PINPOINT TEST S: DTCs C0031:13, C0031:17, C0031:23 (LF), C0034:13, C0034:17, C0034:23 (RF), C0037:13, C0037:17, C0037:23 (LR), C003A:13, C003A:17, C003A:23 (RR)
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- S1 CHECK FOR FAULT REPEATABILITY
- Ignition ON.
- Using a scan tool, clear the ABS module DTCs.
- Drive the vehicle at least 20 km/h (12 mph).
- Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
- Is the DTC still present?
- Yes : If the Rotunda Active Wheel Speed Sensor Tester is available, GO to S2. If the Rotunda Active Wheel Speed Sensor Tester is not available, GO to S4.
- No : INSPECT the wheel speed sensors and wheel speed sensor wiring. REPAIR or INSTALL new as necessary. REFER to WHEEL SPEED SENSOR - FRONT, FOUR WHEEL DRIVE (4WD) or WHEEL SPEED SENSOR - REAR, FOUR-CHANNEL .
- S2 CHECK THE ABS MODULE OUTPUT USING THE ROTUNDA ACTIVE WHEEL SPEED SENSOR TESTER
- Ignition OFF.
- Disconnect: Suspect Wheel Speed Sensor.
- Connect the Rotunda Active Wheel Speed Sensor Tester to the wheel speed sensor connectors.
- Ignition ON.
- Select the correct system polarity on the Rotunda Active Wheel Speed Sensor Tester and turn the power switch to the ON position.
- Is the module output LED illuminated?
- Yes : GO to S3.
- No : GO to S5.
- S3 CHECK THE WHEEL SPEED SENSOR OUTPUT WITH THE ROTUNDA ACTIVE WHEEL SPEED SENSOR TESTER
- Raise the suspect wheel until it can spin freely. Refer to JACKING & LIFTING .
- While monitoring the Rotunda Active Wheel Speed Sensor Tester, slowly spin the suspect wheel.
- Do the sensor output LEDs illuminate and flash and is the current overload LED not illuminated?
- Yes : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
- No
: If the current level LED is not illuminated and the sensor output LEDs do not illuminate or if the current level LED is illuminated red, INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT, FOUR WHEEL DRIVE (4WD) , WHEEL SPEED SENSOR - FRONT, REAR WHEEL DRIVE (RWD) or WHEEL SPEED SENSOR - REAR, FOUR-CHANNEL . CLEAR the DTCs. REPEAT the self-test.
If the current level LED is not illuminated and the sensor output LEDs illuminate green, but do not flash, INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT, FOUR WHEEL DRIVE (4WD) , WHEEL SPEED SENSOR - FRONT, REAR WHEEL DRIVE (RWD) or WHEEL SPEED SENSOR - REAR, FOUR-CHANNEL . CLEAR the DTCs. REPEAT the self-test.
- S4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO BATTERY VOLTAGE
- Ignition OFF.
- Disconnect: ABS Module C135.
- Disconnect: Suspect Wheel Speed Sensor.
- Ignition ON.
- Measure the voltage between the suspect wheel speed sensor connector, harness side and ground as follows:
Wheel Speed Sensor Location Wheel Speed Sensor Circuit LF C150-1 VCA03 (VT/WH) C150-2 RCA17 (YE) RF C160-1 VCA05 (GY/VT) C160-2 RCA19 (VT) LR C440-1 RCA21 (BN/GN) C440-2 VCA07 (BU/OG) RR C426-1 VCA06 (WH/OG) C426-2 RCA20 (BN) - Is any voltage present?
- Yes : REPAIR the affected circuit(s) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
- No : GO to S5.
- S5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: ABS Module C135.
- Measure the resistance between the suspect wheel speed sensor connector, harness side and ground as follows:
Wheel Speed Sensor Location Wheel Speed Sensor Circuit LF C150-1 VCA03 (VT/WH) C150-2 RCA17 (YE) RF C160-1 VCA05 (GY/VT) C160-2 RCA19 (VT) LR C440-1 RCA21 (BN/GN) C440-2 VCA07 (BU/OG) RR C426-1 VCA06 (WH/OG) C426-2 RCA20 (BN) - Are the resistances greater than 10, 000 ohms?
- Yes : GO to S6.
- No : REPAIR the affected circuit(s) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
- S6 CHECK THE WHEEL SPEED CIRCUITS FOR AN OPEN
- Disconnect: Suspect Wheel Speed Sensor.
