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 Descriptors
DTC C0800 03: Device Power 1 Circuit Voltage Below ThresholdDTC C0800 07: Device Power 1 Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
IGN I | C0800 03 | C0800 03 | -- | -- |
Ground | -- | C0800 03 | -- | -- |
Circuit/System Description
The distance sensing cruise control (DSCC) module monitors the ignition 1 voltage circuit in order to determine if the voltage is within the normal operating range. When the DSCC module detects that the ignition 1 voltage is below 9.2 volts or above 16 volts, DTC C0800 sets.
Conditions for Running the DTC
C0800 03 and 07
| • | Ignition is in RUN. |
| • | Vehicle speed is greater than 40.2 km/h (25 mph). |
Conditions for Setting the DTC
C0800 03
| • | The DSCC module detects that the ignition 1 voltage is less than 9.2 volts. |
| • | The above condition is present for 7 seconds. |
C0800 07
| • | The DSCC module detects that the ignition 1 voltage is greater than 16 volts. |
| • | The above condition is present for 7 seconds. |
Action Taken When the DTC Sets
C0800 03 and 07
The following actions occur:
| • | Loss of adaptive cruise function |
| • | Cruise Not Ready indicator illuminates in the DIC. |
Conditions for Clearing the DTC
| • | The DTC becomes history when the fault is no longer present. |
| • | A History DTC clears after 100 malfunction-free ignition cycles. |
| • | The DSCC receives a clear code command from the scan tool. |
Diagnostic Aids
| • | A possible cause of this DTC could be overcharging with a battery charger or jump starting. |
| • | A low voltage DTC in multiple modules indicates a concern in the charging system. |
| • | A high voltage value in multiple modules indicates a concern in the charging system. |
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Verification
Engine running measure and record the voltage at the battery terminals. Verify that the battery voltage is 12.6-15.5 volts.
| ⇒ | If the battery voltage is not within the specified range, refer to Charging System Test. |
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the distance sensing cruise control (DSCC) module.
- Ignition OFF, test for less than 5.0 ohms between the ground circuit terminal 6 and ground.
- Ignition ON, verify a test lamp illuminates between the ignition 1 voltage circuit terminal 1 and ground.
- If the circuits test normal, test or replace the DSCC module.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp did not illuminate , test the ignition 1 circuit for a short to ground or an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for DSCC module replacement, setup, and programming
