PINPOINT TEST D: 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 AND C003A:23 (RR)

WARNING: This page is about a different car, the 2013 Ford Mustang. 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.

D1 CHECK FOR FAULT REPEATABILITY
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Clear Continuous Memory Diagnostic Trouble Codes (CMDTCs).
- Drive the vehicle at least 20 km/h (12 mph).
- Enter the following diagnostic mode on the scan tool: ABS Module Self-Test.
- Is the DTC still present?
- Yes : If the Rotunda Active Wheel Speed Sensor Tester is available, GO to D2. If the Rotunda Active Wheel Speed Sensor Tester is not available, GO to D4.
- No : INSPECT the wheel speed sensors and wheel speed sensor wiring. REPAIR or INSTALL new as necessary. REFER to WHEEL SPEED SENSOR - FRONT or WHEEL SPEED SENSOR - REAR . If any other DTCs are retrieved, REFER to the ABS Module DTC Chart .
D2 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 D3.
- No : GO to D5.
D3 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 overload LED is not illuminated and the sensor output LEDs do not illuminate or if the current overload LED is illuminated red, INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT or WHEEL SPEED SENSOR - REAR .
  CLEAR the DTCs. REPEAT the self-test.
  
  If the current overload 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 or WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.

D4 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	Circuit
LF
C150-1	VCA03 (VT/WH)
C150-2	RCA17 (YE)
RF
C160-1	VCA05 (GY/VT)
C160-2	RCA19 (VT)
LR
C3116-1	VCA04 (BU/OG)
C3116-2	RCA18 (BN/GN)
RR
C3117-1	VCA06 (WH/OG)
C3117-2	RCA20 (BN)

Fig 1: Measuring Voltage Between Suspect Wheel Speed Sensor Connector And Ground

Courtesy of FORD MOTOR CO.

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 D5.

D5 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	Circuit
LF
C150-1	VCA03 (VT/WH)
C150-2	RCA17 (YE)
RF
C160-1	VCA05 (GY/VT)
C160-2	RCA19 (VT)
LR
C3116-1	VCA04 (BU/OG)
C3116-2	RCA18 (BN/GN)
RR
C3117-1	VCA06 (WH/OG)
C3117-2	RCA20 (BN)

Fig 2: Measuring Resistance Between Suspect Wheel Speed Sensor Connector And Ground

Courtesy of FORD MOTOR CO.

Are the resistances greater than 10, 000 ohms?

Yes : GO to D6.
No : REPAIR the affected circuit(s) for a short to ground.
CLEAR the DTCs. REPEAT the self-test.

D6 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:

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	VCA04 (BU/OG)	C3116-1
C135-35	RCA18 (BN/GN)	C3116-2
RR
C135-11	VCA06 (WH/OG)	C3117-1
C135-10	RCA20 (BN)	C3117-2

Fig 3: Measuring Resistance Between ABS Module Connector C135 And Suspect Wheel Speed Sensor Connector

Courtesy of FORD MOTOR CO.

Are the resistances less than 5 ohms?

Yes : GO to D7.
No : REPAIR the affected circuit(s) for an open circuit.
CLEAR the DTCs. REPEAT the self-test.

D7 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS

Measure the resistance between the suspect wheel speed sensor connector, harness side as follows:

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
C3116-1	VCA04 (BU/OG)
C3116-2	RCA18 (BN/GN)
RR
C3117-1	VCA06 (WH/OG)
C3117-2	RCA20 (BN)

Fig 4: Measuring Resistance Between Suspect Wheel Speed Sensor Connectors

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10, 000 ohms?

Yes : GO to D8.
No : REPAIR the affected circuit(s). CLEAR the DTCs.
REPEAT the self-test.

D8 CHECK FOR CORRECT ABS MODULE OUTPUT

Ignition ON.

Measure the voltage between the suspect wheel speed sensor connector, harness side as follows:

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
C3116-1	VCA04 (BU/OG)
C3116-2	RCA18 (BN/GN)
RR
C3117-1	VCA06 (WH/OG)
C3117-2	RCA20 (BN)

Fig 5: Measuring Voltage Between Suspect Wheel Speed Sensor Connectors

Courtesy of FORD MOTOR CO.

Is the voltage greater than 10 volts?

Yes : REPLACE the suspect wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT or WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.
No : GO to D9.

D9 CHECK THE WHEEL SPEED SENSOR OUTPUT
NOTE: The digital multimeter must have the leads in the current sensing ports and the correct range selected.
- Ignition OFF.
- Measure the current between the suspect wheel speed sensor connector, harness side as follows:
  
  Fig 6: Checking Wheel Speed Sensor Output
  Courtesy of FORD MOTOR CO.
- For LF wheel speed sensor:
  - connect the meter between LF wheel speed sensor C150-1, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor pin 1, component side.
  - connect a fused jumper wire between LF wheel speed sensor C150-2, circuit RCA17 (YE), harness side and LF wheel speed sensor pin 2, component side.
- For RF wheel speed sensor:
  - connect the meter between RF wheel speed sensor C160-1, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor pin 1, component side.
  - connect a fused jumper wire between RF wheel speed sensor C160-2, circuit RCA19 (VT), harness side and RF wheel speed sensor pin 2, component side.
    
    Fig 7: Checking Wheel Speed Sensor Output
    Courtesy of FORD MOTOR CO.
- For LR wheel speed sensor:
  - connect the meter between LR wheel speed sensor C3116-1, circuit VCA04 (BU/OG), harness side and LR wheel speed sensor pin 1, component side.
  - connect a fused jumper wire between LR wheel speed sensor C3116-2, circuit RCA18 (BN/GN), harness side and LR wheel speed sensor pin 2, component side.
    
    Fig 8: Checking Wheel Speed Sensor Output
    Courtesy of FORD MOTOR CO.
- For RR wheel speed sensor:
  - connect the meter between RR wheel speed sensor C3117-1, circuit VCA06 (WH/OG), harness side and RR wheel speed sensor pin 1, component side.
  - connect a fused jumper wire between RR wheel speed sensor C3117-2, circuit RCA20 (BN), harness side and RR wheel speed sensor pin 2, component side.
    
    Fig 9: Checking Wheel Speed Sensor Output
    Courtesy of FORD MOTOR CO.
- Ignition ON.
- Measure the current while slightly rotating the wheel, using incremental turns.
- Does the digital multimeter indicate the current switches between the low state (5 to 8 mA) and the high state (12 to 16 mA)?
- Yes : GO to D10.
- No : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT or WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.
D10 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect: ABS Module C135.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect: ABS Module C135.
- 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.