Contents Section: Communication Devices All sections

Multifunction Electronic Module: Diagnosis Ford Mustang V рестайлинг

Communication Devices 5 illustrations ~3083 words

Master DTC Chart Index

ABS moduleRefer to ANTI-LOCK BRAKE SYSTEM - VEHICLE DYNAMIC SYSTEM article.
Audio Control Module (ACM)Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM article.
Accessory Protocol Interface Module (APIM)Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM article.
Body Control Module B (BCM-B)Refer to the DTC CHART in this service information.
Front Controls Interface Module (FCIM)Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM article.
Front Display Interface Module (FDIM)Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM article.
Global Positioning System Module (GPSM)Refer to DRIVER INFORMATION SYSTEM & ENTERTAINMENT SYSTEM article.
HVAC ModuleRefer to HVAC - CLIMATE CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS article.
Instrument Panel Cluster (IPC)Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
Occupant Classification System Module (OCSM)Refer to SUPPLEMENTAL RESTRAINT SYSTEM article.
PCMRefer to ELECTRONIC ENGINE CONTROL SYSTEM article.
Power Steering Control Module (PSCM)Refer to STEERING SYSTEM - ELECTRONIC POWER ASSIST STEERING (EPAS) article.
Restraints Control Module (RCM)Refer to SUPPLEMENTAL RESTRAINT SYSTEM article.
Smart Junction Box (SJB)Refer to the DTC CHART in this service information.

DIAGNOSTIC TROUBLE CODE (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 SJB
  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-439795) article, 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 in the ON state. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(ref-439795) article 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-439795) article. 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 the «SMART JUNCTION BOX (SJB) DTC CHART»(ref-439796-S18986492832011120900000) .
  10. If no DTCs related to the concern are retrieved, Go to «SYMPTOM CHART»(ref-439796-S18013498342011120900000) .

Smart Junction Box (SJB) DTC Chart

DTCDescriptionAction
B106BTire Pressure Sensor Low BatteryRefer to TIRES & WHEELS article.
B106DTire Pressure Monitor System (TPMS) Initiators Not ConfiguredRefer to TIRES & WHEELS article.
B106ESolid State Driver Disabled Due to Short CircuitGo to PINPOINT TEST A .
B106FModule Disabled Due to External FaultGo to PINPOINT TEST A .
B1138Memory FullRefer to ANTI-THEFT SYSTEM - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1139Invalid Transmitter Identification CodeRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B1302Accessory Delay Relay Coil Circuit FailureRefer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B1304Accessory Delay Relay Coil Circuit Short To BatteryRefer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B1317Battery Voltage HighGo to PINPOINT TEST B .
B1318Battery Voltage LowGo to PINPOINT TEST C .
B1320Driver Door Ajar Circuit OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1328Passenger Door Ajar Circuit OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1331Decklid Ajar Rear Door Circuit FailureRefer to INTERIOR LIGHTING SYSTEM article.
B1342ECU Is FaultedDIAGNOSE all other DTCs first. If no other DTCs are present, INSTALL a new SJB . Refer to SMART JUNCTION BOX (SJB) in this service information. TEST the system for normal operation.
B1352Ignition Key-In Circuit FailureRefer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
B1472Lamp Headlamp Input Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1485Brake Pedal Input Short To BatteryRefer to EXTERIOR LIGHTING SYSTEM article.
B1510Flash To Pass Switch Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1520Hood Switch Circuit OpenRefer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B1578Lamp Park Input Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1688Lamp Dome Input Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B1696Autolamp On Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1791Autolamp Sensor Input Circuit OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1793Autolamp Sensor Input Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2008Wipers On Signal Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2044Left Rear Stop Lamp Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2046Right Rear Stop Lamp Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2048Left Rear Turn Lamp Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2050Right Rear Turn Lamp Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2071Hazard Switch Signal Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2100Door Driver Key Cylinder Switch FailureRefer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B2212Panel Dim Switch Out of RangeRefer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
B2254Front Fog Lamp Switch FailureRefer to EXTERIOR LIGHTING SYSTEM article.
B2276Less Than 2 Transmitters ProgrammedRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B2281Right Turn Switch Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2282Left Turn Switch Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2425Remote Keyless Entry Out of SynchronizationRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B2477Module Configuration FailureCarry out Programmable Module Installation (PMI) on the SJB . Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article.
B2479Park Brake Switch Circuit Short To GroundRefer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
B2498Headlamp Switch Multiple Signals Input ActiveRefer to EXTERIOR LIGHTING SYSTEM article.
B2572Brake Shift Interlock Output Circuit FailureRefer to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS article.
B2844Ignition FaultRefer to STEERING COLUMN SWITCHES article.
B2868Left Front Tire Pressure Sensor FaultRefer to TIRES & WHEELS article.
B2869Right Front Tire Pressure Sensor FaultRefer to TIRES & WHEELS article.
B2870Right Rear Tire Pressure Sensor FaultRefer to TIRES & WHEELS article.
B2871Left Rear Tire Pressure Sensor FaultRefer to TIRES & WHEELS article.
B2872Tire Pressure Sensor FaultRefer to TIRES & WHEELS article.
B287ATire Pressure System FaultRefer to TIRES & WHEELS article.
B2A20Ignition Stuck in STARRefer to STEERING COLUMN SWITCHES article.
B2A21One or More Configuration Files Missing or CorruptCarry out Programmable Module Installation (PMI) on the SJB . Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article. CLEAR the DTCs. REPEAT the self-test. If DTC B2A21 is retrieved again, INSTALL a new SJB . Refer to SMART JUNCTION BOX (SJB) in this service information. TEST the system for normal operation.
B2A22Headlamp OFF Circuit OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B2A23High Beam Input Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A24Turn Signal Input Circuit FailureRefer to EXTERIOR LIGHTING SYSTEM article.
B2A25Trim Panel Lock Switch Circuit FailureRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B2A27Right Front Turn Lamp Circuit OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B2A28Right Front Turn Lamp Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A29Left Front Turn Lamp Circuit OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B2A2ALeft Front Turn Lamp Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A2BLeft Corner Lamp Output Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A2CRight Corner Lamp Output Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A2ERight Front Lamp Low Beam Circuit OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B2A2FRight Front Lamp Low Beam Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A30Left Front Lamp Low Beam Circuit OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B2A31Left Front Lamp Low Beam Circuit Short to GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B2A32LED Backlighting Output Circuit OpenRefer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
B2A33LED Backlighting Output Circuit Short to GroundRefer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
B2A35Interior Lighting Output Circuit OpenRefer to INTERIOR LIGHTING SYSTEM article.
B2A36Interior Lighting Output Circuit Short to GroundRefer to INTERIOR LIGHTING SYSTEM article.
B2A38Floor Lamp Output Circuit Short to GroundRefer to INTERIOR LIGHTING SYSTEM article.
B2A3APuddle Lamp Output Circuit Short to GroundRefer to INTERIOR LIGHTING SYSTEM article.
P062FInternal Control Module EEPROM ErrorCLEAR the DTCs. REPEAT the self-test. If DTC P062F is retrieved again, INSTALL a new SJB . Refer to SMART JUNCTION BOX (SJB) in this service information. TEST the system for normal operation.
C1125Brake Fluid Level Sensor Input Circuit FailureRefer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
C2780ECU in Manufacturer Sub-StateRefer to TIRES & WHEELS article.
U0155Lost Communication With Instrument Panel Cluster (IC) Control ModuleGo to PINPOINT TEST D .
U2050No Application PresentCarry out Programmable Module Installation (PMI) on the SJB . Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article. CLEAR the DTCs. REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new SJB . Refer to SMART JUNCTION BOX (SJB) in this service information. TEST the system for normal operation.
U2472Unexpected Ignition StateRefer to STEERING COLUMN SWITCHES article.
U2473Unexpected Vehicle Speed (VSS)NOTE: Sets during the self-test if vehicle speed exceeds 3 mph (5 kph) or vehicle speed cannot be determined by the SJB . VERIFY the speedometer operates correctly.If the speedometer does not operate correctly, Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.If the speedometer operates correctly, the self-test is carried out while the vehicle is moving. STOP the vehicle and REPEAT the self-test.
NOTE
Sets during the self-test if vehicle speed exceeds 3 mph (5 kph) or vehicle speed cannot be determined by the SJB .

