Circuit Description
The distance sensing cruise control (DSCC) module monitors the ignition 1 voltage circuit 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 V or above 16 V, the DTC C0800 sets.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
| • | DTC C0800 Device Power 1 Circuit Voltage Below Threshold |
| • | DTC C0800 Device Power 1 Circuit Voltage Above Threshold |
DTC Symptom | DTC Symptom Descriptor |
|---|---|
03 | Voltage Below Threshold |
07 | Voltage Above Threshold |
Conditions for Running the DTC
C0800 03 and 07
| • | Ignition is in RUN. |
| • | Vehicle moving at a speed 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 DSCC 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 module receives a clear code command from the scan tool. |
Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections .
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference : Cruise Control Schematics Connector End View Reference: Master Electrical Component List | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate that the Ignition 1 Voltage parameter is within the specified range? | 9.2-16 V | Go to Diagnostic Aids | Go to Step 3 |
3 | Is DTC P0562, P0563 current in the powertrain control module (PCM) and/or B1325 current in the body control module (BCM)? | -- | Go to Step 4 | |
4 |
Does the voltage measure greater than the specified value? | 9.2 V | Go to Step 5 | Go to Step 8 |
5 |
Does the voltage measure less than the specified value? | 9.2 V | Go to Step 9 | Go to Step 6 |
6 | Test the DSCC module ignition 1 voltage circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 7 |
7 | Inspect for poor connections at the harness connector of the DSCC module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8 |
8 | Repair the high resistance in the DSCC module ignition 1 voltage circuit. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 11 | -- |
9 | Repair the high resistance in the DSCC module ground circuit. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 11 | -- |
10 | Replace the DSCC module. Refer to Distance Sensing Cruise Control Module Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
11 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
