Pinpoint Test Ab: DTC P185D:00
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Make sure the battery is fully charged before carrying out this pinpoint test.
- AB1 CHECK THE ABS MODULE WHEEL SPEED SENSOR PIDs
- Enter the following diagnostic mode on the scan tool: Data Logger - ABS Module.
- While driving the vehicle at 30 km/h (18 mph), monitor the following wheel speed sensor PIDs:
- Left Front Wheel Speed Sensor (LF_WSPD)
- Left Rear Wheel Speed Sensor (LR_WSPD)
- Right Front Wheel Speed Sensor (RF_WSPD)
- Right Rear Wheel Speed Sensor (RR_WSPD)
- Compare the speedometer reading to the wheel speed sensor PIDs.
Do the wheel speed sensor PIDs and speedometer speeds match within 1.5 km/h (1 mph)?
- Yes : GO to AB2 .
- No : VERIFY that the 4 road wheels are the same size and have similar tread depth. CHECK the ABS for faults. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . TEST the system for normal operation.
- AB2 CHECK RESISTANCE OF THE ELD FIELD COIL
- Ignition OFF.
- Disconnect: ELD Field Coil.
-
NOTE: If the temperatures are exceptionally high, a higher than normal resistance reading could result. A lower temperature could result in a lower resistance reading.
Measure the resistance between ELD field coil C4359 pins 1 and 2, component side.
Is the resistance between 2-4 ohms?
- Yes : GO to AB3 .
- No : INSTALL a new ELD field coil. REFER to REAR DRIVE AXLE/DIFFERENTIAL - FORD 9.75-INCH RING GEAR . CLEAR the DTCs. TEST the system for normal operation.
- AB3 CHECK THE ELD FIELD COIL GROUND
- Measure the resistance between ELD field coil C4359-2 , circuit GD123 (BK/GY), harness side and ground.
Is the resistance less than 3 ohms?
- Yes : REFER to REAR DRIVE AXLE/DIFFERENTIAL - FORD 9.75-INCH RING GEAR to repair the rear differential. CLEAR the DTCs. TEST the system for normal operation.
- No : REPAIR circuit GD123 (BK/GY). CLEAR the DTCs. TEST the system for normal operation.