SMART JUNCTION BOX (SJB) DTC CHART

Symptom Chart

ConditionPossible SourcesAction
No communication with the Smart Junction Box (SJB)Fuse Wiring, terminals or connectors SJBRefer to MODULE COMMUNICATIONS NETWORK article, The SJB Does Not Respond To The Scan Tool.

SYMPTOM CHART

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»(ref-439796-S18986492832011120900000) in this service information. 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)»(ref-439796-S37349774312011120900000) in this service information. 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 SYSTEM WIRING DIAGRAMS article, 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 DTCs B1317, B1676 OR P0563 SET IN OTHER MODULES Ignition ON. Enter the following diagnostic mode on the scan tool: 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-439785) article 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 volts or higher? Yes: Refer to «CHARGING SYSTEM»(ref-439785) article 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-439796-S37349774312011120900000) in this service information. 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 article, 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 results in false resistance readings. Refer to BATTERY, MOUNTING & CABLES article.

Scheme 85

Scheme 85: PINPOINT TEST C: DTC B1318

Scheme 86

Scheme 86
  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 due to a previous low battery voltage condition.
  2. C2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM Enter the following diagnostic mode on the scan tool: PCM Self-Test. Carry out the PCM KOEO self-test. Retrieve the continuous memory DTCs from the PCM. Is DTC P0562, P0620, P0622, P0625, P0626 or P065B set in the PCM? Yes: Refer to «CHARGING SYSTEM»(ref-439785) article. 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 & CABLES»(ref-439815) article. Is the battery OK and fully charged? Yes: Go to C4 . No: Refer to «CHARGING SYSTEM»(ref-439785) article.
  4. C4 CHECK THE SJB VOLTAGE PID Ignition ON. Measure and record the voltage at the battery. Enter the following diagnostic mode on the scan tool: SJB DataLogger. Monitor the SJB voltage PID (GEM_VBAT). Is the voltage within 0.2 volt of the recorded battery voltage? Yes: Go to C7 . No: Go to C5 .
  5. C5 CHECK THE SJB VOLTAGE SUPPLY Ignition OFF. Disconnect: SJB C2280g. Ignition ON. Measure the voltage between the SJB C2280g-1, circuit SBB01 (RD), harness side and ground. Is the voltage within 0.2 volt of the recorded battery voltage? Yes: Go to C6 . No: REPAIR circuit SBB01 (RD) for high resistance. CLEAR the DTC. REPEAT the self-test.
  6. C6 CHECK THE SJB GROUND CIRCUIT FOR HIGH RESISTANCE Ignition OFF. Disconnect: Negative Battery Cable. Disconnect: SJB C2280d. Measure the resistance between the SJB and ground as follows: RESISTANCE REFERENCE CHART SJB Connector-Pin Circuit C2280d-7 GD133 (BK) C2280d-8 GD139 (BK/YE) C2280d-12 GD139 (BK/YE) C2280d-24 GD139 (BK/YE) Are the resistances less than 5 ohms? Yes: Go to C7 . No: REPAIR the ground circuit in question for high resistance. CLEAR the DTC. REPEAT the self-test.
  7. C7 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)»(ref-439796-S37349774312011120900000) in this service information. 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 an 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 IPC pass the network test? Yes: Go to D3 . No: Refer to «MODULE COMMUNICATIONS NETWORK»(ref-439795) article, The IPC Does Not Respond To The Scan Tool.
  3. D3 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST Check for recorded SJB DTCs from the self-test. Is DTC B1317 or DTC B1318 recorded? Yes: For DTC B1317, Go to «PINPOINT TEST B»(ref-439796-S40270789562011120900000) . For DTC B1318, Go to «PINPOINT TEST C»(ref-439796-S23692836452011120900000) . 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 an intermittent fault condition.
  5. D5 CHECK FOR DTC U0155 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 set in any other module? Yes: INSTALL a new IPC. Refer to «INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES»(ref-439800) article. No: INSTALL a new SJB. Refer to «SMART JUNCTION BOX (SJB)»(ref-439796-S37349774312011120900000) in this service information.

