2010 Cadillac Truck SRX FWD V6-3.0L Page 906
C1233
DTC C1207-C1210, C1221-C1228, or C1232-C1235
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC C1207 00
- Left Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1208 00
- Right Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1209 00
- Left Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1210 00
- Right Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1221 00
- Left Front Wheel Speed Sensor Circuit Malfunction
DTC C1222 00
- Right Front Wheel Speed Sensor Circuit Malfunction
DTC C1223 00
- Left Rear Wheel Speed Sensor Circuit Malfunction
DTC C1224 00
- Right Rear Wheel Speed Sensor Circuit Malfunction
DTC C1225 00
- Left Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1226 00
- Right Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1227 00
- Left Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1228 00
- Right Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1232 00
- Left Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1233 00
- Right Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1234 00
- Left Rear Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1235 00
- Right Rear Wheel Speed Sensor Circuit Low Input Malfunction
Circuit/System Description
The wheel speeds are detected by active wheel speed sensors. Each wheel speed sensor receives a 12 V reference voltage from the electronic brake
control module (EBCM) and provides an alternating current square wave signal to the EBCM. As the wheel spins, the EBCM uses the frequency of
the square wave signal to calculate the wheel speed. The EBCM sends the wheel speed information as a high speed controller area network (CAN)
