Multifunction Electronic Modules Ford Econoline E250

SPECIFICATIONS

TORQUE SPECIFICATIONS

Smart Junction Box (SJB)

The SJB is located left of the brake pedal on the cowl and has control of the following systems

1. Interior lighting
2. Exterior lighting
3. Dimmable backlighting
4. Battery saver function
5. Delayed accessory relay function
6. Horn
7. Brake shift interlock
8. Power door locks
9. Remote Keyless Entry (RKE) system
10. Passive Anti-Theft System (PATS)
11. Tire Pressure Monitoring System (TPMS)

Refer to the appropriate system specific information and diagnostics.

Battery Saver

Note. Time-out is 1 minute if the vehicle has less than 80 km (50 miles).

The SJB provides automatic shut-off of some system controlled components after a time-out period in order to save battery voltage. A timer in the SJB is started when the ignition is turned OFF and all the doors are closed. When 10 minutes have elapsed, the voltage is automatically shut off by the SJB. While the SJB has voltage disabled, if the ignition changed out of OFF, any door becomes ajar, the UNLOCK button of the RKE transmitter is pressed, a valid keypad code is entered, or the instrument panel dimmer switch is pressed, the SJB restores voltage and starts the timer again.

Post Crash Alert Feature

The post crash alert is a function controlled by the SJB. If the Restraints Control Module (RCM) determines an impact of enough severity (the air bags may or may not be deployed), the post crash alert function is activated. The post-crash alert function activates the hazard lamp function and cycles the horn on 3 times, then off for 4 seconds, and repeats this cycle until the battery is discharged or the function is turned off. The post crash alert function can be turned off by

1. pressing the hazard flasher lamp switch (which may need to be pressed twice).
2. pressing the RKE transmitter UNLOCK button.
3. pressing the RKE transmitter PANIC button.

Diagnostic Trouble Code (DTC) Chart

Each module has a comprehensive DTC chart listed in an appropriate information. Refer to the table below for the appropriate information.

MASTER DTC INDEX

SPECIAL TOOLS CHART Fluke 77-IV Digital Multimeter FLU77-4 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Flex Probe Kit NUD105-R025D or equivalent

Scheme 1

Scheme 2

Scheme 3

Principles of Operation

Note. The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The SJB controls various systems (such as exterior lighting, interior lighting, power door locks, anti-theft system, dimmable backlighting and the battery saver feature) by monitoring inputs from switches, sensors and messages sent from other modules on the Medium Speed Controller Area Network (MS-CAN). Based on the inputs received, the SJB activates outputs. For example, the SJB monitors the headlamp switch position. Based on this input, the SJB may provide voltage to the exterior lamps.

Field-Effect Transistor (FET) Protection

A Field-Effect Transistor (FET) is a type of transistor that when used with module software can be used to monitor and control current flow on module outputs. The FET protection strategy is used to prevent module damage in the event of excessive current flow.

The SJB utilizes an FET protective circuit strategy for many of its outputs (for example, a headlamp output circuit). Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down (turns off the voltage or ground provided by the module) when a fault event is detected. A short circuit DTC is stored at the fault event and a cumulative counter is started.

When the demand for the output is no longer present, the module resets the FET circuit protection to allow the circuit to function. The next time the driver requests a circuit to activate that has been shut down by a previous short (FET protection) and the circuit is still shorted, the FET protection shuts off the circuit again and the cumulative counter advances.

When the excessive circuit load occurs often enough, the module shuts down the output until a repair procedure is carried out. Each FET protected circuit has 3 predefined levels of short circuit tolerance based on the harmful effect of each circuit fault on the FET and the ability of the FET to withstand it. A module lifetime level of fault events is established based upon the durability of the FET. If the total tolerance level is determined to be 600 fault events, the 3 predefined levels would be 200, 400 and 600 fault events.

When each tolerance level is reached, the short circuit DTC that was stored on the first failure cannot be cleared by a command to clear the continuous DTCs. The module does not allow this code to be cleared or the circuit restored to normal operation until a successful self-test proves that the fault has been repaired. After the self-test has successfully completed (no on-demand DTCs present), DTC B106E and the associated DTC (the DTC related to the shorted circuit) automatically clears and the circuit function returns.

When each level is reached, the DTC associated with the short circuit sets along with DTC B106E. These DTCs can be cleared using the module on-demand self-test, then the Clear DTC operation on the scan tool (if the on-demand test shows the fault corrected). The module never resets the fault event counter to zero and continues to advance the fault event counter as short circuit fault events occur.

If the number of short circuit fault events reach the third level, then DTCs B106F and B1342 set along with the associated short circuit DTC. DTC B106F cannot be cleared and the module must be replaced after the repair.