Pinpoint Test D

D5 VCM
D8 BCM-B

Body Control Module B (BCM-B) DTC Chart

Note. This module utilizes 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.

DTCDescriptionAction
B109F:08Intrusion Sensor Module: Bus Signal/Message FailuresRefer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B109F:49Intrusion Sensor Module: Internal Electronic FailureRefer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B109F:55Intrusion Sensor Module: Not ConfiguredCarry out Programmable Module Installation (PMI) on the BCM-B . Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article.
B109F:97Intrusion Sensor Module: Component Or System Operation Obstructed Or BlockedRefer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B1219:11Interior Boot/Trunk Release Switch: Circuit Short To GroundRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B1265:23Left Rear Turn Lamp Feedback: Signal Stuck LowRefer to EXTERIOR LIGHTING SYSTEM article.
B1265:24Left Rear Turn Lamp Feedback: Signal Stuck HighRefer to EXTERIOR LIGHTING SYSTEM article.
B1266:23Right Rear Turn Lamp Feedback: Signal Stuck LowRefer to EXTERIOR LIGHTING SYSTEM article.
B1266:24Right Rear Turn Lamp Feedback: Signal Stuck HighRefer to EXTERIOR LIGHTING SYSTEM article.
B1267:11Convertible/Folding Top Activation Up Switch: Circuit Short To GroundRefer to CONVERTIBLE TOP article.
B1268:11Convertible/Folding Top Activation Down Switch: Circuit Short To GroundRefer to CONVERTIBLE TOP article.
B1269:11Convertible/Folding Top Fully Up Position Switch: Circuit Short To GroundRefer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B126D:15Convertible/Folding Top Fully Down Position Switch: Circuit Short To Battery Or OpenRefer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B126E:23Right Rear Window Fully Down Feedback: Signal Stuck LowRefer to CONVERTIBLE TOP article.
B126E:24Right Rear Window Fully Down Feedback: Signal Stuck HighRefer to CONVERTIBLE TOP article.
B126F:23Left Rear Window Fully Down Feedback: Signal Stuck LowRefer to CONVERTIBLE TOP article.
B126F:24Left Rear Window Fully Down Feedback: Signal Stuck HighRefer to CONVERTIBLE TOP article.
B1270:11High Mounted Stop Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1270:15High Mounted Stop Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1271:11Left Stop/Turn Inner Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1271:15Left Stop/Turn Inner Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1272:11Right Stop/Turn Inner Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1272:15Right Stop/Turn Inner Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1273:11Right Stop/Turn Middle Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1273:15Right Stop/Turn Middle Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1274:11Left Stop/Turn Middle Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1274:15Left Stop/Turn Middle Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1275:11Left Stop/Turn Outer Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1275:15Left Stop/Turn Outer Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1276:11Right Stop/Turn Outer Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1276:15Right Stop/Turn Outer Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1277:11Reverse Lamp: Circuit Short To GroundRefer to EXTERIOR LIGHTING SYSTEM article.
B1277:15Reverse Lamp: Circuit Short To Battery Or OpenRefer to EXTERIOR LIGHTING SYSTEM article.
B1278:12Convertible/Foldable Top Up Relay: Circuit Short To BatteryRefer to CONVERTIBLE TOP article.
B1278:14Convertible/Foldable Top Up Relay: Circuit Short To Ground Or OpenRefer to CONVERTIBLE TOP article.
B1279:12Convertible/Foldable Top Down Relay: Circuit Short To BatteryRefer to CONVERTIBLE TOP article.
B1279:14Convertible/Foldable Top Down Relay: Circuit Short To Ground Or OpenRefer to CONVERTIBLE TOP article.
