Taurus AWD V6-3.5L (2009)
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Refer to Information Bus to diagnose no response from the PCM.
7. Carry out the network test.
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If the scan tool responds with no communication for one or more modules, refer to Information Bus.
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If the network test passes, retrieve and record the continuous memory DTCs.
8. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB.
9. If the DTCs retrieved are related to the concern, go to DTC Charts See: Diagnostic Trouble Code Descriptions/Smart Junction Box (SJB). For all
other DTCs, refer to Diagnostic Trouble Code (DTC) Chart See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) Chart.
10. If no DTCs related to the concern are retrieved, GO to Symptom Chart. See: Symptom Related Diagnostic Procedures/Smart Junction Box (SJB)
Principles of Operation
Smart Junction Box (SJB)
Principles of Operation
NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).
NOTE: The time out for the battery saver relay and the accessory delay relay (both are controlled by the SJB) is 1 minute if the vehicle has less than 80
km (50 miles). Once the vehicle passes the approximate mileage threshold of 80 km (50 miles), the time out for both relays will be the normal 10 minute
time out, as described in the Owner's Literature. For the battery saver relay, refer to Courtesy Lamp. For the accessory delay relay, refer to Windows.
See: Lighting and Horns/Courtesy Lamp/Testing and Inspection
The SJB is a multifunction electronic module that controls many of the vehicle systems. Most of the SJB functions utilize hardwired inputs and/or
outputs. The SJB controls the following hardwired functions, using the corresponding inputs and outputs:
In addition, the SJB is involved in other vehicle systems through communication over the Medium Speed Controller Area Network (MS-CAN). For a
detailed list of SJB network inputs and outputs, refer to the Principles of Operation in Information Bus. See: Powertrain Management/Computers and