Inspection and Verification

1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Smart Junction Box (SJB) fuse 5 (10A)
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
5. If the scan tool does not communicate with the VCM check the VCM connection to the vehicle. check the scan tool connection to the VCM. refer to «MODULE COMMUNICATIONS NETWORK»(/ford/econoline-e250/2012-2013/remont/communication-devices/#module-communications-network) , No Power To The Scan Tool, to diagnose no power to the scan tool.
6. If the scan tool does not communicate with the vehicle: verify the ignition is ON. The air bag warning indicator prove-out confirms ignition ON (other indicators may not prove ignition ON). If the ignition does not turn on, refer to «STEERING COLUMN SWITCHES»(/ford/econoline-e250/2012-2013/remont/steering-column-switches/#steering-column-switches) to diagnose no power in RUN. verify the scan tool operation with a known good vehicle. refer to «MODULE COMMUNICATIONS NETWORK»(/ford/econoline-e250/2012-2013/remont/communication-devices/#module-communications-network) to diagnose no response from the PCM.
7. Carry out the network test. If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/ford/econoline-e250/2012-2013/remont/communication-devices/#module-communications-network) . 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»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules__dtc-charts) . For all other DTCs, refer to the «DIAGNOSTIC TROUBLE CODE (DTC) CHART»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules__diagnostic-trouble-code-dtc-chart) .
10. If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules__symptom-chart) .

DTC Charts

SMART JUNCTION BOX (SJB) DTC CHART

Symptom Chart

SYMPTOM CHART

Normal Operation

The Smart Junction Box (SJB) controls the output of several vehicle systems by means of solid state drivers. A DTC sets when an overload occurs on any of these drivers. The module also tracks the number of repetitive faults on each of these circuits, and then it compares said number of overloads to 3 progressive thresholds established for each circuit. If the third threshold hase not been met, the DTC for the affected circuit can be cleared by eliminating the fault, clearing the DTCs and then running a self-test.

At the point that each of the first 2 thresholds is met, DTC B106E sets along with a DTC related to the affected circuit. Once the final (third) threshold has been met, the affected output is permanently disabled, and DTC B106F sets, at which time the SJB must be replaced.

1. DTC B106E (Solid State Driver Disabled Due to Short Circuit) - a continuous DTC that sets when the SJB has disabled an output circuit due to a repetitive fault that overloads said circuit. A corresponding DTC for the circuit in question is also set.
2. DTC B106F (Module Disabled Due to External Fault) - a continuous DTC that sets when the SJB has permanently disabled one or more output functions due to a repetitive circuit overload. DTC B1342 also sets at this time.

When DTC B1342 is set because the module has reached a third threshold and the SJB has permanently disabled an output, no DTCs can be cleared from the SJB. Using the module self-test to confirm a repair is not possible and a measurement using a digital multimeter of the affected output circuit is required to make sure the fault condition no longer exists.

This pinpoint test is intended to diagnose the following

1. Output circuit short
2. SJB

PINPOINT TEST A: DTCs B106E, B106F

1. A1 REVIEW THE DTCs NOTE: First follow the necessary diagnostics to resolve DTC B106E and any other present DTCs (ignoring B106F). DTC B106E is only present when there is another DTC due to software or circuitry issues that must be resolved before another self-test is run. DTC B106F is only present once the final threshold has been met. Failure to correct the fault condition first may cause damage to the new SJB, resulting in a repeat repair. Review the DTCs from the SJB self-test. Are any other DTCs present, besides B106E, B106F or B1342? Yes : CORRECT the DTCs. REFER to the «SMART JUNCTION BOX (SJB) DTC CHART»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules) . After the repair, GO to A2. No : GO to A2.
2. A2 REPEAT THE SJB SELF-TEST Ignition ON. Enter the following diagnostic mode on the scan tool: SJB Self-Test. Clear the DTCs and repeat the SJB self-test. Is DTC B106F or DTC B1342 present? Yes : INSTALL a new SJB. REFER to «SMART JUNCTION BOX (SJB)»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules) . TEST the system for normal operation. No : The system is operating correctly at this time. The circuit short has been repaired.

Pinpoint Test B: DTC B1317

Refer to OEM WIRING DIAGRAMS - REMOTE KEYLESS ENTRY & ALARM for schematic and connector information.

1. DTC B1317 (Battery Voltage High) - a continuous and on-demand DTC that sets when the SJB detects battery voltage above 15.5 volts.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. SJB

Note. DTC B1317 may be stored in the module memory due to previous battery charging or vehicle jump starting events.

