C0895

DTC C0895

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (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 C0895
- Device Voltage

Diagnostic Fault Information





Circuit/System Description

Voltage is supplied to the electronic suspension control (ESC) module through the battery positive voltage circuit. The ESC module monitors the supplied voltage to determine if it is within a valid operating range.

Conditions for Running the DTC

Ignition is ON.

Conditions for Setting the DTC

The DTC is set when the battery voltage is outside the normal range of 9-15.5 volts.

Action Taken When the DTC Sets

* The electronic suspension control system (ECS) is disabled for the duration of the ignition cycle.
* The TCS indicator illuminates on the IPC.
* The DIC displays the Service Stability System message, if equipped.

Conditions for Clearing the DTC

The DTC is saved as history when the ESC module no longer sees battery voltage outside the normal range of 9-15.5 volts. The DTC will clear if the fault does not return after 50 consecutive ignition cycles.

Diagnostic Aids

* DTC C0895 may set when the vehicle is placed on a battery charger, on fast charge, for a long period of time. It may also be set by an intermittent charging system malfunction.
* A low voltage DTC in multiple modules indicates a concern in the charging system.
* A high or low voltage value in multiple modules indicates a concern in the charging system.

Reference Information
Schematic Reference

Electronic Suspension Control Schematics (Electronic Suspension Control)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Electronic Suspension Control Description and Operation (Electronic Suspension Control Description and Operation)
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.

Circuit/System Verification

1. Engine running measure and record the voltage at the battery terminals. Verify that the battery voltage is 12.6-15.5 volts.

• If the battery voltage is not within the specified range, refer to Charging System Test (Charging System Test)

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the ESC module.
2. Ignition OFF, test for less than 5 ohms between the ground circuit terminal 2 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 1 and ground.

• If the test lamp did not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. If all circuits test normal, replace the ESC module.

Repair Instructions

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

Control Module References (Programming and Relearning) for ESC module replacement, setup and programming