Pinpoint Test AU : The AWD (All-Wheel Drive) Module Does Not Respond To The Diagnostic Scan Tool

WARNING: This page is about a different car, the 2018 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.

AU1 CHECK THE AWD (ALL-WHEEL DRIVE) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Disconnect AWD module C482 .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C482-11	Courtesy of FORD MOTOR COMPANY	Ground
C482-20	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to AU2

No	VERIFY BJB fuses 34 (10A) and 49 (40A) are OK. If OK, repair the circuit in question. If not OK, REFER to OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short.

AU2 CHECK THE AWD (ALL-WHEEL DRIVE) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C482-9	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	CONNECT negative battery cable. GO to AU3

No	REPAIR the circuit.

AU3 CHECK THE HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE AWD (ALL-WHEEL DRIVE) MODULE AND THE DLC (DATA LINK CONNECTOR) FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C482-19	Courtesy of FORD MOTOR COMPANY	C251-6
C482-18	Courtesy of FORD MOTOR COMPANY	C241-14

Are the resistances less than 3 ohms?

Yes

GO to AU4

No	REPAIR the circuit in question.

AU4 CHECK FOR CORRECT AWD (ALL-WHEEL DRIVE) MODULE OPERATION

Ignition OFF.

Disconnect and inspect all the AWD module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the AWD connectors module. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new AWD module. Refer to: All-Wheel Drive (AWD) Module .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.