Pinpoint Test F : The SCCM (Steering Column Control Module) Does Not Respond To The Diagnostic Scan Tool

WARNING: This page is about a different car, the 2020 Ford Transit Connect. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Module Communications Network for schematic and connector information. Refer to Cruise Control for schematic and connector information.
Normal Operation and Fault Conditions

The SCCM communicates on the HS-CAN2. REFER to: Communications Network - System Operation and Component Description .

Possible Sources
- Fuse
- Wiring, terminals and connector
- SCCM
Visual Inspection and Pre-checks
- Verify BCM fuse 22 (7.5A) is OK.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

F1 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTANCE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the DLC.

Disconnect GWM C2431.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2431-18	Courtesy of FORD MOTOR COMPANY	C2431-17

Is the resistance between 108 and 132 ohms?

Yes

GO to F3

GO to F2

F2 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C226A-4	Courtesy of FORD MOTOR COMPANY	C2431-18
C226A-5	Courtesy of FORD MOTOR COMPANY	C2431-17

Are the resistances less than 3 ohms?

Yes

GO to F5

No	REPAIR the circuit in question.

F3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SCCM C226A

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C226A-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to F4

No	Verify the BCM fuse 22 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

F4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C226A-14	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistances less than 3 ohms?

Yes

GO to F5

No	REPAIR the circuit.

F5 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the SCCM 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 SCCM connectors. 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM. REFER to Steering Wheel And Column Electrical Components .

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.