Buick Enclave: Diagnostic Information and Procedures
DIAGNOSTIC CODE INDEX
DTC C0569: SYSTEM CONFIGURATION ERROR
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 C0569 00
- System Configuration Error
Circuit/System Description
If the tire type and pressure selection information is not entered with the scan tool during the remote control door lock receiver (RCDLR) setup, the tire pressure monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the ignition switch is cycled ON and the IPC bulb check is complete. If equipped, the driver information center (DIC) will also display a service tire monitor type message. Under these circumstances, DTC C0569 will be set and the tire type and pressure information will need to be entered for the system to function correctly.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The RCDLR has not undergone the programming procedure.
Action Taken When the DTC Sets
- The tire pressure monitor indicator icon on the instrument panel cluster (IPC) flashes for 1 minute and then remains illuminated after the ignition switch is cycled ON and the IPC bulb check is complete.
- If equipped, the driver information center (DIC) displays the suspect tire pressure as dashes.
- If equipped, the DIC displays a service tire monitor type message.
Conditions for Clearing the DTC
A current DTC will clear when the RCDLR has undergone the tire type and pressure selection setup procedure and 1 ignition cycle has occurred.
Diagnostic Aids
A newly replaced RCDLR will set DTC C0569 after programming on its initial ignition ON cycle if the module setup information has not been entered. The Tire Type and Tire Pressure Selection setup must be performed with the scan tool.
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Verify that the DTC C0569 is not set.
- If the DTC is set, perform the RCDLR tire type and pressure selection setup with the scan tool and cycle the ignition. If the DTC resets, replace the RCDLR.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for RCDLR replacement, setup and programming
DTC C0750, C0755, C0760 OR C0765: LOW TIRE PRESSURE SENSOR
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 C0750 00
- Left Front Low Tire Pressure Sensor
DTC C0750 08
- Left Front Low Tire Pressure Sensor Signal Invalid
DTC C0755 00
- Right Front Low Tire Pressure Sensor
DTC C0755 08
- Right Front Low Tire Pressure Sensor Signal Invalid
DTC C0760 00
- Left Rear Low Tire Pressure Sensor
DTC C0760 08
- Left Rear Low Tire Pressure Sensor Signal Invalid
DTC C0765 00
- Right Rear Low Tire Pressure Sensor
DTC C0765 08
- Right Rear Low Tire Pressure Sensor Signal Invalid
Circuit/System Description
The tire pressure monitor (TPM) system has a radio frequency (RF) transmitting pressure sensor in each wheel/tire assembly. As vehicle speed increases, centrifugal force closes the sensors internal roll switch, which puts the sensor into Rolling mode. The remote control door lock receiver (RCDLR) receives and translates the data contained in the tire pressure sensor RF transmissions into sensor presence, sensor mode and tire pressure.
Once vehicle speed is greater than 40 km/h (25 mph), the RCDLR waits for the sensors to go into rolling mode.
If one or more sensors do not go into rolling mode or do not transmit at all, the RCDLR will set DTC C0750, C0755, C0760 or C0765 respectively.
Conditions for Running the DTC
Vehicle speed is greater than 40 km/h (25 mph).
Conditions for Setting the DTC
- A sensor does not transmit for 18 minutes.
- A sensor low battery condition.
Action Taken When the DTC Sets
- The tire pressure monitor indicator icon on the instrument panel cluster (IPC) flashes for 1 minute and then remains illuminated after the ignition switch is cycled ON and the IPC bulb check is complete.
- If equipped, the driver information center (DIC) displays the suspect tire pressure as dashes.
- If equipped, the DIC displays a service tire monitor type message.
Conditions for Clearing the DTC
- A current DTC will clear when the malfunction is no longer present and 1 ignition cycle occurs.
- The RCDLR automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
- Some aftermarket wheel valve stem holes are located further from the wheel rim than original equipment wheels. When using the TPM special tool to activate a sensor, ensure the tool antenna is no further than 15 cm (6 in) from the sensor and is aiming upward.
- Aftermarket wheel valve stem locations can cause a sensor to not function correctly.
- A sensor may have been damaged due to a previous wheel/tire service or flat tire event.
- The use of other than GM approved tire sealants can obstruct the sensor pressure sensing port and cause inaccurate tire pressure readings. If this condition is verified, remove the sealer from the tire and replace the sensor. Refer to Tire Pressure Indicator Sensor Replacement (Snap In Style).
- Occasionally sensor transmissions are not received by the RCDLR due to vehicle level RF interference from items such as but not limited to aftermarket ignition systems, DVD players, CB radios or metallic type window tinting.
- The sensor activation procedure may have to be repeated up to 3 times before determining a sensor is malfunctioning. In the event a particular sensor's information is displayed on the special tool upon activation but the horn does not chirp, it may be necessary to rotate the wheel valve stem to a different position due to the RF signal is being blocked by another component.
