Multifunction Electronic Modules: Diagnosis Ford Escape I facelift 2

Diagnostic Trouble Code (DTC) Chart

Note. Most powertrain (P-code) DTCs are diagnosed in the Powertrain article. If the P-code retrieved is not listed below, refer to the INTRODUCTION - GASOLINE MODELS to continue diagnostics.

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

Note. Some of these modules utilize a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.

DTC CHART

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) Wiring, terminals or connectors
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»(ref-344076) , 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 key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(ref-344076) 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»(ref-344076) . 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»(ref-344077-S05378094932009101600000) . For all other DTCs, refer to the «DIAGNOSTIC TROUBLE CODE (DTC) CHART»(ref-344077-S08691291672009101600000) .
10. If no DTCs related to the concern are retrieved, verify the symptom. GO to «SYMPTOM CHART»(ref-344077-S03066978172009101600000) .

Smart Junction Box (SJB) DTC Chart

SMART JUNCTION BOX (SJB) DTC CHART

Symptom Chart

SYMPTOM CHART

PINPOINT TEST A: DTCs B106E/B106F

Note. If DTC B106F is present and the Smart Junction Box (SJB) is to be 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.

Note. 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 will be 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, one of the 3 thresholds is used. Once the 3 thresholds are used, DTCs B106F and B1342 will be present and the SJB must be replaced. All other DTCs MUST be resolved first, or else the new SJB will begin to have its 3 thresholds used with each self-test that is run.

1. 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 .
2. 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»(ref-344077-S08691291672009101600000) . REPEAT the self-test (on-demand DTCs). No: CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
3. 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»(ref-344077-S08691291672009101600000) . INSTALL a new SJB. REFER to «SMART JUNCTION BOX (SJB)»(ref-344077-S05387618772009101600000) . 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.

Pinpoint Test B: DTC B1317

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Power Distribution/SJB for schematic and connector information.

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

1. B1 CHECK FOR DTC B1317, B1676 OR P0563 SET IN OTHER MODULES Ignition ON. Enter the following diagnostic mode on the scan tool: (All CMDTCs) Self-Test. Retrieve the continuous memory DTCs from all modules. Is DTC B1317, B1676 or P0563 (PCM) set in more than one module? Yes: REFER to «CHARGING SYSTEM»(ref-344062) 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»(ref-344062) 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)»(ref-344077-S05387618772009101600000) . 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 SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Power Distribution/SJB for schematic and connector information.

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 86

Scheme 87

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»(ref-344062) . 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»(ref-344091) , Battery Condition Test. Is the battery OK and fully charged? Yes: GO to C4 . No: REFER to «CHARGING SYSTEM»(ref-344062) .
4. C4 CHECK THE SJB VOLTAGE SUPPLY Measure and record the voltage at the battery. Disconnect: SJB C2280G. Ignition ON. Measure the voltage between the SJB C2280G-1, circuit SBB02 (YE/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 DTCs. REPEAT the self-test.
5. C5 CHECK THE SJB GROUND CIRCUIT Ignition OFF. Disconnect: Negative Battery Cable. Disconnect: SJB C2280D. Measure the resistance between the SJB C2280D-7, 24, circuit GD182 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? Yes: GO to C6 . No: REPAIR the circuit for high resistance. TEST the system for normal operation.
6. C6 CHECK FOR CORRECT SJB OPERATION Connect: Negative Battery Cable. 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)»(ref-344077-S05387618772009101600000) . 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.

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»(ref-344076) .
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»(ref-344077-S18831350572009101600000) . For DTC B1318, GO to «PINPOINT TEST C»(ref-344077-S32281374162009101600000) . 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: INSTALL a new IC. REFER to «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-344081) . TEST the system for normal operation. REPEAT the SJB self-test. If DTC U0155 is still present, INSTALL a new SJB. No: The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.