Pinpoint Test B : The Abs Module Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2015 Lincoln MKT. 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: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery, Mounting and Cables .

B1 CHECK THE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: ABS Module C135 .

Ignition ON.

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C135-1	SBB05 (GY/RD)	-	Ground
C135-25	SBB43 (BU/RD)	-	Ground
C135-28	CBB89 (VT/GY)	-	Ground

Courtesy of FORD MOTOR COMPANY

Is the voltage greater than 11 volts?

Yes	GO to B2.
No	VERIFY the Battery Junction Box (BJB) fuse 5 (50A), fuse 43 (20A) or fuse 89 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

B2 CHECK THE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: Negative Battery Cable.

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C135-13	GD120 (BK/GN)	-	Ground
C135-38	GD120 (BK/GN)	-	Ground

Courtesy of FORD MOTOR COMPANY

Is the resistance less than 3 ohms?

Yes	GO to B3.
No	REPAIR the circuit in question. CONNECT the negative battery cable.

B3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE ABS MODULE FOR AN OPEN

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C135-26	VDB04 (WH/BU)	C251-6	VDB04 (WH/BU)
C135-14	VDB05 (WH)	C251-14	VDB05 (WH)

Courtesy of FORD MOTOR COMPANY

Are the resistances less than 3 ohms?

Yes	CONNECT the negative battery cable. GO to B4.
No	REPAIR the circuit in question. CONNECT the negative battery cable.

B4 CHECK FOR CORRECT ABS MODULE OPERATION

Disconnect the ABS module connector.

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

Connect the ABS module connector and make sure it seats correctly.

Operate the system and verify the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) and Stability Control .
No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.