B127A:12Global Window Control: Circuit Short To BatteryRefer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B127A:14Global Window Control: Circuit Short To Ground Or OpenRefer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B127B:11Ambient Lighting Zone 1 Output Red LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B127B:15Ambient Lighting Zone 1 Output Red LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B127C:11Ambient Lighting Zone 2 Output Red LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B127C:15Ambient Lighting Zone 2 Output Red LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B127D:11Ambient Lighting Zone 3 Output Red LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B127D:15Ambient Lighting Zone 3 Output Red LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B127E:11Ambient Lighting Zone 1 Output Green LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B127E:15Ambient Lighting Zone 1 Output Green LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B127F:11Ambient Lighting Zone 2 Output Green LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B127F:15Ambient Lighting Zone 2 Output Green LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1280:11Ambient Lighting Zone 3 Output Green LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B1280:15Ambient Lighting Zone 3 Output Green LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1281:11Ambient Lighting Zone 1 Output Blue LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B1281:15Ambient Lighting Zone 1 Output Blue LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1282:11Ambient Lighting Zone 2 Output Blue LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B1282:15Ambient Lighting Zone 2 Output Blue LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1283:11Ambient Lighting Zone 3 Output Blue LED: Circuit Short To GroundRefer to INTERIOR LIGHTING SYSTEM article.
B1283:15Ambient Lighting Zone 3 Output Blue LED: Circuit Short To Battery Or OpenRefer to INTERIOR LIGHTING SYSTEM article.
B1284:12Trunk/Boot Open Activation Request Hardwire: Circuit Short To BatteryRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B1284:14Trunk/Boot Open Activation Request Hardwire: Circuit Short To Ground Or OpenRefer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
P0801:11Reverse Inhibit Control Circuit: Circuit Short To GroundRefer to REAR VIEW MIRROR article.
P0801:12Reverse Inhibit Control Circuit: Circuit Short To BatteryRefer to REAR VIEW MIRROR article.
P0801:13Reverse Inhibit Control Circuit: Circuit OpenRefer to REAR VIEW MIRROR article.
P1571:12Brake Switch: Circuit Short To BatteryRefer to EXTERIOR LIGHTING SYSTEM article.
P2533:14Ignition Switch Run/Start Position Circuit: Circuit Short To Ground Or OpenGo to PINPOINT TEST E .
U0140:87Lost Communication With Body Control Module: Missing MessageGo to PINPOINT TEST F .
U0155:87Lost Communication With Instrument Panel Cluster (IPC) Control Module: Missing MessageGo to PINPOINT TEST G .
U0422:68Invalid Data Received From Body Control Module: Event InformationThis DTC is set when the BCM-B receives invalid data from the SJB . RETRIEVE and REPAIR all non-network DTCs in the SJB . Refer to the SMART JUNCTION BOX (SJB) DTC CHART in this service information.
U0423:68Invalid Data Received from Instrument Panel Cluster Control Module: Event InformationThis DTC is set when the BCM-B receives invalid data from the IPC . RETRIEVE and REPAIR all non-network DTCs in the IPC . Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
U1000:00Solid State Driver Protection Actived-Driver Disabled: No Sub Type InformationGo to PINPOINT TEST H .
U2100:55Initial Configuration Not Complete: Not ConfiguredCarry out Programmable Module Installation (PMI) on the BCM-B . Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article.
U3000:49Control Module: Internal Electronic FailureADDRESS all other DTCs first. CLEAR the DTCs. REPEAT the self-test. If DTC U3000:49 is retrieved again, INSTALL a new BCM-B . Refer to BODY CONTROL MODULE B (BCM-B) in this service information.
U3003:62Battery Voltage: Signal Compare FailureGo to PINPOINT TEST I .

BODY CONTROL MODULE B (BCM-B) DTC CHART

ConditionPossible SourcesAction
No communication with the Body Control Module B (BCM-B)Fuse Wiring, terminals or connectors BCM-BRefer to MODULE COMMUNICATIONS NETWORK article, The BCM-B Does Not Respond To The Scan Tool.

