Smart Junction Box (SJB)

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

DTC	Description	Action
B106B	Tire Pressure Sensor Low Battery	Refer to TIRES & WHEELS article.
B106D	Tire Pressure Monitor System (TPMS) Initiators Not Configured	Refer to TIRES & WHEELS article.
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 .
B1138	Memory Full	Refer to ANTI-THEFT SYSTEM - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1139	Invalid Transmitter Identification Code	Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B1302	Accessory Delay Relay Coil Circuit Failure	Refer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
B1304	Accessory Delay Relay Coil Circuit Short To Battery	Refer to WINDOWS & GLASS - GLASS, FRAMES & MECHANISMS article.
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 article.
B1328	Passenger Door Ajar Circuit Open	Refer to INTERIOR LIGHTING SYSTEM article.
B1331	Decklid Ajar Rear Door Circuit Failure	Refer to INTERIOR LIGHTING SYSTEM article.
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 service information. TEST the system for normal operation.
B1352	Ignition Key-In Circuit Failure	Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
B1472	Lamp Headlamp Input Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B1485	Brake Pedal Input Short To Battery	Refer to EXTERIOR LIGHTING SYSTEM article.
B1510	Flash To Pass Switch Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B1520	Hood Switch Circuit Open	Refer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B1578	Lamp Park Input Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B1688	Lamp Dome Input Circuit Short To Ground	Refer to INTERIOR LIGHTING SYSTEM article.
B1696	Autolamp On Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B1791	Autolamp Sensor Input Circuit Open	Refer to EXTERIOR LIGHTING SYSTEM article.
B1793	Autolamp Sensor Input Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2008	Wipers On Signal Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2044	Left Rear Stop Lamp Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2046	Right Rear Stop Lamp Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2048	Left Rear Turn Lamp Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2050	Right Rear Turn Lamp Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2071	Hazard Switch Signal Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2100	Door Driver Key Cylinder Switch Failure	Refer to ANTI-THEFT SYSTEM - ANTI-THEFT PERIMETER article.
B2212	Panel Dim Switch Out of Range	Refer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
B2254	Front Fog Lamp Switch Failure	Refer to EXTERIOR LIGHTING SYSTEM article.
B2276	Less Than 2 Transmitters Programmed	Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B2281	Right Turn Switch Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2282	Left Turn Switch Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2425	Remote Keyless Entry Out of Synchronization	Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B2477	Module Configuration Failure	Carry out Programmable Module Installation (PMI) on the SJB . Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article.
B2479	Park Brake Switch Circuit Short To Ground	Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
B2498	Headlamp Switch Multiple Signals Input Active	Refer to EXTERIOR LIGHTING SYSTEM article.
B2572	Brake Shift Interlock Output Circuit Failure	Refer to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS article.
B2844	Ignition Fault	Refer to STEERING COLUMN SWITCHES article.
B2868	Left Front Tire Pressure Sensor Fault	Refer to TIRES & WHEELS article.
B2869	Right Front Tire Pressure Sensor Fault	Refer to TIRES & WHEELS article.
B2870	Right Rear Tire Pressure Sensor Fault	Refer to TIRES & WHEELS article.
B2871	Left Rear Tire Pressure Sensor Fault	Refer to TIRES & WHEELS article.
B2872	Tire Pressure Sensor Fault	Refer to TIRES & WHEELS article.
B287A	Tire Pressure System Fault	Refer to TIRES & WHEELS article.
B2A20	Ignition Stuck in STAR	Refer to STEERING COLUMN SWITCHES article.
B2A21	One or More Configuration Files Missing or Corrupt	Carry 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.
B2A22	Headlamp OFF Circuit Open	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A23	High Beam Input Circuit Short To Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A24	Turn Signal Input Circuit Failure	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A25	Trim Panel Lock Switch Circuit Failure	Refer to HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM article.
B2A27	Right Front Turn Lamp Circuit Open	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A28	Right Front Turn Lamp Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A29	Left Front Turn Lamp Circuit Open	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A2A	Left Front Turn Lamp Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A2B	Left Corner Lamp Output Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A2C	Right Corner Lamp Output Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A2E	Right Front Lamp Low Beam Circuit Open	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A2F	Right Front Lamp Low Beam Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A30	Left Front Lamp Low Beam Circuit Open	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A31	Left Front Lamp Low Beam Circuit Short to Ground	Refer to EXTERIOR LIGHTING SYSTEM article.
B2A32	LED Backlighting Output Circuit Open	Refer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
B2A33	LED Backlighting Output Circuit Short to Ground	Refer to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
B2A35	Interior Lighting Output Circuit Open	Refer to INTERIOR LIGHTING SYSTEM article.
B2A36	Interior Lighting Output Circuit Short to Ground	Refer to INTERIOR LIGHTING SYSTEM article.
B2A38	Floor Lamp Output Circuit Short to Ground	Refer to INTERIOR LIGHTING SYSTEM article.
B2A3A	Puddle Lamp Output Circuit Short to Ground	Refer to INTERIOR LIGHTING SYSTEM article.
P062F	Internal Control Module EEPROM Error	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 service information. TEST the system for normal operation.
C1125	Brake Fluid Level Sensor Input Circuit Failure	Refer to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
C2780	ECU in Manufacturer Sub-State	Refer to TIRES & WHEELS article.
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) 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.
U2472	Unexpected Ignition State	Refer to STEERING COLUMN SWITCHES article.
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 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.