Ranger 2WD V6-4.0L (2010)
NOTE: Due to varying wattage ratings and resulting current draw, certain aftermarket headlamp bulbs may cause the SJB to shut down the short circuit
protection, resulting in the low beams becoming inoperative.
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Place the headlamp switch in the OFF position.
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Verify the SJB is configured for DRL. Refer to Information Bus.
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Verify the headlamp bulbs meet Ford specifications.
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Do the headlamp bulbs meet Ford specifications?
Yes
GO to X3.
No
INSTALL new headlamp bulbs according to Ford specifications. After the repair:
If no DTCs are present, TEST the system for normal operation.
If DTC B106E is present, CLEAR the DTCs and REPEAT the self-test (required to enable the low beam output driver if DTC B106E is present).
TEST the system for normal operation.
If DTC B106F is present, INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.
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X3 CHECK FOR CORRECT SJB OPERATION
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Disconnect all the SJB connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the SJB connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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Pinpoint Test Y: DTC U0155
Daytime Running Lamps (DRL)
Pinpoint Test
Pinpoint Test Y: DTC U0155
Normal Operation
The Smart Junction Box (SJB) sets DTC U0155 if data messages received from the Instrument Cluster (IC) over the High Speed Controller Area
Network (HS-CAN) are missing. For a complete list of all network messages, refer to Information Bus.
This pinpoint test is intended to diagnose the following:
