Pinpoint Test K : Steering Wheel Switch(Es) Illumination Is Inoperative Or Always On

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

WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

K1 INSPECT THE NON-NETWORKED ILLUMINATION COMPONENTS

Ignition ON.

Place the headlamp switch in the PARKING LAMPS or HEADLAMPS position.

While pressing the illumination dim up and dim down switch, monitor the non-networked illumination components.

Are all of the non-networked illumination sources inoperative or always on?

Yes	If all non-networked illumination sources are inoperative, GO to Pinpoint Test B If all non-networked illumination sources are always on, GO to Pinpoint Test C

No	If all steering wheel switch illumination is inoperative, GO to K2. If only one steering wheel switch is inoperative: GO to K5

K2 CHECK FOR ILLUMINATION VOLTAGE AT THE CLOCKSPRING

Ignition OFF.

Place the headlamp switch in the OFF position.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Remove the driver airbag. REFER to: Driver Airbag .

Disconnect Lower Clockspring C218A .

Place a light source over the ambient light sensor so the illumination can reach maximum intensity.

Headlamp switch in the PARKING LAMPS or HEADLAMPS position.

Ignition ON.

Press the illumination dim up switch until full illumination intensity is reached.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C218A- 9	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to K3

No	REPAIR the circuit

K3 CHECK THE ILLUMINATION GROUND CIRCUIT

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C218A-9	Courtesy of FORD MOTOR COMPANY	C218A-8

Is the voltage greater than 11 volts?

Yes

GO to K4

No	REPAIR the circuit.

K4 CHECK THE CLOCKSPRING

Connect Lower Clockspring C218A .

Disconnect Upper Clockspring C218B

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C218B pin 9 (component side)	Courtesy of FORD MOTOR COMPANY	C218B pin 10 (component side)

Is the voltage greater than 11 volts?

Yes	INSTALL a new steering wheel. REFER to: Steering Wheel .

No	INSTALL a new clockspring. REFER to: Clockspring .

K5 CHECK THE STEERING WHEEL HARNESS ILLUMINATION CIRCUIT FOR AN OPEN

Ignition OFF.

Place the headlamp switch in the OFF position.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Remove the driver airbag. REFER to: Driver Airbag .

Disconnect inoperative switch.

Disconnect Upper Clockspring C218B .

Measure:

LH steering wheel switch (upper)

Positive Lead	Measurement / Action	Negative Lead
C218B-9	Courtesy of FORD MOTOR COMPANY	C2998-4

LH steering wheel switch (lower)

Positive Lead	Measurement / Action	Negative Lead
C218B-9	Courtesy of FORD MOTOR COMPANY	C2366-6

RH steering wheel switch (upper)

Positive Lead	Measurement / Action	Negative Lead
C218B-9	Courtesy of FORD MOTOR COMPANY	C2999-4

LH steering wheel switch (lower)

Positive Lead	Measurement / Action	Negative Lead
C218B-9	Courtesy of FORD MOTOR COMPANY	C2367-6

Downshift paddle shift switch

Positive Lead	Measurement / Action	Negative Lead
C218B-9	Courtesy of FORD MOTOR COMPANY	C2429-1

Upshift paddle shift switch

Positive Lead	Measurement / Action	Negative Lead
C218B-9	Courtesy of FORD MOTOR COMPANY	C2428-4

Is the resistance less then 3 ohms?

Yes

GO to K6

No	INSTALL a new steering wheel. REFER to: Steering Wheel .

K6 CHECK THE STEERING WHEEL HARNESS ILLUMINATION GROUND CIRCUIT FOR AN OPEN

Measure:

LH steering wheel switch (upper)

Positive Lead	Measurement / Action	Negative Lead
C218B-10	Courtesy of FORD MOTOR COMPANY	C2998-1

LH steering wheel switch (lower)

Positive Lead	Measurement / Action	Negative Lead
C218B-10	Courtesy of FORD MOTOR COMPANY	C2366-1

RH steering wheel switch (upper)

Positive Lead	Measurement / Action	Negative Lead
C218B-10	Courtesy of FORD MOTOR COMPANY	C2999-1

RH steering wheel switch (lower)

Positive Lead	Measurement / Action	Negative Lead
C218B-10	Courtesy of FORD MOTOR COMPANY	C2367-1

Downshift paddle shift switch

Positive Lead	Measurement / Action	Negative Lead
C218B-10	Courtesy of FORD MOTOR COMPANY	C2429-2

Upshift paddle shift switch

Positive Lead	Measurement / Action	Negative Lead
C218B-10	Courtesy of FORD MOTOR COMPANY	C2428-3

Is the resistance less then 3 ohms?

Yes	REFER to: Steering Wheel Multifunction Switch .

No	INSTALL a new steering wheel. REFER to: Steering Wheel .