0896 03
- Device Voltage Range Voltage Below Threshold

DTC C0896 07
- Device Voltage Range Voltage Above Threshold

Diagnostic Fault Information





Circuit/System Description

This DTC is set up to detect a high or low voltage situation. This could indicate a vehicle issue in which all electrical components would be affected. It could also be transfer case control module specific do to poor power or ground connections.

Conditions for Running the DTC

* The ignition is ON.
* System voltage is 10.5-18.5 volts.

Conditions for Setting the DTC

The voltage is above 18.5 volts or below 10.5 volts for 15 seconds.

Action Taken When the DTC Sets

* Shifting is disabled until the voltages change to be within the specifications.
* The SERVICE 4WD will illuminate for the remainder for the ignition cycle.

Conditions for Clearing the DTC

* The transfer case shift control module clears the DTC if the condition for setting the DTC is not currently present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.

Reference Information
Schematic Reference

Transfer Case Control Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information.

Diagnostic Aids

Perform the motor learn procedure before normal operation will occur.

Circuit/System Testing

1. If the voltage is low check the voltage on other vehicle systems to determine if this is a vehicle wide condition and take appropriate actions. If this is transfer case specific check the ignition 3 feed to the transfer case control module and the ground for the transfer case control module for proper connections.
2. If the voltage is high, this is likely a vehicle issue such as an alternator problem or the vehicle has been hooked up improperly during a jump start.
3. After the condition is corrected perform the motor learn procedure.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Transfer Case High/Low Clutch Reset (Transfer Case High/Low Clutch Reset)