DTC C0750, C0755, C0760, or C0765
Diagnostic Instructions
DTC Descriptor
DTC C0750 03: Left Front Tire Pressure Sensor Low Voltage
DTC C0750 29: Left Front Tire Pressure Sensor Too Few Pulses
DTC C0750 39: Left Front Tire Pressure Sensor Internal Malfunction
DTC C0755 03: Right Front Tire Pressure Sensor Low Voltage
DTC C0755 29: Right Front Tire Pressure Sensor Too Few Pulses
DTC C0755 39: Right Front Tire Pressure Sensor Internal Malfunction
DTC C0760 03: Left Rear Tire Pressure Sensor Low Voltage
DTC C0760 29: Left Rear Tire Pressure Sensor Too Few Pulses
DTC C0760 39: Left Rear Tire Pressure Sensor Internal Malfunction
DTC C0765 03: Right Rear Tire Pressure Sensor Low Voltage
DTC C0765 29: Right Rear Tire Pressure Sensor Too Few Pulses
DTC C0765 39: Right Rear Tire Pressure Sensor Internal Malfunction
Circuit/System Description
The tire pressure monitor system has a radio frequency 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 Drive mode. The remote control door lock receiver receives and then sends the tyre pressure and temperature data to the body control module (BCM). The tyre pressure indicator module sends sensor ID and location data to the BCM. The BCM translates the data contained in the tire pressure sensor radio frequency transmissions into sensor presence, sensor mode, and tire pressure. Once vehicle speed is greater than 40 km/h (25 MPH), the remote control door lock receiver waits for the sensors to go into Drive mode. If one or more sensors do not go into Drive mode, or do not transmit at all, the BCM 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 or transmits invalid data to the BCM. |
| • | The tyre pressure indicator module does not send or sends invalid data to the BCM. |
| • | A sensor low battery condition. |
Action Taken When the DTC Sets
| • | The tyre pressure monitor system indicator icon on the instrument cluster flashes for 1 min and then remains illuminated after the power switch is cycled ON and the instrument cluster bulb check is complete. |
| • | If equipped, the driver information center 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 power cycle occurs.
Diagnostic Aids
| • | Aftermarket wheel valve system 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. |
| • | Occasionally sensor transmissions are not received by the remote control door lock receiver due to vehicle level radio frequency interference from items such as but not limited to aftermarket power systems, DVD players, CB radios, or metallic type window tinting. |
Reference Information
Schematic Reference
Tire Pressure Monitoring System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Tyre Pressure Monitor Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify DTC C0750, C0755, C0760, or C0765 is not set.
| 1.1. | Replace the appropriate B2 tyre pressure sensor. |
| 1.2. | Drive the vehicle for at least 9 minutes above 40 km/h (25 MPH). |
- All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Tire Pressure Indicator Sensor Replacement
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