Focus L4-2.0L (2009)
Body Control Systems: Pinpoint Tests
Pinpoint Test A: DTC B106E
Smart Junction Box (SJB)
Pinpoint Tests
Pinpoint Test A: DTC B106E
Normal Operation
The Smart Junction Box (SJB) controls the output of several vehicle systems. When a repetitive fault causing a circuit overload is detected on any of the
output circuits, the SJB disables the circuit by removing voltage, or ground, to the affected circuit. The circuit remains disabled until the fault is
corrected and an on-demand self-test is run. After the on-demand self-test has been run, any DTCs related to the fault are cleared.
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DTC B106E (Solid State Driver Disabled Due To Short Circuit) - sets when the SJB has disabled a circuit due to a repetitive fault causing a circuit
overload. A corresponding DTC for the circuit in question sets.
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DTC B106F (Module Disabled Due to External Fault) - sets when one or more output functions are permanently disabled due to a repetitive circuit
overload fault. DTC B106F sets with DTC B106E. When DTC B106F is present, a new SJB must be installed after the fault condition has been
corrected.
This pinpoint test is intended to diagnose the following:
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Output circuit short to ground or voltage
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SJB
PINPOINT TEST A: DTC B106E
NOTICE: If DTC B106F is present and a new Smart Junction Box (SJB) is to be installed, the fault condition must be corrected first. Failure to
correct the fault condition first may cause damage to the new SJB, resulting in a repeat repair.
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A1 REVIEW THE DTCs
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Review the DTCs from the SJB self-test.
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Are only DTCs B106E and B106F present?
No
INSTALL a new SJB. REFER to Smart Junction Box (SJB) See: Power and Ground Distribution/Power Distribution Module/Service and Repair. TEST
the system for normal operation.
No
CORRECT any DTCs present other than DTCs B106E and B106F. REFER to DTC Charts. After the repair, GO to A2. See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) Chart
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A2 CARRY OUT THE SJB SELF-TEST
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Carry out the SJB self-test.
-
Is DTC B106F present?
Yes
INSTALL a new SJB. REFER to Smart Junction Box (SJB) See: Power and Ground Distribution/Power Distribution Module/Service and Repair. TEST
the system for normal operation.
No
The system is operating correctly at this time. The concern was caused by a fault in one of the output circuits.
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