PINPOINT TEST E: DTCs C1222, C1296, C1297, C1298 AND C1299

WARNING: This page is about a different car, the 2012 Ford Pickup. 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.

NOTE: If the ignition is turned to ON when one or more wheel speed sensors are disconnected, the ABS module disables the output to that sensor. Make sure all test connectors are made at the sensor before turning the ignition to ON.

E1 CHECK THE ABS MODULE DTCs
- Review the ABS module DTCs retrieved and recorded during Inspection and Verification.
- Is DTC C1145, C1155, C1165 or C1175 also present?
  - Yes : GO to Pinpoint Test D .
  - No : GO to E2.
E2 MONITOR THE WHEEL SPEED SENSOR PIDs
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
- While driving the vehicle at the speed at which the concern occurred, monitor the following PIDs:
  - Left Front Wheel Speed Sensor (LF_WSPD)
  - Right Front Wheel Speed Sensor (RF_WSPD)
  - Left Rear Wheel Speed Sensor (LR_WSPD)
  - Right Rear Wheel Speed Sensor (RR_WSPD)
- Are the wheel speed sensor PIDs consistent with the vehicle speed and each other?
  - Yes : CLEAR the DTCs. DRIVE the vehicle. REPEAT the self-test. RETRIEVE and RECORD any ABS module DTCs.
    If DTC C1296, C1297, C1298 or C1299 returns, GO to E11.
    
    If DTC C1222 is present, GO to E10.
    
    For all other ABS module DTCs, GO to the ABS Module DTC Chart .
    
    If no DTCs return, INSPECT the ABS module and wheel speed sensor connectors for corrosion, pushed-out pins, or damaged pins and REPAIR if necessary. If all connectors are OK, GO to E7.
  - No : If the Rotunda Active Wheel Speed Sensor Tester is available, GO to E3.
    If the Rotunda Active Wheel Speed Sensor Tester is not available, GO to E5.
E3 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.
- Select the correct system polarity on the Rotunda Active Wheel Speed Sensor Tester and turn the power switch to the ON position. Ignition ON.
- Is the module output LED illuminated?
  - Yes : GO to E4.
  - No : GO to E6.
E4 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 : INSPECT the wheel speed sensor tone ring for damage and looseness. INSTALL new components as necessary. If the tone ring is OK, 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 or Wheel Speed Sensor - Rear . 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, INSPECT the wheel speed sensor tone ring and INSTALL new if necessary. If the tone ring is OK, INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front or Wheel Speed Sensor - Rear . CLEAR the DTCs. REPEAT the self-test.
E5 CHECK THE ABS MODULE OUTPUT
NOTE: Make sure all test connections are made at the wheel speed sensor before the ignition is turned to the ON position.

NOTE: Use a meter with a min/max feature and/or recording capabilities to obtain accurate measurements. The ABS module disables the voltage output immediately if the wheel speed sensor is not present.
- Ignition OFF.
- Connect the meter to the suspect wheel speed sensor electrical connector pins, harness side.
- Enable the min/max or recording feature.
- Ignition ON.
- Check the maximum recorded voltage on the meter.
- Is the maximum recorded voltage greater than 10 volts?
  - Yes : GO to E7.
  - No : GO to E6.

E6 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR AN OPEN

NOTE: Check both circuits for each DTC.

Ignition OFF.
Disconnect: ABS Module C135.
Disconnect: Suspect Wheel Speed Sensor.

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

ABS Module	Circuit	Wheel Speed Sensor
C135-21	VCA03 (VT/WH)	C150-1 (LF)
C135-34	RCA17 (YE)	C150-2 (LF)
C135-18	VCA05 (GY/VT)	C160-1 (RF)
C135-6	RCA19 (VT)	C160-2 (RF)
C135-19	VCA06 (WH/OG)	C426-1 (RR)
C135-31	RCA20 (BN)	C426-2 (RR)
C135-33	VCA04 (BU/OG)	C440-1 (LR)
C135-20	RCA18 (BN/GN)	C440-2 (LR)

Fig 1: Measuring Resistance Between ABS Module Connector, Harness Side And Suspect Wheel Speed Sensor Connector, Harness Side

Courtesy of FORD MOTOR CO.

Are the resistances less than 5 ohms?
- Yes : GO to E11.
- No : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.

E7 CHECK THE WHEEL SPEED SENSOR AND MOUNTING
- With the vehicle in NEUTRAL, position it on a hoist. REFER to JACKING & LIFTING .
- Inspect the wheel speed sensor for looseness.
- Is the wheel speed sensor and mounting OK?
  - Yes : GO to E9.
  - No : TIGHTEN the wheel speed sensor to specification. REFER to Specifications . CLEAR the DTCs. GO to E8.
E8 RECHECK THE WHEEL SPEED SENSOR PIDs
- While driving the vehicle at a constant speed, monitor the following PIDs:
  - Left Front Wheel Speed (LF_WSPD)
  - Right Front Wheel Speed (RF_WSPD)
  - Left Rear Wheel Speed (LR_WSPD)
  - Right Rear Wheel Speed (RR_WSPD)
- Are all the wheel speed sensor PID values similar?
  - Yes : The vehicle is OK. The concern may have been caused by a loose wheel speed sensor.
  - No : GO to E9.
E9 CHECK THE WHEEL SPEED SENSOR(S) FOR DAMAGE
- Ignition OFF.
- With the vehicle in NEUTRAL, position it on a hoist. REFER to JACKING & LIFTING .
- Remove the wheel speed sensor. Refer to Wheel Speed Sensor - Front or Wheel Speed Sensor - Rear .
- NOTE: Use a good light source and carefully examine the wheel speed sensor wire. Failure to verify damage in the wheel speed sensor wire can lead to unnecessary installation of a new component.
- Inspect the wheel speed sensor and attached wire harness for general damage.
- Is the wheel speed sensor and harness OK?
  - Yes : For DTC C1296 or C1297, INSTALL a new wheel hub and bearing (wheel speed sensor tone rings are part of the wheel hub and bearing assembly). REFER to FRONT SUSPENSION - REAR WHEEL DRIVE (RWD) or FRONT SUSPENSION - FOUR WHEEL DRIVE (4WD) . For DTC C1298 or C1299, INSTALL a new wheel speed sensor tone ring. REFER to Wheel Speed Sensor Ring - Rear . CLEAR the DTCs. REPEAT the self-test.
  - No : INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front or Wheel Speed Sensor - Rear . CLEAR the DTC. REPEAT the self-test.
E10 CHECK THE ABS MODULE CONFIGURATION
- Verify that the tires are the correct size for the vehicle and inflated to the specified pressures as indicated on the Vehicle Certification (VC) label.
- Carry out the ABS module configuration. Verify that the vehicle data matches the vehicle options. Refer to Programmable Module Installation (PMI) in MODULE CONFIGURATION .
- Clear the DTCs. Carry out the ABS module on-demand self-test.
- Is DTC C1222 still present?
  - Yes : GO to E11.
  - No : The system is operating correctly at this time. The concern may have been caused by an incorrectly configured ABS module.
E11 CHECK FOR CORRECT ABS MODULE OPERATION
- Ignition OFF.
- Disconnect: ABS Module C135.
- Check ABS module connector for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect: ABS Module C135.
- Make sure the connector seats correctly, then operate the system and verify the concern is still present.
- Is the concern still present?
  - Yes : INSPECT the wheel speed sensor tone rings for damage. INSTALL new components as necessary. If the tone rings are OK, 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.