- Occasionally sensors can become mislocated due to previous tire
rotations where the sensor learn
procedure was not performed or stray sensor transmissions have been received
from other vehicles.
Always learn the sensors to ensure the DTC set is for that actual physical corner of the vehicle. Refer to Tire Pressure Indicator Sensor Learn.
- A sensor low battery condition will set a sensor DTC but will not illuminate the low tire pressure indicator or display a message on the DIC, if equipped. The sensor battery condition can be verified in the scan tool RCDLR data list. If a sensor low battery condition is indicated on the scan tool, the sensor will need to be replaced. Refer to Tire Pressure Indicator Sensor Replacement (Snap In Style).
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Special Tools
- EL-46079/J-46079 Tire Pressure Monitor Diagnostic Tool
Circuit/System Verification
1. Using the EL-46079/J-46079 tool, activate each tire pressure sensor and record each sensors transmission data and physical location. Verify EL-46079/J-46079 tool displays the 8-digit ID number, accurate tire pressure +-27.6 kPa (4 psi), Learn Mode and at least a 1/4 graph signal strength displayed.
- If any of the parameters listed above are not displayed, replace the suspect tire pressure sensor.
2. With the scan tool, verify tire pressure sensors ID and locations displayed on the scan tool match the IDs and locations recorded from the special tool.
- If the IDs and locations do not match, perform the Tire Pressure Indicator Sensor Learn.
3. Enable the TPM learn mode. Use the EL-46079/J-46079 tool in simulate mode to learn 4 simulated sensor transmissions into the RCDLR. Verify that all 4 simulated sensor locations, IDs and tire pressures displayed on the TPM special tool match the corresponding scan tool parameters displayed.
- If the scan tool does not match, replace the RCDLR.
4. Test drive the vehicle above 40 km/h (25 mph) for greater than 2 minutes. With the scan tool, observe the suspect Pressure Sensor Mode data parameter. Verify the sensor mode changes to Rolling.
- If the Pressure Sensor Mode does not change, replace the suspect tire pressure sensor.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Tire Pressure Indicator Sensor Replacement (Snap In Style)
- Tire Pressure Indicator Sensor Learn
- Control Module References for RCDLR replacement, programming and setup
DTC C0775: LOW TIRE PRESSURE SYSTEM SENSORS NOT LEARNED
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 C0775
- Low Tire Pressure System Sensors Not Learned
Circuit/System Description
If the tire pressure sensor learn procedure has not been performed, the tire pressure monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the ignition switch is cycled ON and the IPC bulb check is complete. If equipped, the driver information center (DIC) will also display a service tire monitor type message. Under these circumstances, DTC C0775 will be set and the tire pressure sensor learn procedure will need to be performed for the system to function correctly.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The remote control door lock receiver (RCDLR) has not undergone the tire pressure sensor learn procedure.
Action Taken When the DTC Sets
- The tire pressure monitor indicator icon on the instrument panel cluster (IPC) will flash for 1 minute and then remain illuminated after the ignition switch is cycled ON and the IPC bulb check is complete.
- If equipped, the driver information center (DIC) displays a service tire monitor type warning message.
Conditions for Clearing the DTC
A current DTC will clear when the RCDLR has undergone the tire pressure sensor learn procedure and 1 ignition cycle has occurred.
Diagnostic Aids
A newly replaced RCDLR will set DTC C0775 on its initial ignition ON cycle. The tire pressure sensor learn procedure must be performed.
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Verify that the DTC C0775 is not set.
- If the DTC is set, perform the tire pressure sensor learn procedure. Cycle the ignition. If the DTC resets, replace the RCDLR.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Tire Pressure Indicator Sensor Learn
- Control Module References for RCDLR replacement, setup and programming
SYMPTOMS - TIRE PRESSURE MONITORING
1. Perform the Diagnostic System Check - Vehicle , before using the Symptom Tables in order to verify that all of the following are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Tire Pressure Monitor Description and Operation.
Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the Tire Pressure Monitoring (TPM) System. Refer to Checking Aftermarket Accessories.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections.
Symptom List
Refer to Low Tire Pressure Indicator Malfunction in order to diagnose the symptom.
LOW TIRE PRESSURE INDICATOR MALFUNCTION
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.
Circuit/System Description
The remote control door lock receiver (RCDLR) receives a radio frequency (RF) transmission from each tire pressure sensor. Each sensor has its own unique identification (ID) code, which it transmits as part of each RF message, that must be learned into the RCDLR memory. Once all 4 IDs have been learned and vehicle speed is greater than 40 km/h (25 mph), the RCDLR continuously compares IDs in received transmission to its learned IDs to determine if all 4 sensors are present. If the RCDLR detects a low tire pressure condition or a malfunction in the system, it will send a serial data message to the instrument panel cluster (IPC) requesting the appropriate tire pressure monitor indicator illumination and also to display the appropriate data message on the driver information center (DIC), if equipped.
