PINPOINT TEST G : The Steering Wheel Auxiliary Controls Are Inoperative Or Do Not Operate Correctly

G1 RETRIEVE THE DTCs FROM THE Generic Function Module (GFM)

Ignition ON.

Using a scan tool, perform the Generic Function Module (GFM) self-test.

Are any Generic Function Module (GFM) DTCs retrieved?

Yes

For DTC B1457:11 or B1459:11, GO to G2. For DTC B1457:15 or B1459:15, GO to G8. For DTC B146B:12, B146B:19, B146C:12, B146C:19, B146D:12, B146D:19, B146E:12 or B146E:19, GO to G17. For DTC B1457:23, B1458:23, B1459:23 or B145A:23, button held too long may set DTC. ATTEMPT to clean buttons. CLEAR the DTCs. REPEAT the self-test. If code returns, INSTALL a new RH steering wheel switch. REFER to Steering Column Switches .

GO to G19.

G2 CHECK THE STEERING WHEEL SWITCH CIRCUITS FOR A SHORT TO THE RETURN CIRCUIT

Ignition OFF.

Disconnect: Generic Function Module (GFM).

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	C2464-7
C2464-10	Courtesy of FORD MOTOR COMPANY	C2464-7

Is the resistance greater than approximately 805 ohms (without SYNC ®) or 515 ohms (with SYNC ®)?

Yes	GO to G3.
No	GO to G6.

G3 CHECK THE STEERING WHEEL SWITCH CIRCUITS FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	Ground
C2464-10	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	GO to G20.
No	GO to G4.

G4 CHECK THE SCCM FOR A SHORT TO GROUND

Disconnect: SCCM C2414A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	Ground
C2464-10	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	GO to G5.
No	REPAIR the circuit.

G5 CHECK FOR A SHORT TO GROUND WHILE DISCONNECTING COMPONENTS

Connect: SCCM C2414A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	Ground
C2464-10	Courtesy of FORD MOTOR COMPANY	Ground

While measuring the resistance, disconnect the following components one at a time, in order. Stop disconnecting components if the measured resistance rises above 10, 000 ohms.
- RH steering wheel control switch C2999
- Clockspring 218B (steering wheel harness)
- Clockspring C218C

Did the resistance rise above 10, 000 ohms?

Yes

If the resistance increased when the steering wheel switch was disconnected, INSTALL a new RH steering wheel switch. REFER to Steering Column Switches . If the resistance increased when the steering wheel harness was disconnected, REPAIR the steering wheel harness. If the resistance increased when the clockspring was disconnected, INSTALL a new clockspring. REFER to Supplemental Restraint System .

INSTALL a new SCCM. REFER to Steering Column Switches .

G6 CHECK THE SCCM CIRCUITS FOR A SHORT

Disconnect: SCCM C2414A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	C2464-7
C2464-10	Courtesy of FORD MOTOR COMPANY	C2464-7

Is the resistance greater than 10, 000 ohms?

Yes	GO to G7.
No	REPAIR the circuit.

G7 CHECK FOR A SHORT WHILE DISCONNECTING COMPONENTS

Connect: SCCM C2414A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	C2464-7
C2464-10	Courtesy of FORD MOTOR COMPANY	C2464-7

While measuring the resistance, disconnect the following components one at a time, in order. Stop disconnecting components if the measured resistance rises above 10, 000 ohms.
- RH steering wheel control switch C2999
- Clockspring 218B (steering wheel harness)
- Clockspring C218C

Did the resistance rise above 10, 000 ohms?

Yes

INSTALL a new SCCM. REFER to Steering Column Switches .

G8 CHECK THE STEERING WHEEL SWITCH CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: Generic Function Module (GFM).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	Ground
C2464-10	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	GO to G9.
No	GO to G11.

G9 CHECK THE SCCM FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: SCCM C2414A.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	Ground
C2464-10	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.
No	GO to G10.

G10 CHECK FOR A SHORT TO VOLTAGE WHILE DISCONNECTING COMPONENTS

Ignition OFF.

Connect: SCCM C2414A.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	Ground
C2464-10	Courtesy of FORD MOTOR COMPANY	Ground

While measuring the voltage, disconnect the following components one at a time, in order. Stop disconnecting components when voltage is no longer present.
- RH steering wheel control switch C2999
- Clockspring 218B (steering wheel harness)
- Clockspring C218C

Is any voltage present?

Yes

INSTALL a new SCCM. REFER to Steering Column Switches .

If the resistance decreased when the steering wheel switch was disconnected, INSTALL a new RH steering wheel switch. REFER to Steering Column Switches . If the resistance decreased when the steering wheel harness was disconnected, REPAIR the steering wheel harness. If the resistance decreased when the clockspring was disconnected, INSTALL a new clockspring. REFER to Supplemental Restraint System .

