Inspection and Verification
- Verify the customer concern.
- Verify the stoplamp operate correctly by applying and releasing the brake pedal with the ignition switch in the OFF position. If the stoplamp do not operate correctly, refer to EXTERIOR LIGHTING . If the stoplamp operate correctly, proceed to the next step.
- Visually inspect for obvious signs of mechanical or electrical damage:VISUAL INSPECTION CHART
Mechanical Electrical - Brake fluid level
- Tire inflation
- Wheel and tire sizes
- Steering components and suspension components
- Base brake system
- Wheel speed sensor ring
- HCU
- Bussed electrical center (BEC) fuse(s):
- 8 (40A)
- 65 (30A)
- Smart junction box (SJB) fuse 18 (10A)
- Circuitry
- Brake fluid level switch
- Stoplamp switch
- Wheel speed sensor
- Anti-lock brake system (ABS) module
- Traction control switch
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
- If the scan tool does not communicate with the VCM:
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no communication with the scan tool.
- If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the powertrain control module (PCM).
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .
- If the network test passes, retrieve and record continuous memory diagnostic trouble codes (DTCs).
- Clear the continuous DTCs and carry out the self-test diagnostics for the anti-lock brake system (ABS) module.
- If the DTCs retrieved are related to the concern, go to the Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Chart. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES .
- If no DTCs related to the concern are retrieved, go to Symptom Chart .
NOTE:
Make sure to use the latest scan tool software release.
NOTE:
The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTC | Description | Source | Action |
|---|---|---|---|
| B1317 | Battery Voltage High | ABS Module | Go to Pinpoint Test A . |
| B1318 | Battery Voltage Low | ABS Module | Go to Pinpoint Test A . |
| B1342 | ECU is Faulted | ABS Module |
NOTE:
If other DTCs are present, repair them before installing a new module. CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . REPEAT the self-test. |
| C1093 | Traction Control Disable Switch Circuit Failure | Instrument Cluster | Go to Pinpoint Test H . |
| C1095 | ABS Hydraulic Pump Motor Circuit Failure | ABS Module | Go to Pinpoint Test B . |
| C1096 | ABS Hydraulic Pump Motor Circuit Open | ABS Module | Go to Pinpoint Test B . |
| C1115 | ABS Power Relay Output Short Circuit to Battery | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1115 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1145 | Wheel Speed Sensor RF Input Circuit Failure | ABS Module | Go to Pinpoint Test C . |
| C1155 | Wheel Speed Sensor LF Input Circuit Failure | ABS Module | Go to Pinpoint Test C . |
| C1165 | Wheel Speed Sensor RR Input Circuit Failure | ABS Module | Go to Pinpoint Test C . |
| C1175 | Wheel Speed Sensor LR Input Circuit Failure | ABS Module | Go to Pinpoint Test C . |
| C1185 | ABS Power Relay Output Circuit Failure | ABS Module | CLEAR all DTCs. If DTC C1185 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1194 | ABS Outlet Valve Coil LF Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1194 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1198 | ABS Inlet Valve Coil LF Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1198 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1210 | ABS Outlet Valve Coil RF Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1210 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1214 | ABS Inlet Valve Coil RF Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1214 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1222 | Wheel Speed Mismatch | ABS Module | Go to Pinpoint Test D . |
| C1233 | Wheel Speed LF Input Signal Missing | ABS Module | Go to Pinpoint Test D . |
| C1234 | Wheel Speed RF Input Signal Missing | ABS Module | Go to Pinpoint Test D . |
| C1235 | Wheel Speed RR Input Signal Missing | ABS Module | Go to Pinpoint Test D . |
| C1236 | Wheel Speed LR Input Signal Missing | ABS Module | Go to Pinpoint Test D . |
| C1242 | ABS Outlet Valve Coil LR Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1242 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1246 | ABS Outlet Valve Coil RR Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1246 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1250 | ABS Inlet Valve Coil LR Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1250 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1254 | ABS Inlet Valve Coil RR Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1254 is retrieved again, INSTALL a new ABS module. INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1329 | ABS Valve Outlet Coil Over RF Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1329 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1330 | ABS Valve Outlet Coil Over LR Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1330 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1331 | ABS Valve Outlet Coil Over RR Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1331 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1332 | ABS Valve Outlet Coil Over LF Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1332 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1333 | ABS Valve Inlet Coil Over RF Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1333 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1334 | ABS Valve Inlet Coil Over LR Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1334 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1335 | ABS Valve Inlet Coil Over RR Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1335 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1336 | ABS Valve Inlet Coil Over LF Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1336 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1404 | Traction Control Valve Rear Circuit Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1404 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1446 | Brake Switch Circuit Failure | ABS Module | Go to Pinpoint Test E . |
| C1527 | ABS TC Valve Inlet Coil Over Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1527 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1531 | ABS TC Valve Outlet Coil Over Temperature | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1531 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1730 | Reference Voltage Out of Range (+5 V) | ABS Module | If any other DTC(s) are present, DIAGNOSE those DTC(s) first. CLEAR all DTCs. DRIVE the vehicle. If the DTC is still present, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| C1958 | ABS TC Valve Outlet Coil Failure | ABS Module | CLEAR all DTCs. DRIVE the vehicle. If DTC C1958 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CARRY OUT the self-test with the brake pedal not applied. |
| U0073 | CAN Bus Off - Transmit Error | ABS Module | REFER to MODULE COMMUNICATIONS NETWORK . |
| U1900 | CAN Communication Bus Fault - Receive Error | ABS Module | REFER to MODULE COMMUNICATIONS NETWORK . |
| U2011 | Module Transmitted Invalid Data | ABS Module | VERIFY powertrain control module (PCM) configuration. If PCM is not correctly configured, CONFIGURE the PCM. If the PCM is correctly configured, REFER to MODULE COMMUNICATIONS NETWORK . |
| U2050 | No Application Present | ABS Module | CONFIGURE the ABS module. REFER to MODULE CONFIGURATION . CLEAR the DTCs. RETRIEVE the DTCs and VERIFY successful module configuration. If DTC U2050 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CLEAR the DTC. REPEAT the self-test. |
| U2051 | One or More Calibration Files Missing or Corrupt | ABS Module | CALIBRATE the ABS module, follow the directions on the scan tool. CLEAR the DTCs. CARRY OUT the ABS module self-test. RETRIEVE and RECORD any DTCs. If DTC U2051 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CLEAR the DTC. REPEAT the self-test. |