DTC P0575 3.6L (LY7)
Circuit Description
The body control module (BCM) detects a predetermined voltage signal when any cruise control switch function is activated. The BCM sends a group of GMLAN serial data message to the ECM, indicating this function has been requested.
DTC Descriptor
This diagnostic procedure supports the following DTCs:
DTC P0575 Cruise Control Switch Signal Circuit
Conditions for Running the DTC
| • | LAN bus has been initialized and ready for use. |
| • | It is 3 seconds after ignition. |
| • | Ignition 1 voltage is between 10.5-18 volts. |
| • | Normal bus communication is going on. |
| • | Once the above conditions are reached for 10 seconds, DTC P0575 will run continuously. |
Conditions for Setting the DTC
| • | The ECM receives an invalid cruise control switch status GMLAN serial data message from the BCM. |
| • | The diagnosis runs continuously. |
| • | It lasts for 4 seconds. The above conditions last for 4 seconds. |
Actions Taken When DTC sets
| • | The Cruise Control System is switched off. |
| • | The ECM stores the DTC information into memory when the diagnostic runs and fails. |
| • | The Malfunction Indicator Lamp (MIL) does not illuminate. |
| • | The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | A last test failed, or the current DTC, clears when the diagnosis runs and does not fail. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if failures are not reported by this or any other emission related diagnostic. |
| • | Clear the MIL/DTC with a scan tool. |
Diagnostic Aids
This DTC may be stored as a history DTC without affecting the operation of the BCM. If stored only as a history DTC and not retrieved as a current DTC, do not replace the BCM.
If this DTC is retrieved as both a current and a history DTC, replace the BCM.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Cruise Control Schematics Connector End View Reference: Component Connector End Views | |||
1 | Have you conducted Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Does ECM DTC P0575 set as a current DTC? | Go to Step 3 | Go to Diagnostic Aids |
3 | Replace the body control module (BCM). Refer to Control Module References for replacement, setup, and programming. | Go to Step 4 | -- |
4 |
Is there any DTC set again? | Go to Step 2 | System OK |
DTC P0575 4.6L (LH2)
Circuit Description
The body control module (BCM) detects a predetermined voltage signal when any cruise control switch function is activated. The BCM sends a group of GMLAN serial data message to the ECM, indicating this function has been requested.
DTC Descriptor
This diagnostic procedure supports the following DTCs:
DTC P0575 Cruise Control Switch Signal Circuit
Conditions for Running the DTC
| • | LAN bus has been initialized and ready for use. |
| • | It is 3 seconds after ignition. |
| • | Ignition 1 voltage is between 10.5-18 volts. |
| • | Normal bus communication is going on. |
| • | Once the above conditions are reached for 10 seconds, DTC P0575 will run continuously. |
Conditions for Setting the DTC
| • | The ECM receives an invalid cruise control switch status GMLAN serial data message from the BCM. |
| • | The diagnosis runs continuously. |
| • | It lasts for 4 seconds. The above conditions last for 4 seconds. |
Actions Taken When DTC sets
| • | The Cruise Control System is switched off. |
| • | The ECM stores the DTC information into memory when the diagnostic runs and fails. |
| • | The Malfunction Indicator Lamp (MIL) does not illuminate. |
| • | The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | A last test failed, or the current DTC, clears when the diagnosis runs and does not fail. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if failures are not reported by this or any other emission related diagnostic. |
| • | Clear the MIL/DTC with a scan tool. |
Diagnostic Aids
This DTC may be stored as a history DTC without affecting the operation of the BCM. If stored only as a history DTC and not retrieved as a current DTC, do not replace the BCM.
If this DTC is retrieved as both a current and a history DTC, replace the BCM.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Cruise Control Schematics Connector End View Reference: Component Connector End Views | |||
1 | Have you conducted Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Does ECM DTC P0575 set as a current DTC? | Go to Step 3 | Go to Diagnostic Aids |
3 | Replace the body control module (BCM). Refer to Control Module References for replacement, setup, and programming. | Go to Step 4 | -- |
4 |
Is there any DTC set again? | Go to Step 6 | System OK |
5 | Replace the electronic brake control module (EBCM). Refer to Control Module References to replace, set and program. Is the replacement completed? | Go to Step 2 | -- |
6 |
Is there any DTC set again? | Go to Step 2 | System OK |
