Diagnostic Instructions
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
| 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
| • | 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
Cruise Control Schematics
Connector End View Reference
Component Connector End Views
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.
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.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
- Ignition ON, verify a test lamp illuminates between the ignition 1 voltage circuit terminal 1 and ground.
| ⇒ | If the test lamp did not illuminate , test the ignition 1 circuit for a short to ground or an open/high resistance. |
- If the circuits test normal, test or replace the DSCC module.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for DSCC module replacement, setup, and programming