- Measure the resistance between ABS module connector C135, harness side and the suspect wheel speed sensor connector, harness side as follows:
Wheel Speed Sensor Location ABS Module Circuit Wheel Speed Sensor LF C135-27 VCA03 (VT/WH) C150-1 C135-28 RCA17 (YE) C150-2 RF C135-3 VCA05 (GY/VT) C160-1 C135-4 RCA19 (VT) C160-2 LR C135-36 RCA21 (BN/GN) C440-1 C135-35 VCA07 (BU/OG) C440-2 RR C135-11 VCA06 (WH/OG) C426-1 C135-10 RCA20 (BN) C426-2 - Are the resistances less than 5 ohms?
- Yes : GO to S7.
- No : REPAIR the affected circuit(s) for an open circuit. CLEAR the DTCs. REPEAT the self-test.
- S7 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS
- Measure the resistance between the suspect wheel speed sensor connector, harness side as follows:
Wheel Speed Sensor Location Wheel Speed Sensor Circuit Wheel Speed Sensor LF C150-1 VCA03 (VT/WH)/RCA17 (YE) C150-2 RF C160-1 VCA05 (GY/VT)/RCA19 (VT) C160-2 LR C440-1 RCA21 (BN/GN)/VCA07 (BU/OG) C440-2 RR C426-1 VCA06 (WH/OG)/RCA20 (BN) C426-2 - Is the resistance greater 10, 000 ohms?
- Yes : GO to S8.
- No : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
- Measure the resistance between the suspect wheel speed sensor connector, harness side as follows:
- S8 CHECK FOR CORRECT ABS MODULE OUTPUT
- Connect: ABS Module C135.
- Ignition ON.
- Measure the voltage between the suspect wheel speed sensor connector, harness side.
Wheel Speed Sensor Location Wheel Speed Sensor Circuit Wheel Speed Sensor LF C150-1 VCA03 (VT/WH)/RCA17 (YE) C150-2 RF C160-1 VCA05 (GY/VT)/RCA19 (VT) C160-2 LR C440-1 RCA21 (BN/GN)/VCA07 (BU/OG) C440-2 RR C426-1 VCA06 (WH/OG)/RCA20 (BN) C426-2 - Is the voltage greater than 10 volts?
- Yes : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT, FOUR WHEEL DRIVE (4WD) , WHEEL SPEED SENSOR - FRONT, REAR WHEEL DRIVE (RWD) or WHEEL SPEED SENSOR - REAR, FOUR-CHANNEL . CLEAR the DTCs. REPEAT the self-test.
- No : GO to S9.
- S9 CHECK THE WHEEL SPEED SENSOR OUTPUT
- Ignition OFF.
- Disconnect: Wheel Speed Sensor C150.
- For LF wheel DTCs, connect a fused jumper wire between LF wheel speed sensor C150-1, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor C150, pin 1, circuit VCA03 (VT/WH), component side.
- Connect the automotive meter between LF wheel speed sensor C150-2, circuit RCA17 (YE), harness side and LF wheel speed sensor C150, pin 2, circuit RCA17 (YE), component side.
- For RF wheel DTCs, connect a fused jumper wire between RF wheel speed sensor C160-1, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor C160, pin 1, circuit VCA05 (GY/VT), component side.
- Connect the automotive meter between RF wheel speed sensor C160-2, circuit RCA19 (VT), harness side and RF wheel speed sensor C160, pin 2, circuit RCA19 (VT), component side.
- For LR wheel DTCs, connect a fused jumper wire between LR wheel speed sensor C440-1, circuit VCA07 (BU/OG), harness side and LR wheel speed sensor C440, pin 1, circuit VCA07 (BU/OG), component side.
- Connect the automotive meter between LR wheel speed sensor C440-2, circuit RCA21 (BN/GN), harness side and LR wheel speed sensor C440, pin 2, circuit RCA21 (BN/GN), component side.
- For RR wheel DTCs, connect a fused jumper wire between LF wheel speed sensor C426-1, circuit VCA06 (WH/OG) harness side and RR wheel speed sensor C426, pin 1, circuit VCA06 (WH/OG) component side.
- Connect the automotive meter between RR wheel speed sensor C426-2, circuit RCA20 (BN), harness side and LF wheel speed sensor C426, pin 2, circuit RCA20 (BN), component side.
- Ignition ON.
- Measure the current while slightly rotating the wheel using incremental turns.
- Does the automotive meter switch between the low state (5-8 mA) and the high state (12-16 mA)?
- Yes : GO to S10.
- No : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT, FOUR WHEEL DRIVE (4WD) or WHEEL SPEED SENSOR - REAR, FOUR-CHANNEL . CLEAR the DTCs. REPEAT the self-test.
- S10 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect: ABS Module.
- Check for:
- corrosion
- pushed-out pins
- spread terminals
- Connect: ABS Module.
- Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.