1. B1 CHECK FOR DTCs B1317, B1676, P0563 OR U3003:17 SET IN OTHER MODULES Ignition ON. Enter the following diagnostic mode on the scan tool: (All Modules) Self-Test. Retrieve the continuous memory DTCs from all modules. Is DTC B1317, B1676, P0563 (PCM) or U3003:17 set in more than one module? Yes : REFER to «CHARGING SYSTEM»(/ford/econoline-e250/2012-2013/remont/charging-system/#charging-system) to diagnose an overcharging condition. No : GO to B2.
2. B2 CHECK THE BATTERY VOLTAGE Turn off all interior/exterior lights and accessories. Start and run the engine at approximately 2, 000 RPM for 3 minutes while monitoring the battery voltage. Does the battery voltage rise to 15.5 volts or higher? Yes : REFER to «CHARGING SYSTEM»(/ford/econoline-e250/2012-2013/remont/charging-system/#charging-system) to diagnose an overcharging condition. No : GO to B3.
3. B3 RECHECK FOR DTC B1317 Turn the engine off. Ignition ON. Enter the following diagnostic mode on the scan tool: SJB Self-Test. Clear the continuous memory DTCs. Carry out the SJB self-test. Is DTC B1317 present? Yes : INSTALL a new SJB. REFER to «SMART JUNCTION BOX (SJB)»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules) . TEST the system for normal operation. No : The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

Pinpoint Test C: DTC B1318

Refer to OEM WIRING DIAGRAMS - REMOTE KEYLESS ENTRY & ALARM for schematic and connector information.

1. DTC B1318 (Battery Voltage Low) - a continuous and on-demand DTC that sets when the SJB detects battery voltage below 10 volts.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. SJB

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 4

Scheme 5

1. C1 RECHECK THE SJB DTCs Ignition ON. Enter the following diagnostic mode on the scan tool: SJB Self-Test. Clear the DTCs. Repeat the SJB self-test. Is DTC B1318 still present? Yes : GO to C2. No : The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.
2. C2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM Enter the following diagnostic mode on the scan tool: PCM Self-Test. Retrieve the continuous memory DTCs from the PCM. Is DTC P0620, P0625, P0626 or P065B set in the PCM? Yes : REFER to «CHARGING SYSTEM»(/ford/econoline-e250/2012-2013/remont/charging-system/#charging-system) . No : GO to C3.
3. C3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE Ignition OFF. Check the battery condition and verify the battery is fully charged. Refer to «BATTERY, MOUNTING AND CABLES»(/ford/econoline-e250/2012-2013/remont/charging-system/#battery-battery-mounting-battery-cables) , Battery Condition Test. Is the battery OK and fully charged? Yes : GO to C4. No : REFER to «CHARGING SYSTEM»(/ford/econoline-e250/2012-2013/remont/charging-system/#charging-system) .
4. C4 CHECK THE SJB VOLTAGE SUPPLY Measure and record the voltage at the battery. Disconnect: SJBC2280G. Ignition ON. Measure the voltage between the SJBC2280G-1, circuit SDC02 (RD), harness side and ground. Is the voltage within 0.2 volt of the recorded battery voltage? Yes : GO to C5. No : REPAIR the circuit for high resistance. CLEAR the DTC. REPEAT the self-test.
5. C5 CHECK THE SJB GROUND CIRCUIT Ignition OFF. Disconnect: Negative Battery Cable. Disconnect: SJBC2280D. Measure the resistance between the SJB and ground as follows: SJB Connector-Pin Circuit C2280D-7 GD133 (BK C2280D-8 GD133 (BK C2280D-12 GD133 (BK C2280D-24 GD133 (BK Are the resistances less than 5 ohms? Yes : CONNECT the negative battery cable. GO to C6. No : REPAIR the circuit for high resistance. CONNECT the negative battery cable. TEST the system for normal operation.
6. C6 CHECK FOR CORRECT SJB OPERATION Disconnect the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB. REFER to «SMART JUNCTION BOX (SJB)»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

1. DTC U0155 (Lost Communication With Instrument Panel Cluster (IC) Control Module) - a continuous DTC that sets when the SJB does not receive messaged data (loses communication) from the Instrument Cluster (IC) for longer than 5 minutes.

