Contents Section: Communication Devices All sections

Multifunction Electronic Modules System: Diagnosis Ford Taurus IV рестайлинг

Communication Devices 5 illustrations ~441 words

Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery junction box (BJB) fuse 3 (60A) Damaged wiring harness Loose or corroded connector(s) Circuitry Smart junction box (SJB)
  3. If an obvious cause of 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 diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle: check that the program card is correctly installed. check the connections to the vehicle. check the ignition switch position.
  5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with: ISO or CAN circuits fault; all electronic control units no response/not equipped, refer to «MODULE COMMUNICATIONS NETWORK»(ref-233719) . No response/not equipped for SJB, GO to «PINPOINT TEST A»(ref-233722-S41063773592006052600000) . System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the SJB.
  7. If the DTCs retrieved are related to the concern, go to the «DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-233722-S09894588382006052600000) .
  8. If no DTCs related to the concern are retrieved, refer to the appropriate article to continue diagnosis.

Diagnostic Trouble Code (DTC) Index

DTCDescriptionSourceAction
B1202Fuel Sender Circuit OpenInstrument ClusterREFER to INSTRUMENT CLUSTER .
B1204Fuel Sender Circuit Short to GroundInstrument ClusterREFER to INSTRUMENT CLUSTER .
B1205EIC Switch-1 Assembly Circuit FailureInstrument ClusterREFER to INSTRUMENT CLUSTER .
B1208EIC Switch-1 Assembly Circuit Short to GroundInstrument ClusterREFER to INSTRUMENT CLUSTER .
B1217Horn Relay Coil Circuit FailureSJBREFER to HORN .
B1218Horn Relay Coil Circuit Short to batterySJBREFER to HORN .
B1231Longitudinal Acceleration Threshold ExceededRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1249Blend Door FailureEATCREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1251Air Temperature Internal Sensor Circuit OpenEATCREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1253Air Temperature Internal Sensor Circuit Short to GroundEATCREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1255Air Temperature External Sensor Circuit OpenInstrument ClusterREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1257Air Temperature External Sensor Circuit Short to GroundInstrument ClusterREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1259Solar Radiation Sensor Circuit OpenEATCREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1261Solar Radiation Sensor Circuit Short to GroundEATCREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
B1302Accessory Delay Relay Coil Circuit FailureSJBREFER to GLASS, FRAMES AND MECHANISMS .
B1304Accessory Delay Relay Coil Circuit Short to BatterySJBREFER to GLASS, FRAMES AND MECHANISMS .
B1309Power Door Lock Circuit Short to GroundSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1314Battery Saver Relay Coil Circuit OpenSJBREFER to INTERIOR LIGHTING .
B1315Battery Saver Relay Coil Circuit Short to BatterySJBREFER to INTERIOR LIGHTING .
B1317Battery Voltage HighInstrument ClusterREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317Battery Voltage HighSJBREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317Battery Voltage HighRCMREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318Battery Voltage LowSJBREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318Battery Voltage LowInstrument ClusterREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318Battery Voltage LowRCMREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1322Driver Door Ajar Circuit Short to GroundSJBREFER to INTERIOR LIGHTING .
B1330Passenger Door Ajar Circuit Short to GroundSJBREFER to INTERIOR LIGHTING .
B1334Decklid Ajar Rear Door Circuit Short to GroundSJBREFER to INTERIOR LIGHTING .
B1338Door Ajar RR Circuit Short to GroundSJBREFER to INTERIOR LIGHTING .
B1341Power Door Unlock Circuit Short to GroundSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1342ECU Is DefectiveInstrument ClusterCLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test.
B1342ECU Is DefectiveRCMCLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM . CLEAR the DTCs. REPEAT the self-test.
B1342ECU Is DefectiveABS ModuleCLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new ABS Module. REFER to ANTI-LOCK CONTROL . CLEAR the DTCs. REPEAT the self-test.
B1342ECU Is DefectiveEATCCLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new EATC Module. REFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION . CLEAR the DTCs. REPEAT the self-test.
B1342ECU Is DefectiveSJBCLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER to SMART JUNCTION BOX (SJB) . CLEAR the DTCs. REPEAT the self-test.
B1345Heated Backlite Input Circuit Short to GroundSJBREFER to GLASS, FRAMES AND MECHANISMS .
B1347Heated Backlite Relay Circuit FailureSJBREFER to GLASS, FRAMES AND MECHANISMS .
B1349Heated Backlite Relay Short to BatterySJBREFER to GLASS, FRAMES AND MECHANISMS .
B1352Ignition Key-In Circuit FailureInstrument ClusterREFER to STEERING COLUMN SWITCHES .
B1352Ignition Key-In Circuit FailureSJBREFER to STEERING COLUMN SWITCHES .
B1359Ignition Run/Ace Circuit FailureSJBREFER to STEERING COLUMN SWITCHES .
B1371Illuminated Entry Relay Circuit FailureSJBREFER to INTERIOR LIGHTING .
B1373Illuminated Entry Relay Short to BatterySJBREFER to INTERIOR LIGHTING .
B1398Driver Power Window One Touch Window Relay Circuit FailureSJBREFER to GLASS, FRAMES AND MECHANISMS .
B1400Driver Power Window One Touch Window Relay Circuit Short to BatterySJBREFER to GLASS, FRAMES AND MECHANISMS .
B1405Driver Power Window Down Circuit Short to BatterySJBREFER to GLASS, FRAMES AND MECHANISMS .
B1408Driver Power Window Up Circuit Short to BatterySJBREFER to GLASS, FRAMES AND MECHANISMS .
B1432Wiper Brake/Run Relay Circuit Short to BatterySJBREFER to WIPERS AND WASHERS .
B1434Wiper Hi/Low Speed Relay Coil Circuit FailureSJBREFER to WIPERS AND WASHERS .
B1436Wiper Hi/Low Speed Relay Coil Circuit Short to BatterySJBREFER to WIPERS AND WASHERS .
B1438Wiper Mode Select Switch Circuit FailureSJBREFER to WIPERS AND WASHERS .
B1441Wiper Mode Select Switch Circuit Short to GroundSJBREFER to WIPERS AND WASHERS .
B1446Wiper Park Sense Circuit FailureSJBREFER to WIPERS AND WASHERS .
