Pinpoint Test J: DTC C1996
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- J1 CHECK FOR ABS MODULE DTCs
- Review the DTCs recorded during Inspection and Verification.
- Are any DTCs other than C1996 present?
- Yes : REPAIR all other DTCs before repairing C1996. GO to the ABS MODULE DTC TABLE in this service information.
- No : GO to J2.
- J2 CHECK RETURNING DTCs
- Connect the scan tool.
- Ignition ON.
- Using the scan tool, clear all ABS module DTCs.
- Cycle the ignition switch from RUN to OFF and back to RUN.
- Test drive the vehicle above 49 km/h (30 mph).
- Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
- Are any ABS module DTCs present?
- Yes
: If only
DTC C1996 is present, GO to J3.
If DTC C1996 is present along with other DTCs, REPAIR the other DTCs before repairing DTC C1996. GO to the ABS MODULE DTC TABLE in this service information.
- No : The condition is not present at this time.
- J3 CHECK 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, have an assistant monitor the following wheel speed sensor 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)
- Do all the PIDs match the vehicle speed and match each other?
- Yes : GO to J8.
- No : GO to J4.
- J4 INSPECT THE WHEEL SPEED SENSOR MOUNTING
- Ignition OFF.
- With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING & LIFTING article.
- Verify the bolt of the suspect wheel speed sensor is tightened to specifications.
- the bolt tightened to specifications?
- Yes : GO to J5.
- No : TIGHTEN the wheel speed sensor bolt to specification. REFER to SPECIFICATIONS in this service information. CLEAR the DTCs.
- J5 INSPECT THE WHEEL SPEED SENSOR AND HARNESS FOR DAMAGE
- Inspect the suspect wheel speed sensor and harness for cuts, broken tabs, broken casing and/or corrosion.
- Are the wheel speed sensor and harness OK?
NOTE: Examine the wheel speed sensor harness carefully with a good light source. Failure to verify damage in the sensor harness can lead to unnecessary installation of a new component.- Yes : GO to J6.
- No : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT , WHEEL SPEED SENSOR - REAR, ALL WHEEL DRIVE (AWD) or WHEEL SPEED SENSOR - REAR, FRONT WHEEL DRIVE (FWD) in this service information. CLEAR the DTCs. REPEAT the self-test.
- J6 INSPECT THE WHEEL SPEED SENSOR RING FOR DAMAGE
- Inspect the suspect wheel speed sensor ring for cracks, chips or missing teeth. Rotate the wheel to verify that no teeth are missing.
- Is the wheel speed sensor ring OK?
NOTE: Examine the wheel speed sensor ring carefully with a good light source. Failure to verify damage in the sensor ring can lead to unnecessary installation of a new component.- Yes : GO to J7.
- No : INSTALL a new wheel hub and bearing assembly (wheel speed sensor rings are part of the wheel hub and bearing assembly). Refer to the appropriate service information in SUSPENSION SYSTEM - GENERAL INFORMATION -- FUSION, MILAN & MKZ for the procedure. CLEAR the DTCs. REPEAT the self-test.
- J7 INSPECT THE WHEEL BEARING FOR DAMAGE AND LOOSENESS
- Verify that the wheel bearing has no end-play and is undamaged.
- Is the wheel bearing OK?
- Yes : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT , WHEEL SPEED SENSOR - REAR, ALL WHEEL DRIVE (AWD) or WHEEL SPEED SENSOR - REAR, FRONT WHEEL DRIVE (FWD) in this service information. CLEAR the DTCs. REPEAT the self-test.
- No : INSTALL a new wheel hub and bearing assembly (wheel speed sensor rings are part of the wheel hub and bearing assembly). Refer to the appropriate service information in SUSPENSION SYSTEM - GENERAL INFORMATION -- FUSION, MILAN & MKZ for the procedure. CLEAR the DTCs. REPEAT the self-test.
- J8 CHECK THE ABS MODULE YAW RATE (YAWRATE) PID
- Monitor the YAWRATE PID.
- Is the YAWRATE PID value between -0.05 and 0.05?
NOTE: The vehicle must be on level ground and at a complete standstill. Any vehicle movement results in false values for this test.- Yes : GO to J9.
- No : GO to J11.
- J9 CHECK THE ABS MODULE LATERAL ACCELERATION (LAT_ACCL) PID
- Monitor the LAT_ACCL PID.
- Is the LAT_ACCL PID value between -0.4 and 0.4?
NOTE: The vehicle must be on level ground and at a complete standstill. Any vehicle movement results in false values for this test. - J10 CHECK THE ABS MODULE LONGITUDINAL ACCELERATION (LONG_ACCL) PID
- Monitor the LONG_ACCL PID.
- Is the LONG_ACCL PID value between -0.4 and 0.4?
NOTE: The vehicle must be on level ground and at a complete standstill. Any vehicle movement results in false values for this test.- Yes : GO to J12.
- No : GO to J11.
- J11 CHECK THE RCM INSTALLATION AND MOUNTING SURFACE
- Ignition OFF.
- Gain access to the RCM and inspect the RCM installation. Make sure that the nuts are fully seated and tightened correctly. Refer to SUPPLEMENTAL RESTRAINT SYSTEM -- FUSION, MILAN & MKZ article.
- Inspect the mounting surface for damage, corrosion or dirt.
- Is the RCM installed correctly and is the mounting surface clean and free from damage?
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.- Yes : INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM -- FUSION, MILAN & MKZ article. TEST the system for normal operation.
- No : REPAIR, REINSTALL or INSTALL new as necessary. CLEAR the DTC. REPEAT the self-test.
- J12 CHECK THE STEERING WHEEL ANGLE SENSOR POSITION (SWA POS) PID NOTE: For all vehicles except those with a 3.5L engine, the steering wheel angle information is sent to the ABS module from the PSCM over the HS-CAN bus.
- Monitor the SWA POS PID while rotating the steering wheel clockwise and counterclockwise very slowly, from lock to lock.
- Does the PID change in intervals of 1.5 degrees on vehicles with a 3.5L engine (intervals of 0.05-0.25 degrees on all other vehicles) and show a 360-degree increase for each complete revolution of the steering wheel?
- Yes : GO to J13.
- No
: For vehicles equipped with a 3.5L engine, INSTALL a new steering wheel rotation sensor. REFER to STEERING WHEEL ROTATION SENSOR in this service information. CLEAR the DTCs. REPEAT the self-test.
For all other vehicles, CARRY OUT a self-test of the PSCM. REFER to STEERING SYSTEM - ELECTRONIC POWER ASSIST STEERING (EPAS) article.
- J13 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect: ABS Module C155.
- Check the connector for:
- corrosion.
- pushed-out pins.
- spread terminals.
- Connect: ABS Module C155.
- Make sure the ABS module electrical connector is fully seated, 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 in this service information. CLEAR the DTCs. REPEAT the self-test.
- 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.