P0940 - Hydraulic oil temperature sensor circuit high input. Replace the rear axle oil temperature sensor. If the circuit is okay, suspect a faulty rear axle oil temperature sensor. Check rear axle oil temperature sensor circuit. P0939 - Hydraulic oil temperature sensor circuit low input. P0937 - Hydraulic oil temperature sensor circuit. P0932 - Hydraulic pressure sensor circuit. If voltages are within specification, replace the DEM. If it returns, verify all power and ground voltages are correct at the DEM connector. If system voltage is within specification, replace the DEM. Verify all power and ground voltages are correct at the DEM connector. Check battery and charging system voltage. See figure 1 for a list of codes you might find in the DEM or 4WDCM. PCM and ABS problems can interfere with the all-wheel drive system operation.Īfter you’ve corrected all codes in the other modules, access the DEM (differential electronic module) or the 4WDCM (4wd control module) and retrieve codes from the AWD system.
Document all codes you receive from each of these modules.īefore starting your diagnosis, be sure to correct all codes in the other modules. DIAGNOSING FORD’S INTELLIGENT AWD SYSTEMSĭiagnosing Ford’s Intelligent AWD system is pretty straightforward: Simply connect a compatible scan tool to the DLC and check for codes in the PCM, TCM, and the ABS control module. If the computer detects wheel slip between the front and rear wheels, or if you operate the vehicle under heavy throttle, the Intelligent AWD system will increase the torque to the rear wheels to prevent or control wheel slip. The intelligent AWD system continuously monitors vehicle conditions and automatically adjusts the torque distribution between the front and rear wheels.ĭuring normal operation, most of the torque from the transmission is sent to the front wheels. HOW DOES THE INTELLIGENT AWD SYSTEM OPERATE? These systems combine transparent, all-surface operation and are capable of handling all road conditions, including street and highway driving, and off-road and winter driving.
Ford diagnostic system driver#
These all-wheel drive systems are always active and require no input from the driver there’s no mode-select switch. WHAT IS AN INTELLIGENT AWD SYSTEM?įord’s new all-wheel drive systems are referred to as Intelligent All-Wheel Drive systems. In this issue of Keep those Trannys Rolling, we’ll look at the diagnostic routines needed to keep Ford’s Intelligent AWD systems rolling down the road. They’re designed to operate in conjunction with many of today’s on-board systems, such as the engine performance system, the transmission control system, and the antilock brake system, which may also include the vehicle ride and stability control systems.
Ford diagnostic system license#
** These images are for illustration purposes only Obtaining Your License: When Diagnoex approves your request, you will receive a confirmation email, and it will take up to 48hr to receive an email with your license key.Understanding and diagnosing today’s domestic all-wheel drive systems can be quite intimidating.
Ford diagnostic system software#
The hybrid cloud-based system ensures the technician is provided the latest software every time FDRS logs into the Ford network.