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 tire
pressure and temperature data to the body control module (BCM). The
tire 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 tire 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 tire 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
Tire Pressure Monitor Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. |
Verify DTC C0750, C0755,
C0760, or C0765 is not set. |
⇒ If the DTC is
set
|
1.1 |
Replace the appropriate B2
tire pressure sensor. |
|
1.2 |
Drive the vehicle for at least
9 minutes above 40 km/h (25 MPH). |
⇓ If the DTC is not
set
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the repair.
Tire Pressure Indicator Sensor Replacement
|