B1448Wiper Park Sense Circuit Short to BatterySJBREFER to WIPERS AND WASHERS .
B1450Wiper Wash/Delay Switch Circuit FailureSJBREFER to WIPERS AND WASHERS .
B1453Wiper Wash/Delay Switch Circuit Short to GroundSJBREFER to WIPERS AND WASHERS .
B1458Wiper Washer Pump Motor Relay Circuit FailureSJBREFER to WIPERS AND WASHERS .
B1460Wiper Washer Pump Motor Relay Coil Circuit Short to BatterySJBREFER to WIPERS AND WASHERS .
B1465Wiper Brake/Run Relay Circuit OpenSJBREFER to WIPERS AND WASHERS .
B1466Wiper Hi/Low Speed Not SwitchingSJBREFER to WIPERS AND WASHERS .
B1472Lamp Headlamp Input Circuit Short to GroundSJBREFER to EXTERIOR LIGHTING .
B1484Brake Pedal Input Open CircuitABS ModuleREFER to ANTI-LOCK CONTROL .
B1522Hood Switch Circuit Short to GroundSJBREFER to ANTI-THEFT - PERIMETER .
B1526Keyless Entry Circuit Short to GroundSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1551Decklid Release Circuit FailureSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1553Decklid Release Circuit Short to BatterySJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1554Decklid Release Circuit Short to GroundSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1555Ignition Run/Start Circuit FailureSJBREFER to STEERING COLUMN SWITCHES .
B1574Door Ajar LR Circuit Short to GroundSJBREFER to INTERIOR LIGHTING .
B1577Lamp Park Input Circuit Short to BatterySJBREFER to EXTERIOR LIGHTING .
B1623Lamp Keypad Output Circuit FailureSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1676Battery Voltage Out of RangeEATCREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1676Battery Voltage Out of RangeABS ModuleREFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1688Lamp Dome Input Circuit Short to GroundSJBREFER to INTERIOR LIGHTING .
B1696Autolamp On Circuit Short to GroundSJBREFER to EXTERIOR LIGHTING .
B1790Autolamp Sensor Input Circuit FailureSJBREFER to EXTERIOR LIGHTING .
B1833Door Unlock Disarm Switch Circuit Short to GroundSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1869Lamp Air Bag Warning Indicator Circuit OpenRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1870Lamp Air Bag Warning Indicator Circuit Short To BatteryRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1884PAD Warning Lamp Circuit FailureRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1890PAD Warning Lamp Circuit Short To BatteryRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1891Air Bag Tone Warning Indicator Circuit Short to BatteryRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1892Air Bag Tone Warning Indicator Circuit FailureRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1921Air Bag Diagnostic Monitor Ground Circuit OpenRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1982Driver Door Unlock Relay Circuit FailureSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1983Driver Door Unlock Relay Circuit Short to BatterySJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2097Compass Module FailureInstrument ClusterREFER to INSTRUMENT CLUSTER .
B2143Odometer NVM Checksum FailureInstrument ClusterREFER to INSTRUMENT CLUSTER .
B2183Wiper Mode Select Switch Circuit H Short to GroundSJBREFER to WIPERS AND WASHERS .
B2249Headlamp Relay Coil Short to BatterySJBREFER to EXTERIOR LIGHTING .
B2250All Doors Unlock Relay Circuit FailureSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2251Parklamp Output Relay Driver Circuit FailureSJBREFER to EXTERIOR LIGHTING .
B2252Parklamp Output Relay Driver Short to BatterySJBREFER to EXTERIOR LIGHTING .
B2290Occupant Classification System Fault Front Passenger SideRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2291Occupant Position Systems Status, Front Passenger SideRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2292Restraint System Seatbelt Pretensioner StatusRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2293Restraint System Airbag StatusRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2294Restraint System Curtain StatusRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2295Restraint System Side Airbag StatusRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2296Restraint System Impact Sensor StatusRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2425Remote Keyless Entry Out of SynchronizationSJBREFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2434Drivers Seat Belt Buckle Switch Circuit Short To GroundRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2435Drivers Seat Belt Buckle Switch Resistance Out Of RangeRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2438Passengers Seat Belt Buckle Switch Circuit Short to GroundRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2439Passengers Seat Belt Buckle Switch Resistance Out Of RangeRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2477Module Configuration FailureInstrument ClusterREFER to INSTRUMENT CLUSTER .
B2477Module Configuration FailureRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2598Headlamp Relay Circuit FailureSJBREFER to EXTERIOR LIGHTING .
B2691Front Drivers Seat Belt Buckle Switch Circuit FaultRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2692Front Passengers Seat Belt Buckle Switch Circuit FaultRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2909Belt Tension Sensor FaultRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1093Traction Control Disable Switch Circuit FailureInstrument ClusterREFER to ANTI-LOCK CONTROL .
C1145Speed Wheel Sensor RF Input Circuit FailureABS ModuleREFER to ANTI-LOCK CONTROL .
C1155Speed Wheel Sensor LF Input Circuit FailureABS ModuleREFER to ANTI-LOCK CONTROL .
C1165Speed Wheel Sensor RR Input Circuit FailureABS ModuleREFER to ANTI-LOCK CONTROL .
C1167Park Brake Actuator Assembly Switch Released Circuit Short to GroundSJBREFER to ANTI-LOCK CONTROL .
C1175Speed Wheel Sensor LR Input Circuit FailureABS ModuleREFER to ANTI-LOCK CONTROL .
C1189Brake Fluid Level Sensor Input Short Circuit to GroundSJBREFER to ANTI-LOCK CONTROL .
C1222Speed Wheel MismatchABS ModuleREFER to ANTI-LOCK CONTROL .
C1266ABS Valve Power Relay Circuit FailureABS ModuleREFER to ANTI-LOCK CONTROL .
C1284Oil Pressure Switch FailureInstrument ClusterREFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
C1296Wheel Speed LF Signal FaultABS ModuleREFER to ANTI-LOCK CONTROL .
C1297Wheel Speed RF Signal FaultABS ModuleREFER to ANTI-LOCK CONTROL .