SYMPTOM CHART

Pinpoint Test E: DTC P2533:14

Refer to SYSTEM WIRING DIAGRAMS article, Fuse and Relay Information for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article, Interior Lamps for schematic and connector information.

PINPOINT TEST F: DTC U0140:87

  1. F1 VERIFY CUSTOMER CONCERN Ignition ON. Verify that there is an observable symptom present. Is an observable symptom present? Yes: Go to F2 . No: The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
  2. F2 CHECK THE COMMUNICATION NETWORK Ignition ON. Enter the following diagnostic mode on the scan tool: Network Test. Carry out the network test. Does the SJB pass the network test? Yes: Go to F3 . No: Refer to «MODULE COMMUNICATIONS NETWORK»(ref-439795) article, The SJB Does Not Respond To The Scan Tool.
  3. F3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST Check for recorded BCM-B DTCs from the self-test. Is DTC U3003:62 recorded? Yes: Go to «PINPOINT TEST I»(ref-439796-S14354752532011120900000) . No: Go to F4 .
  4. F4 RECHECK THE BCM-B 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 BCM-B self-test. Is DTC U0140:87 still present? Yes: Go to F5 . No: The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
  5. F5 CHECK FOR DTC U0140:87 SET IN OTHER MODULES Clear all 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 U0140:87 or DTC U0140 set in any other module? Yes: INSTALL a new SJB . Refer to «SMART JUNCTION BOX (SJB)»(ref-439796-S37349774312011120900000) in this service information. CLEAR the DTCs. REPEAT the BCM-B self-test. No: INSTALL a new BCM-B. Refer to «BODY CONTROL MODULE B (BCM-B)»(ref-439796-S33537160262011120900000) in this service information. TEST the system for normal operation.

PINPOINT TEST G: DTC U0155:87

  1. G1 VERIFY CUSTOMER CONCERN Ignition ON. Verify that there is an observable symptom present. Is an observable symptom present? Yes: Go to G2 . No: The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
  2. G2 CHECK THE COMMUNICATION NETWORK Ignition ON. Enter the following diagnostic mode on the scan tool: Network Test. Carry out the network test. Does the IPC pass the network test? Yes: Go to G3 . No: Refer to «MODULE COMMUNICATIONS NETWORK»(ref-439795) article, The IPC Does Not Respond To The Scan Tool.
  3. G3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST Check for recorded BCM-B DTCs from the self-test. Is DTC U3003:62 recorded? Yes: Go to «PINPOINT TEST I»(ref-439796-S14354752532011120900000) . No: Go to G4 .
  4. G4 RECHECK THE BCM-B 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 BCM-B self-test. Is DTC U0155:87 still present? Yes: Go to G5 . No: The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
  5. G5 CHECK FOR DTC U0155:87 SET IN OTHER MODULES Clear all 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 U0155:87 or DTC U0155 set in any other module? Yes: INSTALL a new IPC. Refer to «INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES»(ref-439800) article. CLEAR the DTCs. REPEAT the BCM-B self-test. No: INSTALL a new BCM-B . Refer to «BODY CONTROL MODULE B (BCM-B)»(ref-439796-S33537160262011120900000) in this service information. TEST the system for normal operation.

PINPOINT TEST H: DTC U1000:00

  1. H1 REVIEW THE DTCs NOTE: First follow the necessary diagnostics to resolve DTC U1000:00 and any other present DTCs (ignoring U3000:49). DTC U1000:00 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 U3000:49 is only present once the final threshold has been met. Failure to correct the fault condition first may cause damage to the new BCM-B , resulting in a repeat repair. Review the DTCs from the BCM-B self-test. Are any other DTCs present, besides U1000:00 or U3000:49? Yes: Refer to the «BODY CONTROL MODULE B (BCM-B) DTC CHART»(ref-439796-S23251757252011120900000) in this service information. After the repair, Go to H2 . No: Go to H2 .
  2. H2 REPEAT THE BCM-B SELF-TEST Ignition ON. Enter the following diagnostic mode on the scan tool: BCM-B Self-Test. Clear the DTCs and repeat the BCM-B self-test. Is DTC U3000:49 present? Yes: INSTALL a new BCM-B . Refer to «BODY CONTROL MODULE B (BCM-B)»(ref-439796-S33537160262011120900000) in this service information. TEST the system for normal operation. No: The system is operating correctly at this time. The circuit short has been repaired.

