Engine Electrical
DTC C0895
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC C0895 00
- Device Voltage - Electronic Suspension Control Module
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
Voltage 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 battery voltage is detected.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
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 ESC module receives battery voltage in the normal range of 9-15.5 volts.
* 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.
* Inspect ground connection G400. Verify that it is clean and tight.
Reference Information
Schematic Reference
* Electronic Suspension Control Schematics (Electronic Suspension Control)
* Power Distribution Schematics (Power Distribution Schematics)
* Ground Distribution Schematics (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 (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
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 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 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 at 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 B+ circuit terminal 32 and ground.
• If the test lamp does 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.