DTC C0800

DTC C0800

Diagnostic Instructions

DTC Descriptors

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:

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

Reference Information

Schematic Reference

Control Module References

Connector End View Reference

Component Connector End Views

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Engine running, measure and record the voltage at the C1 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 .

3. Observe the scan tool of the appropriate module Battery Positive parameter. Verify that the scan tool displays a value that is within 2 V of the battery terminal voltage.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate module/sensor.
2. Ignition OFF, test for less than 3 Ω between the ground circuit terminals listed below and ground:

•	Terminal H, K83 Handbrake control module

•	Terminal 1 X1, K43 Power steering control module

•	Terminal 13, K17 Electronic brake control module

•	Terminal 18, K19 Suspension control module

•	Terminal 19, K19 Suspension 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+ or ignition circuits listed below and ground:

•	Terminal A, K83 Handbrake control module

•	Terminal 2 X1, K43 Power steering control module

•	Terminal 1, K17 Electronic brake control module

•	Terminal 25, K17 Electronic brake control module

•	Terminal 1, K19 Suspension control module

•	Terminal 17, K19 Suspension 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 after completing the diagnostic procedure.