Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC C0895: Device VoltageDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
B+ | C0895 | C0895 | -- | -- |
IGN | C0895 | C0895 | -- | -- |
Ground | -- | C0895 | -- | -- |
Circuit/System Description
Voltage is supplied to the electronic suspension control (ESC) module through battery positive voltage and the ignition voltage circuits. The ESC module monitors the supplied voltage to determine if it is within a valid operating range.
Conditions for Running the DTC
The Ignition is ON.
Conditions for Setting the DTC
The DTC sets when the system voltage is outside the normal range of 9-15.5 V.
Action Taken When the DTC Sets
| • | Antilock Brake System (ABS) and Traction Control System (TCS) are disabled for the duration of the ignition cycle. |
| • | The ABS and TCS indicators illuminates on the IPC. |
| • | The DIC displays the SERVICE RIDE CONTROL message. |
Conditions for Clearing the DTC
The DTC is saved as history when the ESC module no longer sees system voltage outside the normal range of 9-15.5 V. The DTC will clear if the fault does not return after 50 consecutive ignition cycles.
Diagnostic Aids
| • | A high or low voltage DTC set in multiple modules indicates a concern in the charging system. |
| • | A possible cause of this DTC could be overcharging with a battery charger or jump starting. |
| • | A high or low voltage value in multiple modules indicates a concern in the charging system. |
Reference Information
Schematic Reference
Electronic Suspension Control Schematics
Connector End View Reference
Description and Operation
Electronic Suspension Control Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Testing
- Engine running measure and record the voltage at the battery terminals. Verify that the battery voltage is 12.6-15.5 V.
- Ignition OFF, disconnect the harness connector at the ESC module.
- Ignition OFF, test for less than 5 Ω of resistance between the ground circuit terminal 2 and ground.
- Ignition On, verify a test lamp illuminates between the B+ circuit and Ignition circuit listed below.
- If all circuits test normal, replace the ESC module.
| ⇒ | If the battery voltage is not within the specified range, refer to Charging System Test |
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| • | B+ terminal 1 |
| • | IGN terminal 19 |
| ⇒ | If test lamp did not illuminate , test the B+ or the Ignition circuit for an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ESC module replacement, setup and programming