Pinpoint Test I: DTC U3003:62

Refer to SYSTEM WIRING DIAGRAMS article, Interior Lamps 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 results in false resistance readings. Refer to BATTERY, MOUNTING & CABLES article.

Note. DTC U3003:62 may be stored in the module memory due to previous battery charging or vehicle jump starting events.

Scheme 87

Scheme 87: PINPOINT TEST I: DTC U3003:62

Scheme 88

Scheme 88
  1. I1 RECHECK THE BCM-B DTCs Ignition OFF. Ignition ON. Enter the following diagnostic mode on the scan tool: BCM-B Self-Test. Clear the DTCs. Repeat the BCM-B self-test. Is DTC U3003:62 still present? Yes: Go to I2 . No: The system is operating normally at this time. The DTC may have been set due to a previous low battery voltage condition, during battery charging or while jump starting the vehicle.
  2. I2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM Enter the following diagnostic mode on the scan tool: PCM Self-Test. Carry out the PCM KOEO self-test. Retrieve the continuous memory DTCs from the PCM. Is DTC P0562, P0620, P0622, P0625, P0626 or P065B set in the PCM? Yes: Refer to «CHARGING SYSTEM»(ref-439785) article. No: Go to I3 .
  3. I3 CHECK FOR DTCs B1317, B1318 B1676, P0563 OR U3003:62 SET IN OTHER MODULES Enter the following diagnostic mode on the scan tool: 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»(ref-439785) article to diagnose the charging system condition. No: Go to I4 .
  4. I4 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 volts or higher? Yes: Refer to «CHARGING SYSTEM»(ref-439785) article to diagnose an overcharging condition. No: Go to I5 .
  5. I5 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 & CABLES»(ref-439815) article. Is the battery OK and fully charged? Yes: Go to I6 . No: Refer to «CHARGING SYSTEM»(ref-439785) article.
  6. I6 CHECK THE BCM-B VOLTAGE PID Ignition ON. Measure and record the voltage at the battery. Enter the following diagnostic mode on the scan tool: BCM-B DataLogger. Monitor the BCM-B voltage PID (VPWR_BCMB). Is the voltage within 0.2 volt of the recorded battery voltage? Yes: Go to I9 . No: Go to I7 .
  7. I7 CHECK THE BCM-B VOLTAGE SUPPLY Ignition OFF. Disconnect: BCM-B C4368a. Ignition ON. Measure the voltage between the BCM-B C4368a-1, circuit SBB18 (YE/RD), harness side and ground. Is the voltage within 0.2 volt of the recorded battery voltage? Yes: Go to I8 . No: REPAIR circuit SBB18 (YE/RD) for high resistance. CLEAR the DTC. REPEAT the self-test.
  8. I8 CHECK THE BCM-B GROUND CIRCUIT FOR HIGH RESISTANCE Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the BCM-B C4368a-13, circuit GD110 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to I9 . No: REPAIR circuit GD110 (BK/WH) for high resistance. CLEAR the DTC. REPEAT the self-test.
  9. I9 CHECK FOR CORRECT BCM-B OPERATION Disconnect the BCM-B connectors. Check for: corrosion damaged pins pushed-out pins Connect the BCM-B 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 BCM-B. Refer to «BODY CONTROL MODULE B (BCM-B)»(ref-439796-S33537160262011120900000) in this service information. 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.

Scheme 89

Scheme 89: Smart Junction Box (SJB)
ItemPart NumberDescription
1Smart Junction Box (SJB) Electrical connectors (part of 14A005) (2 required)
2SJB Electrical connectors (part of 14290) (3 required)
3SJB Electrical connectors (part of 14401) (2 required)
4W706287-SSJB nut
514B476SJB

SMART JUNCTION BOX (SJB) PARTS DESCRIPTION CHART