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ESC




DTC C0895 (ESC)

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 C0895 00
- Device Voltage -Electronic Suspension Control Module 12V

Diagnostic Fault Information





Typical Scan Tool Data





Circuit/System Description

Twelve volts is supplied to the electronic suspension control (ESC) module by the battery positive (B+) voltage circuit. The ESC module monitors the supplied voltage to determine if it is within a valid operating range. Damage to components, and incorrect data may occur if the voltage is out of range. The ESC module disables all outputs, and sets DTC C0895 00, if high or low 12V battery voltage is detected.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

12V battery voltage is outside the normal range of 9.0-15.5 volts.

Action Taken When the DTC Sets

The ESC module disables all functionality.

Conditions for Clearing the DTC

* A current DTC will clear when the voltage returns to the normal range.
* A history DTC will clear if the condition does not return after 50 consecutive ignition cycles.

Diagnostic Aids

* A high or low voltage value in multiple modules indicates a concern in the charging system.
* Overcharging with a battery charger or jump starting can cause this DTC to set.

Reference Information
Schematic Reference

* Electronic Suspension Control Schematics (Electronic Suspension Control)
* Power Distribution Schematics ([1][2]Electrical Diagrams)
* Ground Distribution Schematics ()

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)
* Charging System Description and Operation (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, accessories OFF, measure and record the battery voltage at the 12V battery terminals. The voltage should be between 12.6 and 15.0 volts.

If not within the specified range, refer to Charging System Test (Charging System Test).

2. Observe the scan tool ESC module Battery Voltage Signal parameter. The reading should be between 12.6 and 15.0 volts.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector of the ESC module.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the ground circuit terminal 47 and ground.

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

3. Verify that a test lamp illuminates between the 12V B+ circuit terminal 32 of the ESC module and ground.

If the test lamp does not illuminate, test the 12V 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.