Pinpoint Test H: B135C:11, B135C:15

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

H1 CHECK THE HSWM (HEATED STEERING WHEEL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition OFF.
- Review the retrieved Diagnostic Trouble Codes (DTCs) from the HSWM self-test.
Is DTC B135C:11 present?

Yes GO to H2

No GO to H8

H2 CHECK THE HEATER ELEMENT VOLTAGE CIRCUIT FOR A SHORT TO GROUND

Disconnect HSWM C2406.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to H5

GO to H3

H3 CHECK THE HEATER ELEMENT VOLTAGE CIRCUIT TO THE CLOCKSPRING FOR A SHORT TO GROUND

Remove the steering column shrouds to access the clockspring connectors. REFER to: Steering Column Shrouds .

Disconnect Clockspring C218C.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to H4

No	REPAIR the circuit.

H4 CHECK THE HEATER ELEMENT FOR A SHORT TO GROUND

Remove the driver airbag. REFER to: Driver Airbag .

Disconnect Clockspring C218D.

On the steering wheel side, measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY C218D, pin 2 (steering wheel side)	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	INSTALL a new clockspring. REFER to: Clockspring .

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

H5 CHECK THE HEATER ELEMENT AND RETURN CIRCUIT RESISTANCE

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	C2406-7

Is the resistance between 1.6 and 3.1 ohms?

Yes

GO to H12

GO to H6

H6 CHECK THE HEATER ELEMENT CIRCUITS FOR A SHORT TOGETHER

Remove the steering column shrouds to access the clockspring connectors. REFER to: Steering Column Shrouds .

Disconnect Clockspring C218C.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	C2406-7

Is the resistance greater than 10, 000 ohms?

Yes

GO to H7

No	REPAIR the circuits.

H7 CHECK THE HEATER ELEMENT FOR AN INTERNAL SHORT

Remove the driver airbag. REFER to: Driver Airbag .

Disconnect Clockspring C218D.

On the steering wheel side, measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY C218D, pin 2 (steering wheel side)	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY C218D, pin 1 (steering wheel side)

Is the resistance between 1.6 and 3.1 ohms?

Yes	INSTALL a new clockspring. REFER to: Clockspring .

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

H8 CHECK THE HEATER ELEMENT VOLTAGE AND GROUND CIRCUITS FOR A SHORT TO VOLTAGE

Remove the steering column shrouds to access the clockspring connectors. REFER to: Steering Column Shrouds .

Disconnect HSWM C2406.

Disconnect Clockspring C218C.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	Ground
C2406-7	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit in question.

GO to H9

H9 CHECK THE HEATER ELEMENT AND CIRCUIT RESISTANCE

Ignition OFF.

Connect Clockspring C218C.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	C2406-7

Is the resistance between 1.6 and 3.1 ohms?

Yes

GO to H12

GO to H10

H10 CHECK THE HEATER ELEMENT CIRCUITS FOR AN OPEN

Disconnect Clockspring C218C.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2406-8	Courtesy of FORD MOTOR COMPANY	C218C-1
C2406-7	Courtesy of FORD MOTOR COMPANY	C218C-2

Are the resistances less than 3 ohms?

Yes

GO to H11

No	REPAIR the circuit in question.

H11 CHECK THE HEATER ELEMENT RESISTANCE

Remove the driver airbag. REFER to: Driver Airbag .

Disconnect Clockspring C218D.

On the steering wheel side, measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY C218D, pin 2 (steering wheel side)	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY C218D, pin 1 (steering wheel side)

Is the resistance between 1.6 and 3.1 ohms?

Yes	INSTALL a new clockspring. REFER to: Clockspring .

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

H12 CHECK FOR CORRECT HSWM (HEATED STEERING WHEEL MODULE) OPERATION

Disconnect and inspect the HSWM connector.

Inspect for the following and repair as necessary:
- 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 HSWM connector and all other previously disconnected 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 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 HSWM. REFER to: Heated Steering Wheel Module (HSWM) .

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.