Inspection and Verification
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Verify the stoplamps operate correctly by pressing and releasing the brake pedal with the ignition switch in the ON position. If the stoplamps do not operate correctly, refer to STOPLAMPS . If the stoplamps operate correctly, proceed to the next step.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION TABLE
Mechanical Electrical - Incorrectly inflated tires
- Mismatched wheels or tires on vehicle
- Base brake system
- Wheel speed sensor
- Hydraulic control unit (HCU)
- Battery junction box (BJB) fuse(s):
- 9 (40A)
- 12 (20A)
- Smart junction box (SJB) fuse 19 (10A)
- Circuitry
- Stoplamp switch
- Traction control switch
- Wheel speed sensors
- Anti-lock brake system (ABS) module
- If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to PINPOINT TEST M: NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION and PINPOINT TEST N: NO MEDIUM SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION .
- No response/not equipped for the ABS module, GO to PINPOINT TEST A .
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the ABS module.
- If the DTCs retrieved are related to the concern, go to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
- If no DTCs related to the concern are retrieved, GO to SYMPTOM TABLE .
ANTI-LOCK BRAKE SYSTEM MODULE DIAGNOSTIC TROUBLE CODE INDEX
| DTCS | Source | Description | Action |
|---|---|---|---|
| B1342 | ABS | ECU Is Faulted | CLEAR the DTCs. RETRIEVE the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . REPEAT the self-test. |
| B1484 | ABS | Brake Pedal Input Open Circuit | GO to PINPOINT TEST B . |
| B1596 | ABS | Service Continuous Codes |
NOTE:
If other DTCs are present, REPAIR them before installing a new component. CLEAR the DTCs.CYCLE the ignition switch.RETRIEVE the DTCs.If only DTC B1596 is present, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . REPEAT the self-test. |
| B1676 | ABS | Battery Pack Voltage Out of Range | GO to PINPOINT TEST C . |
| B2477 | ABS | Module Configuration Failure | CONFIGURE the ABS module using As Built Data and correct tire size. REFER to AS-BUILT DATA CENTER . CLEAR the DTCs. RETRIEVE the DTCs, and verify successful module configuration. If DTC B2477 is retrieved again, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . REPEAT the self-test. |
| B2900 | ABS | VIN Mismatched | VERIFY the VIN data, the ABS module, and the PCM have the correct as-built data. |
| C1145 | ABS | Speed Wheel Sensor RF Input Circuit Failure | GO to PINPOINT TEST D . |
| C1155 | ABS | Speed Wheel Sensor LF Input Circuit Failure | GO to PINPOINT TEST D . |
| C1165 | ABS | Speed Wheel Sensor RR Input Circuit Failure | GO to PINPOINT TEST D . |
| C1175 | ABS | Speed Wheel Sensor LR Input Circuit Failure | GO to PINPOINT TEST D . |
| C1222 | ABS | Wheel Speed Sensor Mismatch | GO to PINPOINT TEST F . |
| C1266 | ABS | ABS Valve Power Relay Circuit Failure | GO to PINPOINT TEST E . |
| C1296 | ABS | Wheel Speed LF Signal Fault | GO to PINPOINT TEST F . |
| C1297 | ABS | Wheel Speed RF Signal Fault | GO to PINPOINT TEST F . |
| C1298 | ABS | Wheel Speed RR Signal Fault | GO to PINPOINT TEST F . |
| C1299 | ABS | Wheel Speed LR Signal Fault | GO to PINPOINT TEST F . |
| C1300 | ABS | ABS Hydraulic Pump Motor Circuit Failure | GO to PINPOINT TEST G . |
| C1805 | ABS | Mismatched PCM and/or ABS/TC Module | CHECK the part numbers. INSTALL the correct module. REFER to INSTALLATION for the PCM, or ANTI-LOCK BRAKE SYSTEM (ABS) MODULE for the ABS module. Verify correct module and tire size configuration. |
| U0073 | ABS | Control Module Communication Bus Off | REFER to MODULE COMMUNICATIONS NETWORK . |
| U1900 | ABS | CAN communication Bus Fault - Receive error | REFER to PINPOINT TEST M: NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION and PINPOINT TEST N: NO MEDIUM SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION . |
| U2023 | ABS | Fault received from External Node | If any other DTCs are present, DIAGNOSE those 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 . |
For a complete master list of ABS DTCs, refer to DIAGNOSTIC TROUBLE CODE TABLE .
INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| C1093 | Traction Control Disable Switch Circuit Failure | Instrument Cluster | GO to PINPOINT TEST K . |