Pinpoint Test A: DTCs B106E, B106F
Smart Junction Box (SJB)
Pinpoint Tests
Pinpoint Test A: DTCs B106E, B106F
Normal Operation
When a repetitive fault causing a circuit overload is detected on certain output circuits, the Smart Junction Box (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. When the on-demand self-test has been run after all faults have been corrected, any DTCs related to the fault are cleared.
- 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. For a complete list of corresponding DTCs, refer to the Principles of Operation. Principles of Operation
- 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. When DTC B106F is present (DTC B1342 may also be present), the SJB must be replaced after the fault condition has been corrected.
This pinpoint test is intended to diagnose the following:
- Output circuit short to ground or voltage
- SJB
PINPOINT TEST A: DTCs B106E, B106F
NOTICE: If DTC B106F is present and the Smart Junction Box (SJB) is being replaced, 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.
NOTICE: If DTC B106F is present, DTC B1342 may also be present. At this time, ignore these DTCs and follow the necessary diagnostics to resolve DTC B106E and any other DTCs that are present. DTC B106E is present only when there is another DTC due to a software issue or a circuitry issue that must be resolved before another self-test is run. Each time a self-test is run, 1 of the 3 thresholds is used. Once the 3 thresholds are used, DTCs B106F and B1342 are present and the Smart Junction Box (SJB) must be replaced. All other DTCs MUST be resolved first, or else the new SJB begins to have its 3 thresholds used with each self-test that is run.
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A1 CHECK FOR DTC B106E
- Review the DTCs from the SJB self-test.
- Is DTC B106E present?
Yes
GO to A2.
No
GO to A3.
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A2 CHECK FOR OTHER DTCs
- Review the DTCs from the SJB self-test.
- Are any SJB DTCs present other than DTC B106E?
Yes
CORRECT any other DTCs. REFER to the Diagnostic Trouble Code (DTC) Chart Diagnostic Trouble Code (DTC) Chart. REPEAT the self-test (on-demand DTCs).
No
CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
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A3 CHECK FOR DTC B106F
- Review the DTCs from the SJB self-test.
- Is DTC B106F present?
Yes
CORRECT any other DTCs. REFER to Diagnostic Trouble Code (DTC) Chart Diagnostic Trouble Code (DTC) Chart. INSTALL a new SJB. REFER to Smart Junction Box (SJB) 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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