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 Descriptor
DTC P0575: Cruise Control Switch Signal CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
B+ | 1 | 1 | -- | -- |
Cruise Control Switch Signal | 1 | 1 | P0575 | -- |
1. Cruise Control Malfunction | ||||
Circuit/System Description
The cruise control switch is an input to the engine control module (ECM). The ECM monitors the cruise control set/coast and resume/accelerate switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The ECM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The ECM detects an invalid voltage signal on the cruise control switch signal circuit.
Actions Taken When the DTC Sets
The cruise control system is disabled.
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Cruise Control Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Ignition ON, observe the Cruise On/Off switch parameter. The reading should be Off and change to On when the switch is pressed.
- Observe the Cruise Set/Coast Switch parameter. The reading should be Inactive and change to Active when the switch is pressed.
- Observe the Cruise Resume/Accel. Switch parameter. The reading should be Inactive and change to Active when the switch is pressed.
Circuit/System Testing
- Ignition OFF, disconnect the cruise control switch connector.
- Ignition ON, Verify the cruise control switch parameters are Off or Inactive.
- If all circuits test normal replace the cruise control switch.
| ⇒ | If not the specified values test the switch signal circuit for a short to voltage. If the circuit tests normal replace the ECM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM or ECM replacement, setup, and programming |
