Buick Enclave manuals

Buick Enclave: Diagnostic Information and Procedures

DIAGNOSTIC CODE INDEX

Buick Enclave. Tire Pressure Monitoring System

DTC C0569: SYSTEM CONFIGURATION ERROR

Diagnostic Instructions

DTC Descriptor

DTC C0569 00

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

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.

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

DTC Descriptors

DTC C0750 00

DTC C0750 08

DTC C0755 00

DTC C0755 08

DTC C0760 00

DTC C0760 08

DTC C0765 00

DTC C0765 08

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

Action Taken When the DTC Sets

Conditions for Clearing the DTC

Diagnostic Aids

Reference Information

Description and Operation

Tire Pressure Monitor Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

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.

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.

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.

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.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

DTC C0775: LOW TIRE PRESSURE SYSTEM SENSORS NOT LEARNED

Diagnostic Instructions

DTC Descriptor

DTC C0775

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

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

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Verify that the DTC C0775 is not set.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

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:

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

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

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

Reference Information

Description and Operation

Tire Pressure Monitor Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

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.

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.

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.

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.

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.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

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 Repair Instructions

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 Description and Operation

TIRE PRESSURE MONITOR DESCRIPTION AND OPERATION The tire pressure monitor (TPM) system warns the driver when a significant loss or gain of tire pressure occurs in any of the 4 tires and allows the dr

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 Tire Pressure Monitor

This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS warning light alerts you to a significant loss in pressure of one of the vehicle's tires. If the warning light comes on, stop as soon as possible and inflate the tires to the recommended pressure shown on the Tire and L

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