Expedition 2WD V8-5.4L (2009)
Power Distribution Module: Service and Repair
Smart Junction Box (SJB)
Removal
NOTICE: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage to the module may result.
NOTE: Prior to the replacement of the module, it is necessary to upload the module configuration information to a scan tool. This information must be
downloaded into the new Smart Junction Box (SJB) after installation. In the event that As-Built data entry is required (SJB will not communicate), all
Remote Keyless Entry (RKE) devices must be programmed to the new SJB. A minimum of 2 devices are necessary to complete the configuration and
turn off the flashing interior lights.
1. NOTE: This step is only necessary if the SJB is being replaced.
NOTE: The Tire Pressure Monitoring System (TPMS) functionality is integral to the SJB. A new SJB is delivered in a "manufacturing mode"
with 7 pre-set DTCs. A successful configuration of the SJB, then a successful TPMS sensor training, then a successful self-test including the
clearing of all DTCs is required in order to clear the 7 pre-set manufacturing mode DTCs. The 7 manufacturing mode DTCs are:
-
B106D (Tire Pressure Monitor System [TPMS] Initiators Not Configured) - This DTC is present when the SJB is not configured, even on
applications that are not equipped with initiators.
-
B2477 (Module Configuration Failure)
-
B2868 (Left Front Tire Pressure Sensor Fault)
-
B2869 (Right Front Tire Pressure Sensor Fault)
-
B2870 (Right Rear Tire Pressure Sensor Fault)
-
B2871 (Left Rear Tire Pressure Sensor Fault)
-
C2780 (ECU in Manufacturer Sub-State)
Upload the module configuration information from the SJB into the scan tool.
2. Disconnect the battery.
3. Remove the RH cowl panel side trim.
4. Remove the glove compartment.
5. Disconnect the 7 electrical connectors.
6. Remove the 2 bolts and the SJB.
Installation
