F 350 2WD Super Duty V10-6.8L (2009)
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Is the resistance less than 5 ohms?
Yes
GO to C8.
No
REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
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C5 CHECK THE INSTRUMENT PANEL DIMMER SWITCH
NOTE: Make sure the doors are closed.
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Ignition OFF.
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Disconnect: Instrument Panel Dimmer Switch C2065.
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Are the courtesy lamps still illuminated?
Yes
GO to C6.
No
INSTALL a new instrument panel dimmer switch. CLEAR the DTCs. REPEAT the self-test.
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C6 CHECK CIRCUIT CLN28 (GN/BU) FOR A SHORT TO GROUND
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Disconnect: SJB C2280b.
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Measure the resistance between the instrument panel dimmer switch C2065-2, circuit CLN28 (GN/BU), harness side and ground.
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Is the resistance greater than 10,000 ohms?
Yes
GO to C8.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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C7 CHECK CIRCUITS CLN03 (YE/GY), CLN26 (BU) AND CLN25 (VT) FOR A SHORT TO VOLTAGE
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Ignition OFF.
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Disconnect: SJB C2280a (DTC B2A35 or DTC B2A37).
