C0800
DTC C0800
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 Descriptors
DTC C0800 03
- Device Power 1 Circuit Voltage Below Threshold
DTC C0800 07
- Device Power 1 Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit/System Description
The following module/sensors monitor the system voltage circuit to determine if the voltage is within the normal operating range:
* Parking brake control module
* Electronic brake control module
* Suspension control module
* Steering wheel angle sensor
* Rear differential clutch control module
* Multi-axis acceleration sensor
Conditions for Running the DTC
Ignition is ON.
Conditions for Setting the DTC
C0800 03
The module/sensor detects that the system voltage is less than 9.2 V for 7 seconds.
C0800 07
The module/sensor detects that the system voltage is greater than 16 V for 7 seconds.
Action Taken When the DTC Sets
A DIC message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
The system voltage returns to normal operating range.
Diagnostic Aids
* A high or low voltage DTC set in multiple module/sensors indicates a concern in the charging system.
* A possible cause of this DTC could be overcharging with a battery charger or jump starting.
Reference Information
Schematic Reference
* Antilock Brake System Schematics (Electrical Diagrams)
* Electronic Suspension Control Schematics (Electrical Diagrams)
* Park Brake System Schematics ([1][2]Electrical Diagrams)
* Rear Axle Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
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, measure and record the voltage at the battery terminals.
2. Verify that the battery voltage is 12.6-15.0 V.
• If the battery voltage is not within the specified range, refer to Charging System Test (Charging System Test).
3. Observe the scan tool of the appropriate module Battery Positive parameter. The reading should be between 12.6-15.0 V.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connectors at the appropriate module/sensor.
2. Test for less than 3 Ohms between the ground circuit terminals listed below and ground:
* Terminal H, K83 Parking brake control module
* Terminal 16, K17 Electronic brake control module
* Terminal 1, K19 Suspension control module
* Terminal L X1, K47 Rear differential clutch control module
* Terminal 6, B99 Steering wheel angle sensor
* Terminal 6, B119 Multi-axis acceleration sensor
• 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+/ignition circuits listed below and ground:
* Terminal A, K83 Parking brake control module
* Terminal 1, K17 Electronic brake control module
* Terminal 32, K17 Electronic brake control module
* Terminal 32, K19 Suspension control module
* Terminal M X1, K47 Rear differential clutch control module
* Terminal 5, B99 Steering wheel angle sensor
* Terminal 5, B119 Multi-axis acceleration sensor
• If the test lamp does not illuminate, test the circuit for an open/high resistance.
4. If all circuits test normal, replace the appropriate module/sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Steering Angle Sensor Replacement (Removal and Replacement)
* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for electronic brake control module replacement, setup, and programming