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Home >> Ford >> 2007 >> Mustang V6-4.0L VIN N >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Power and Ground Distribution >> Power Distribution Module >> Service and Repair

Power Distribution Module: Service and Repair

SMART JUNCTION BOX (SJB)







Removal

CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.

NOTE: Prior to the removal of the module, it is necessary to upload the module configuration information to a scan tool. This information must be downloaded into the new SJB after installation.

1. NOTE:
- The tire pressure monitoring system (TPMS) functionality is integral to the SJB.
- A new SJB is delivered in a manufacturing mode with 6 pre-set DTCs. These DTCs require that successful configuration of the SJB occurs, then successful TPMS sensor training occurs, then a successful self-test occurs, including clearing of DTCs. These are required in order to clear the 6 manufacturing mode DTCs. They are as follows:

- 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 A-pillar lower trim panel.
4. Disconnect the 2 front SJB electrical connectors.
5. Remove the SJB nut.
6. Slide the SJB downward and position the SJB forward to access the rear electrical connectors.

7. NOTE: To remove the coaxial antenna from the SJB, lift the red lock tab outward and press the black lever to release the connector.

Disconnect the 6 rear SJB electrical connectors, the coaxial antenna and remove the SJB.

Installation

1. CAUTION: Make sure the wiring harnesses are correctly routed. Pinching the wiring harnesses between the SJB and the mounting surface may cause damage to the wiring harness.

NOTE: Do not remove the watershield from the new SJB.

Connect the 6 rear SJB electrical connectors, the coaxial antenna and install the SJB.

2. Install the SJB nut.
- Tighten to 6 Nm (53 lb-in).

3. Connect the 2 front SJB electrical connectors.
4. Install the RH A-pillar lower trim panel.
5. Connect the battery.

6. NOTE: When successful, this step provides the calibration necessary for the SJB operation and clears the DTC B2477. The clearing of this DTC indicates the calibration data has been successfully downloaded to the new SJB.

Download the SJB configuration information from the scan tool to the new SJB.

7. NOTE: When successful, this step clears DTCs B2868, B2869, B2870, and B2871. The clearing of these DTCs indicates the SJB has recognized the tire pressure sensors during the tire pressure sensor training procedure.

Train the tire pressure sensors.

8. NOTE:
- DTC C2780 will not clear if any of the 5 manufacturing mode DTCs are present in the SJB.
- This step is required to clear DTC C2780, allow the SJB to exit the manufacturing mode, and to be sure there are no other concerns with the newly programmed SJB.

Carry out the SJB on-demand self-test. Clear the DTCs and then retrieve the DTCs to confirm all DTCs have been cleared.
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