Diagnostic Aids
- If unsure about the condition, cycle the ignition and observe the tire
pressure monitor indicator icon. If
the tire pressure monitor indicator icon is continuously illuminated after
the IPC bulb check is completed,
a low tire pressure condition is present. Check the tires for damage or
leaks and inflate to the tire placard
specifications. Refer to Vehicle Certification, Tire Placard, Anti-Theft and
Service Parts ID Label.
If the tire pressure monitor indicator icon flashes for 1 minute after the IPC bulb check is completed and then remains illuminated, a tire pressure monitor system DTC is set. Perform the Diagnostic System Check - Vehicle to proceed with the proper diagnosis.
- Temperature can greatly effect tire pressures. Low tire pressure on a cold morning may cause the tire pressure monitor indicator icon to turn ON. The air pressure in the tire increases as the ambient temperature rises or as the tire warms up while the vehicle is driven. The pressure may increase enough to exceed the predetermined low pressure threshold which will turn OFF the tire pressure monitor indicator icon.
- Some aftermarket wheel valve stem holes are located further from the wheel rim than original equipment wheels. When using the TPM special tool to activate a sensor, ensure the tool antenna is no further than 15 cm (6 in) from the sensor and is aiming upward.
- Aftermarket wheel value stem locations can cause a sensor to not function correctly.
- A sensor may have been damaged due to a previous wheel/tire service or flat tire event.
- The use of other than GM approved tire sealants can obstruct the sensor pressure sensing port and cause inaccurate tire pressure readings. If this condition is verified, remove the sealer from the tire and replace the sensor. Refer to Tire Pressure Indicator Sensor Replacement (Snap In Style).
- Occasionally sensor transmissions are not received by the RCDLR due to vehicle level RF interference from items such as but not limited to aftermarket ignition systems, DVD players, CB radios or metallic type window tinting.
- The sensor activation procedure may have to be repeated up to 3 times before determining a sensor is malfunctioning. In the event a particular sensor's information is displayed on the special tool upon activation but the horn does not chirp, it may be necessary to rotate the wheel valve stem to a different position due to the RF signal is being blocked by another component.
- Occasionally sensors can become mislocated due to previous tire
rotations where the sensor learn
procedure was not performed or stray sensor transmissions have been received
from other vehicles.
Always learn the sensors to ensure the DTC set is for that actual physical corner of the vehicle. Refer to Tire Pressure Indicator Sensor Learn.
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Special Tools
- J 46079 Tire Pressure Monitor Diagnostic Tool
Circuit/System Verification
NOTE: Low tire pressure in one or more tires is indicated by a continuously illuminated tire pressure monitor indicator icon after the IPC bulb check is completed. If equipped with a DIC, a check tire pressure type message will also be displayed.
It is not necessary to perform the Learn procedure for a low tire condition.
When a TPM DTC is set, the tire pressure monitor indicator icon will flash for 1 minute after the IPC bulb check is completed and then remains illuminated. If equipped with a DIC, a service tire monitor type message will also be displayed.
1. Verify all tires are inflated to the proper pressure +- 10%. Refer to Vehicle Certification, Tire Placard, Anti-Theft and Service Parts ID Label.
- If not within the specified range, adjust all tire pressures to specification and drive the vehicle over 40 km/h (25 mph) for greater than 2 minutes. Verify the tire pressure monitor indicator icon is OFF.
2. Using the J 46079 tire pressure monitor diagnostic tool, activate each B2 Tire Pressure Sensor and record each sensor tire pressure reading. Check the tire pressures with a known accurate hand held tire pressure gauge. Verify that the pressure readings from the special tool do not differ more than 27.6 kPa (4 psi) from the actual tire pressure readings.
- If not within the specified range, replace the appropriate B2 Tire Pressure Sensor.
3. Using a scan tool, enable the TPM learn mode. Use the J 46079 tire pressure monitor diagnostic tool in simulate mode to learn 4 simulated sensor transmissions into the RCDLR. Observe tire pressures in the scan tool data display. Verify the simulated tire pressures do not differ more than +/-27.6 kPa (4 psi) of the scan tool reading.
- If not within the specified range, replace the RCDLR.
4. Using a scan tool, perform the instrument panel special functions Lamp Test. Command the instrument panel warning lamps ON and OFF. Verify the tire pressure monitor indicator icon turns ON and OFF.
- If the tire pressure monitor icon does not turn ON and OFF, replace the IPC.
5. Ignition ON, use the scan tool to setup the Tire Type/Pressure Selection in the RCDLR Module Setup menu. Refer to the Vehicle Certification, Tire Placard, Anti-Theft and Service Parts ID Label. Drive the vehicle over 40 km/h (25 mph) for greater than 2 minutes. Verify the tire pressure monitor indicator icon is OFF.
- If the tire pressure monitor indicator icon is ON, replace the RCDLR.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Tire Pressure Indicator Sensor Replacement (Snap In Style)
- Tire Pressure Indicator Sensor Learn
- Control Module References for IPC or RCDLR replacement, setup and programming