C1298Wheel Speed RR Signal FaultABS ModuleREFER to ANTI-LOCK CONTROL .
C1299Wheel Speed LR Signal FaultABS ModuleREFER to ANTI-LOCK CONTROL .
C1300ABS Module Pump Motor Circuit FailureABS ModuleREFER to ANTI-LOCK CONTROL .
C1805Mismatched PCM and/or ABS/TC ModuleABS ModuleREFER to ANTI-LOCK CONTROL .
C1947Driver Seat Track Position Switch Circuit Short to GroundRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1948Driver Seat Track Position Switch Circuit Resistance Out Of RangeRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1981Front Drivers Seat Track Position Switch Circuit FaultRCMREFER to SUPPLEMENTAL RESTRAINT SYSTEM .
P0705Digital TR sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0708Digital TR sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0712171°C (340°F) indicated TFT sensor circuit grounded.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P071343°C (-45°F) indicated TFT sensor circuit open.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0715Insufficient input from Turbine Shaft Speed (TSS) Sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0717Insufficient input from Turbine Shaft Speed (TSS) sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0718TSS signal intermittent.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0720Insufficient input from OSS sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0721Output shaft speed sensor signal noisy.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0722Output shaft speed sensor signal intermittent.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0731SSA, SSB, or internal partsPCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P07322nd gear failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0733SSA, SSC, or internal partsPCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0734SSA, SSC, or internal partsPCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0741Converter Clutch Error.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0743TCC solenoid circuit failure during on-board diagnostic.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0750SSA solenoid circuit failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0753SSA solenoid circuit failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0755SSB solenoid circuit failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0756Shift Solenoid B functional failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0758SSB solenoid circuit failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0760SSC solenoid circuit failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0761Shift solenoid C functional failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P0763SSC solenoid circuit failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1112IAT sensor or circuit signal intermittent.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1117ECT sensor or circuit signal intermittent.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1700LOW OWCPCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1702Digital TR sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1704Digital TR sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1705Digital TR sensor.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1711TFT out of on-board diagnostic range.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1713No change in TFT - low range.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1714SSA failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1715SSB failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1716SSB failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1718No change in TFT - high range.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1740TCC failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1741Continuous slip ERROR.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1742TCC Solenoid Failed ON.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1743TCC Solenoid Failed ON.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1744Excessive slip detected.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1746EPCPCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1747EPC solenoid circuit failure, shorted circuit or output driver.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1751Shift solenoid A functional failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1756Shift solenoid B functional failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1760EPC solenoid circuit failure, shorted circuit or output driver.PCMRefer to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1761Shift solenoid C functional failure.PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1779Check Transaxle LampPCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1783Transaxle overtemp condition indicated (300°F).PCMREFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N .
P1882Engine Coolant Level Switch Circuit Short to GroundSJBREFER to ENGINE COOLING .
U0002High Speed CAN Communication Bus PerformanceInstrument ClusterBus timeout occured. INSPECT high speed CAN wiring and instrument cluster connections. REFER to MODULE COMMUNICATIONS NETWORK .
U0020Low Speed CAN Communication Bus PerformanceInstrument ClusterBus timeout occured. INSPECT CAN wiring and instrument cluster connections. REFER to MODULE COMMUNICATIONS NETWORK .
U0073Control Module Communication Bus OffEATCREFER to MODULE COMMUNICATIONS NETWORK .
U0073Control Module Communication Bus OffABS ModuleREFER to MODULE COMMUNICATIONS NETWORK .
U1900CAN Communication Bus Fault - Receive ErrorInstrument ClusterREFER to MODULE COMMUNICATIONS NETWORK .
U1900CAN Communication Bus Fault - Receive ErrorABS ModuleREFER to MODULE COMMUNICATIONS NETWORK .
U1900CAN Communication Bus Fault - Receive ErrorSJBREFER to MODULE COMMUNICATIONS NETWORK .
U1901CAN Network #2 Communication Bus Fault -Receive ErrorInstrument ClusterREFER to MODULE COMMUNICATIONS NETWORK .
U2006Audio Remote Climate Control Unit is Not RespondingEATCREFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
U2013Compass Module Not RespondingInstrument ClusterREFER to INSTRUMENT CLUSTER .
U2023Fault Received From External NodeInstrument ClusterREFER to MODULE COMMUNICATIONS NETWORK .
U2023Fault Received From External NodeABS ModuleREFER to MODULE COMMUNICATIONS NETWORK .

