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Smart Junction Box (SJB)

SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action
B106A TPMS Sensor Pressure Range Bit Incorrect State Refer to WHEELS & TIRES .
B106B Tire Pressure Sensor Low Battery Refer to WHEELS & TIRES .
B106D Tire Pressure Monitor System (TPMS) Initiators Not Configured Refer to WHEELS & TIRES .
B106E Solid State Driver Disabled Due to Short Circuit GO to PINPOINT TEST A .
B106F Module Disabled Due to External Fault GO to PINPOINT TEST A .
B1302 Accessory Delay Relay Coil Circuit Failure Refer to GLASS, FRAMES AND MECHANISMS .
B1304 Accessory Delay Relay Coil Circuit Short to Battery Refer to GLASS, FRAMES AND MECHANISMS .
B1317 Battery Voltage High GO to PINPOINT TEST B .
B1318 Battery Voltage Low GO to PINPOINT TEST C .
B1320 Driver Door Ajar Circuit Open Refer to INTERIOR LIGHTING SYSTEM .
B1328 Passenger Door Ajar Circuit Open Refer to INTERIOR LIGHTING SYSTEM .
B1336 Door Ajar RR Circuit Open Refer to INTERIOR LIGHTING SYSTEM .
B1342 ECU is Faulted DIAGNOSE all other DTCs first. If no other DTCs are present, INSTALL a new SJB  . Refer to SMART JUNCTION BOX (SJB) in this information. TEST the system for normal operation.
B1352 Ignition Key-In Circuit Failure Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES .
B1472 Lamp Headlamp Input Circuit Short to Ground Refer to EXTERIOR LIGHTING SYSTEM .
B1485 Brake Pedal Input Short to Battery Refer to EXTERIOR LIGHTING SYSTEM .
B1510 Flash to Pass Switch Circuit Short to Ground Refer to EXTERIOR LIGHTING SYSTEM .
B1572 Door Ajar LR Circuit Open Refer to INTERIOR LIGHTING SYSTEM .
B1578 Lamp Park Input Circuit Short to Ground Refer to EXTERIOR LIGHTING SYSTEM .
B1685 Lamp Dome Input Circuit Failure Refer to INTERIOR LIGHTING SYSTEM .
B1688 Lamp Dome Input Circuit Short to Ground Refer to INTERIOR LIGHTING SYSTEM .
B2044 Left Rear Stop Lamp Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2045 Left Rear Stop Lamp Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2046 Right Rear Stop Lamp Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2047 Right Rear Stop Lamp Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2048 Left Rear Turn Lamp Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2049 Left Rear Turn Lamp Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2050 Right Rear Turn Lamp Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2051 Right Rear Turn Lamp Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2071 Hazard Switch Signal Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2212 Panel Dim Switch Out of Range INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION .
B2276 Less Than 2 Transmitters Programmed Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM .
B2281 Right Turn Switch Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2282 Left Turn Switch Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2425 Remote Keyless Entry Out Of Synchronization Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM .
B2477 Module Configuration Failure Carry out Programmable Module Installation (PMI) on the SJB  . Refer to MODULE CONFIGURATION .
B2479 Park Brake Switch Circuit Short to Ground Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES .
B2498 Headlamp Switch Multiple Signals Input Active Refer to EXTERIOR LIGHTING SYSTEM .
B2572 Brake Shift Interlock Output Circuit Failure Refer to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS .
B2844 Ignition Fault Refer to STEERING COLUMN SWITCHES .
B2868 Left Front Tire Pressure Sensor Fault Refer to WHEELS & TIRES .
B2869 Right Front Tire Pressure Sensor Fault Refer to WHEELS & TIRES .
B2870 Right Rear Tire Pressure Sensor Fault Refer to WHEELS & TIRES .
B2871 Left Rear Tire Pressure Sensor Fault Refer to WHEELS & TIRES .
B2872 Tire Pressure Sensor Fault Refer to WHEELS & TIRES .
B287A Tire Pressure System Fault Refer to WHEELS & TIRES .
B2A20 Ignition Stuck In START Refer to STEERING COLUMN SWITCHES .
B2A21 One or More Configuration Files Missing Or Corrupt Carry out Programmable Module Installation (PMI) on the SJB  . Refer to MODULE CONFIGURATION . 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 information. TEST the system for normal operation.
B2A22 Headlamp OFF Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2A23 High Beam Input Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2A24 Turn Signal Input Circuit Failure Refer to EXTERIOR LIGHTING SYSTEM .
B2A25 Trim Panel Lock Switch Circuit Failure Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM .
B2A27 Right Front Turn Lamp Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2A28 Right Front Turn Lamp Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2A29 Left Front Turn Lamp Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2A2A Left Front Turn Lamp Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2A2E Right Front Lamp Low Beam Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2A2F Right Front Lamp Low Beam Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2A30 Left Front Lamp Low Beam Circuit Open Refer to EXTERIOR LIGHTING SYSTEM .
B2A31 Left Front Lamp Low Beam Circuit Short To Ground Refer to EXTERIOR LIGHTING SYSTEM .
B2A32 LED Backlighting Output Circuit Open Refer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION .
B2A33 LED Backlighting Output Circuit Short To Ground Refer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION .
B2A35 Interior Lighting Output Circuit Open Refer to INTERIOR LIGHTING SYSTEM .
B2A36 Interior Lighting Output Circuit Short To Ground Refer to INTERIOR LIGHTING SYSTEM .
C2780 ECU In Manufacturer Sub-State Refer to WHEELS & TIRES .
P062F Internal Control Module EEPROM Error Carry Out Programmable Module Installation (PMI). Refer to MODULE CONFIGURATION . CLEAR the DTCs. REPEAT the self-test. If DTC P062F is retrieved again, INSTALL a new SJB  . Refer to SMART JUNCTION BOX (SJB) in this information. TEST the system for normal operation.
U0155 Lost Communication With Instrument Panel Cluster (IC) Control Module GO to PINPOINT TEST D .
U2050 No Application Present Carry Out Programmable Module Installation (PMI) for the SJB  . Refer to MODULE CONFIGURATION . 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 information. TEST the system for normal operation.
U2472 Unexpected Ignition State Refer to STEERING COLUMN SWITCHES .
U2473 Unexpected 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 .If the speedometer operates correctly, the self-test is carried out while the vehicle is moving. STOP the vehicle and REPEAT the self-test.
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