Antilock Brake System (With UGN)
DTC C0060-C0095, C0121, C0141, C0146, C0151, or C0156 (With UGN)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC C0060 00
- Left Front Dump Solenoid Valve Circuit
DTC C0065 00
- Left Front Isolation Solenoid Valve Circuit
DTC C0070 00
- Right Front Dump Solenoid Valve Circuit
DTC C0075 00
- Right Front Isolation Solenoid Valve Circuit
DTC C0080 00
- Left Rear Dump Solenoid Valve Circuit
DTC C0085 00
- Left Rear Isolation Solenoid Valve Circuit
DTC C0090 00
- Right Rear Dump Solenoid Valve Circuit
DTC C0095 00
- Right Rear Isolation Solenoid Valve Circuit
DTC C0121 00
- Valve Relay Circuit
DTC C0141 00
- Front Prime Solenoid Valve Circuit
DTC C0146 00
- Front Isolation Solenoid Valve Circuit
DTC C0151 00
- Rear Prime Solenoid Valve Circuit
DTC C0156 00
- Rear Isolation Solenoid Valve Circuit
Circuit/System Description
The valve relay is located within the electronic brake control module and supplies battery voltage to all of the solenoid valves when commanded On. The solenoid valves are integral parts of the brake pressure modulator. The brake pressure modulator contains an isolation solenoid valve and a dump solenoid valve for each wheel. It also contains a traction/stability control prime solenoid valve and isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, the traction/stability operation is required the electronic brake control module turns the required solenoid valves ON or OFF.
Conditions for Running the DTC
* The valve relay is commanded ON.
* The ignition voltage is greater than 10 V.
* Ignition ON begins the initialization of the brake system power-up self test.
* Drive the vehicle at speeds greater than 16 km/h (10 MPH) to complete the active brake system test.
Conditions for Setting the DTC
* The electronic brake control module detects a valve or solenoid malfunction.
* The electronic brake control module detects an open in the B+ circuit to the valve relay.
Action Taken When the DTC Sets
* The ABS Indicator turns ON.
* The traction/stability control indicator turns ON.
* The electronic brake control module disables the ABS, and the traction/stability for the duration of the ignition cycle.
Conditions for Clearing the DTC
* When the condition for setting the DTC is no longer present.
* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
Reference Information
Schematic Reference
Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
ABS Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Testing
1. Ignition ON.
2. Verify that DTC C0060, C0065, C0070, C0075, C0080, C0085, C0090, C0095, C0121, C0141, C0146, C0151, or C0156 is not set.
• If any of the DTCs are set
Replace the K17 Electronic Brake Control Module with the Brake Pressure Modulator.
• If none of the DTCs are set
3. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Brake Pressure Modulator Valve Replacement Service and Repair
* Control Module References Control Module References for Electronic Brake Control Module replacement, programming and setup