G11 CHECK THE STEERING WHEEL SWITCH CIRCUIT RESISTANCE

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	C2464-7
C2464-10	Courtesy of FORD MOTOR COMPANY	C2464-7

Is the resistance greater than approximately 805 ohms (without SYNC ®) or 515 ohms (with SYNC ®)?

Yes	GO to G20.
No	GO to G12.

G12 CHECK THE STEERING WHEEL SWITCH CIRCUITS FOR AN OPEN

Disconnect: RH Steering Wheel Control Switch.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	C2999-2
C2464-10		C2999-4
C2464-10		C2999-10
C2464-7		C2999-4

Are the resistances less than 3 ohms?

Yes	GO to G13 .
No	GO to G14 .

G13 CHECK THE STEERING WHEEL SWITCH

Measure component side:

Positive Lead	Measurement / Action	Negative Lead
C2999-2	Courtesy of FORD MOTOR COMPANY	C2999-4
C2999-10	Courtesy of FORD MOTOR COMPANY	C2999-4

Is the resistance approximately 805 ohms (without SYNC ®) or 515 ohms (with SYNC ®)?

Yes	GO to G14 .
No	INSTALL a new RH steering wheel switch. REFER to Steering Column Switches .

G14 CHECK THE STEERING WHEEL SWITCH INSTRUMENT PANEL HARNESS CIRCUITS FOR AN OPEN

Connect: SCCM C2414A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-4	Courtesy of FORD MOTOR COMPANY	C2414A-10
C2464-7		C2414A-12
C2464-10		C2414A-11
C2464-7		C2414A-12

Are the resistances less than 3 ohms?

Yes	GO to G15 .
No	REPAIR the circuit.

G15 CHECK THE STEERING WHEEL SWITCH STEERING WHEEL HARNESS CIRCUITS FOR AN OPEN

Connect: Clockspring C218B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C218B-12	Courtesy of FORD MOTOR COMPANY	C2999-2
C218B-13		C2999-4
C218B-5		C2999-10
C218B-13		C2999-4

Are the resistances greater than 3 ohms?

Yes	GO to G16.
No	REPAIR the circuit.

G16 CHECK THE CLOCKSPRING

Remove the clockspring. REFER to Supplemental Restraint System .

Measure:

Positive Lead	Measurement / Action	Negative Lead
(Component Side) C218C-12	Courtesy of FORD MOTOR COMPANY	(Component Side) C218B-2
(Component Side) C218C-13	Courtesy of FORD MOTOR COMPANY	(Component Side) C218B-4
(Component Side) C218C-5	Courtesy of FORD MOTOR COMPANY	(Component Side) C218B-7
(Component Side) C218C-13	Courtesy of FORD MOTOR COMPANY	(Component Side) C218B-3

Are the resistances less than 3 ohms?

Yes	INSTALL a new SCCM. REFER to Steering Column Switches .
No	INSTALL a new clockspring. REFER to Supplemental Restraint System .

G17 CHECK CUSTOMER INSTALLED EQUIPMENT

Ignition OFF.

Disconnect all customer installed equipment controlled by the suspect auxiliary steering wheel switch output (AUX1, AUX2, AUX3 or AUX4).

Ignition ON.

Using a scan tool, Clear the DTCs and perform Generic Function Module (GFM) self-test.

Does the Generic Function Module (GFM) DTC return?

Yes	For DTC B146B:12, B146C:12, B146D:12 or B146E:12, GO to G18. For DTC B146B:19, B146C:19, B146D:19 or B146E:19, GO to G20.
No	DIAGNOSE the customer-installed equipment.

G18 CHECK THE STEERING WHEEL CONTROL OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: Generic Function Module (GFM).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-3	Courtesy of FORD MOTOR COMPANY	Ground
C2464-5		Ground
C2464-9		Ground
C2464-11		Ground

Is any voltage present?

Yes	REPAIR the circuit.
No	GO to G20.

G19 CHECK THE STEERING WHEEL CONTROL OUTPUT CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: Generic Function Module (GFM).

Disconnect: Inline C2238.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2464-3	Courtesy of FORD MOTOR COMPANY	C2238-2
C2464-5		C2238-3
C2464-9		C2238-4
C2464-11		C2238-5

Is any voltage present?

Yes	GO to G20.
No	REPAIR the circuit.

G20 CHECK THE Generic Function Module (GFM) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all Generic Function Module (GFM) 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 Generic Function Module (GFM) 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new Generic Function Module (GFM). REFER to Generic Function Module (GFM) .
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.