DIAGNOSTIC TROUBLE CODE (DTC) INDEX

Symptom Chart

ConditionPossible SourcesAction
No communication with the smart junction box (SJB)Battery junction box (BJB) fuse 3 (60A) Circuitry SJBGO to PINPOINT TEST A .

SYMPTOM CHART

Scheme 22

Scheme 22: PINPOINT TEST A: NO COMMUNICATION WITH THE SMART JUNCTION BOX (SJB)

Scheme 23

Scheme 23
  1. A1 CHECK THE SJB POWER CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: SJB C2280a. Key in ON position. Measure the voltage between the SJB C2280a pin 12, circuit 1001 (WH/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to A2 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  2. A2 CHECK THE SJB GROUND CIRCUIT FOR AN OPEN Key in OFF position. Connect: SJB C2280a. Disconnect: SJB C2280c. Measure the resistance between the SJB C2280c pin 18, circuit 57 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : REFER to «MODULE COMMUNICATIONS NETWORK»(ref-233719) to continue communication diagnosis. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the test.

Scheme 24

Scheme 24: Removal and Installation

Scheme 25

Scheme 25

Scheme 26

Scheme 26
  1. Disconnect the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-233724) .
  2. Disconnect the bulkhead connectors from the smart junction box (SJB).
  3. Disconnect the connectors from the bottom of the SJB.
  4. Remove the SJB. Remove the retaining nuts. Unclip and remove the SJB.
  5. To install, reverse the removal procedure.