This pinpoint test is intended to diagnose the following

1. Module communication
2. SJB
3. IPC

PINPOINT TEST D: DTC U0155

1. D1 VERIFY CUSTOMER CONCERN Ignition ON. Verify that there is an observable symptom present. Is an observable symptom present? Yes : GO to D2. No : The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
2. D2 CHECK THE COMMUNICATION NETWORK Ignition ON. Enter the following diagnostic mode on the scan tool: Network Test. Carry out the network test. Does the IC pass the network test? Yes : GO to D3. No : REFER to «MODULE COMMUNICATIONS NETWORK»(/ford/econoline-e250/2012-2013/remont/communication-devices/#module-communications-network) , The IC Does Not Respond To The Scan Tool.
3. D3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST Check for recorded SJB DTCs from the self-test. Is DTC B1317 or B1318 recorded? Yes : For DTC B1317, GO to «PINPOINT TEST B»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules__pinpoint-test-b-dtc-b1317) . For DTC B1318, GO to «PINPOINT TEST C»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules__pinpoint-test-c-dtc-b1318) . No : GO to D4.
4. D4 RECHECK THE SJB DTCs NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out. Clear the DTCs. Repeat the SJB self-test. Is DTC U0155 still present? Yes : GO to D5. No : The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
5. D5 CHECK FOR DTC U0155 OR DTC U0155:00 SET IN OTHER MODULES Clear the DTCs. Ignition OFF. Ignition ON. Wait 10 seconds. Enter the following diagnostic mode on the scan tool: Self-Test. Retrieve the continuous memory DTCs from all modules. Is DTC U0155 or DTC U0155:00 set in any other module? Yes : INSTALL a new IC. REFER to «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(/ford/econoline-e250/2012-2013/remont/gauges-instrument-panels/#information-center-instrumentation-message-center-and-warning-chimes) . No : INSTALL a new SJB. REFER to «SMART JUNCTION BOX (SJB)»(/ford/econoline-e250/2012-2013/remont/cruise-control-systems/#multifunction-electronic-modules) .

Note. Steering column opening cover removed for clarity.

Scheme 6

Removal

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. For additional information, refer to MODULE CONFIGURATION . In the event that As-Built data entry is required (SJB does 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.

Note. The Tire Pressure Monitoring System (TPMS) functionality is integrated into the SJB.

Note. A new SJB is delivered in a "manufacturing mode" with 8 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 8 manufacturing mode DTCs. The 8 manufacturing mode DTCs are

1. 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.
2. B2477 (Module Configuration Failure)
3. B2868 (Left Front Tire Pressure Sensor Fault)
4. B2869 (Right Front Tire Pressure Sensor Fault)
5. B2870 (Right Rear Tire Pressure Sensor Fault)
6. B2871 (Left Rear Tire Pressure Sensor Fault)
7. B2A21 (One or More Configuration Files Missing Or Corrupt)
8. C2780 (ECU in Manufacturer Sub-State)

1. Upload the module configuration information from the SJB into the scan tool. For additional information, refer to «MODULE CONFIGURATION»(/ford/econoline-e250/2012-2013/remont/communication-devices/#module-configuration-system) .
2. Disconnect the 7 electrical connectors.
3. Remove the 3 nuts and the SJB.

Installation

1. Position the SJB and install the 3 nuts. Tighten to 5 Nm (44 lb-in).
2. Connect the 7 electrical connectors.
3. Download the SJB configuration information from the scan tool to the SJB. For additional information, refer to «MODULE CONFIGURATION»(/ford/econoline-e250/2012-2013/remont/communication-devices/#module-configuration-system) .
4. Train the tire pressure sensors. For additional information, refer to «WHEELS AND TIRES»(/ford/econoline-e250/2012-2013/remont/wheel-tire-system/#wheels-tires) .
5. Carry out the SJB self-test (must include an on-demand self-test) and then repeat the self-test to confirm all DTCs have been cleared.
6. Rotate the instrument panel dimmer switch from the full dim position to the dome ON position. This makes sure that all the displays are visible under all lighting conditions.

See also:
• ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL
• INFORMATION AND ENTERTAINMENT SYSTEMS
• CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS
• INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES
• PARKING AID
• ELECTRONIC ENGINE CONTROLS
• SUPPLEMENTAL RESTRAINT SYSTEM
• AUXILIARY BRAKE SYSTEM
• MODULE COMMUNICATIONS NETWORK
• STEERING COLUMN SWITCHES
• WHEELS AND TIRES
• GLASS, FRAMES AND MECHANISMS
• INTERIOR LIGHTING
• EXTERIOR LIGHTING
• INSTRUMENT CLUSTER AND PANEL ILLUMINATION
• HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS
• MODULE CONFIGURATION
• AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS
• CHARGING SYSTEM
• BATTERY, MOUNTING AND CABLES
• SMART JUNCTION BOX (SJB) DTC CHART
• DTC CHARTS
• DIAGNOSTIC TROUBLE CODE (DTC) CHART
• SYMPTOM CHART
• PINPOINT TEST A
• PINPOINT TEST B
• PINPOINT TEST C
• PINPOINT TEST D