Diagnose and fix a wipers won’t shut off problem on Ford F150s
Ford has issued a service bulletin #15-006 to address a wipers won’t shut off problem on the
vehicles listed below. The fix involves replacing either the multi-function switch on the steering column or the wiper motor. But first, confirm yours has these symptoms.
The technical service bulletin #15-006 address an issue where the wipers won’t shut off after you’ve turned the wiper switch to off. The wipers continue to wipe at a low intermittent speed.
Vehicles affected by TSB #15-006
2011-2014 Ford Edge
2011-2014 Ford Explorer
2011-2014 Ford F-150 and F-Super Duty
2011-2014 Lincoln MKX
How Ford wipers work
In the old days the wiper switch actually switched power to the wiper motor, so a problem like this would definitely indicate a shorted switch. But nothing is that easy anymore. The multifunction switch in late model vehicles acts as a signal to some type of controller. In the early 2000s vehicles, the switch signaled the body control module which switched power. But even that has changed on late model Ford products. Now, the multifunction switch acts as a signal to the Steering Column Control Module (SCCM). Yeah, another computer.
Diagnose wipers won’t shut off issue
The first step is to check for trouble codes. In this particular case, Ford says the problem sets a B1131:08 trouble code. The code means there’s a communication error on the digital data bus (Local Interconnect Network (LIN).
Next unplug the SCCM. If the wipers continue to run, check the brown/white wire to determine if there’s a short to ground. If you find that, repair it and see if the wipers stop. If the brown/white wire isn’t shorted to ground, the wiper motor is the culprit.
If the wipers shut off the instant you disconnect the SCCM, then the problem is most likely in the multifunction switch. You can check the operation of the switch with a scan tool. Connect your scan tool and check that all the wiper modes show OFF.
2. This code can be set by an open or shorted Yellow/Gray wire between the SCCM and the wiper motor, defective multifunction switch or a bad wiper motor.
3. Unplug the SCCM and see if the wipers continue to run. If they still run, check the Brown/White (BN/WH) wire for a short to ground and repair if necessary.
4. If the wire is OK and the wipers continue to run, replace the wiper motor.
5. If the wipers do not run with the SCCM unplugged, plug everything back in and access the SCCM data with your scan tool.
6. Make sure the multifunction switch is in the OFF position and check the wiper PIDs to verify they all read OFF.
The scan tool readout should look like this:
As you can see, the multifunction switch is designed to provide five intermittent speeds, slow speed, high speed, and single wipe. If your scan tool shows any of those modes as ON while the switch is turned OFF, the multifunction switch is bad and must be replaced.
Replace multifunction switch Ford F150
You have to remove the airbag, steering wheel and clockspring to access the multifunction switch. Here are the steps:
Turn off ALL accessories
Turn the ignition switch to the OFF position.
Locate the body control module (BCM) below the right hand side of the instrument panel. Then remove the RCM fuse from the BCM
Turn the ignition switch to the ON position. The airbag light should illuminate for at least 30 seconds. The light should stay ON. If it flashes or goes out, you’ve removed the wrong fuse.
Turn the ignition OFF.
Disconnect the negative battery cable and wait at least one minute for the airbag system to power down.
Remove the airbag from the steering wheel.
Remove the steering wheel
Remove the clockspring.
Replace the multifunction switch and reinstall all the components in the reverse order.
To repower the airbag
Install the RCM fuse
Reconnect the negative battery terminal
Turn the ignition switch to ON and then OFF. Wait 10 seconds. Then turn the ignition switch back to ON. The airbag light should light for approximately 6 seconds and then turn off. This may take up to 30 seconds because the airbag module is recharging and conducting trouble shooting. If there’s a problem, the airbag light will stay on, not light or will flash.
Ford multifunction switch part numbers
BC3Z-13K359BA Switch Assembly – 150, F-Super Duty – 2011-2013 Black, From: 05/17/2011 To: 10/28/2013 2011/2013 ; Less Camera, With Variable Int. Windshield Wipe | From: 05/17/2011 To: 10/28/2013 2011/2013 ; Rear View Camera-Fixed, With Variable Int. Windshield Wipe
Buy a new BC3Z13K359BA multifunction switch
BL3Z-13K359BA Switch Assembly – F150 – Black, From: 10/24/2011 To: 10/28/2013 2012/2013 ; Rain Sensitive Windshield Wipers
Buy a new BL3Z13K359BA multifunction switch
CL3Z-13K359AA Switch Assembly – F150 – Black, From: 10/24/2011 To: 10/28/2013 2012/2013 ; Front Camera/Rear View Camera, With Variable Int. Windshield Wipe
EL3Z-13K359AA Switch Assembly – F150 – Black, From: 10/28/2013 To: 12/23/2014 2014/ ; Front Camera/Rear View Camera, With Variable Int. Windshield Wipe
EC3Z-13K359AA Switch Assembly – F150, F-Super Duty – Black, From: 10/28/2013 To: 12/23/2014 2014/ ; Less Camera, With Variable Int. Windshield Wipe | From: 10/28/2013 To: 12/23/2014 2014/ ; Rear View Camera-Fixed, With Variable Int. Windshield Wipe
EL3Z-13K359BA Switch Assembly – F150 – Black, From: 10/28/2013 To: 12/23/2014 2014/ ; Rain Sensitive Windshield Wipers
DB5Z-17A553AA Switch Assembly – Explorer, Edge/MKX – Black, From: 06/03/2013 2014/ ; Less Rain Sensitive Windshield Wipers
DB5Z-17A553BA Switch Assembly – Explorer, Edge/MKX – Black, From: 06/03/2013 2014/ ; With Rain Sensitive Windshield Wipers
©, 2017 Rick MuscoplatPosted on by Rick Muscoplat