Multifunction Electronic Modules System: Diagnosis

Diagnostic Trouble Code (DTC) Chart

DTC	Description	Source	Action
B200A	VSM Inclination Failure	SJB	REFER to ANTI-THEFT - PERIMETER .
B200B	VSM Ultrasonic Failure	SJB	REFER to ANTI-THEFT - PERIMETER .
B200C	VSM Module Failure	SJB	REFER to ANTI-THEFT - PERIMETER .
B236A	Chime Output Circuit Open	Instrument Cluster	REFER to WARNING DEVICES .
B1084	Trunk Lamp Circuit Failure	Smart Junction Box (SJB)	REFER to INTERIOR LIGHTING .
B1141	Convertible Top Full Down Position Switch Circuit Failure	SJB	REFER to CONVERTIBLE TOP .
B1142	Convertible Top Full Up Position Switch Circuit Failure	SJB	REFER to CONVERTIBLE TOP .
B1201	Fuel Sender Circuit Failure	SJB	REFER to INSTRUMENT CLUSTER .
B1202	Fuel Sender Circuit Open	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B1202	Fuel Sender Circuit Open	SJB	REFER to INSTRUMENT CLUSTER .
B1204	Fuel Sender Circuit Short to Ground	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B1205	EIC Switch-1 Assembly Circuit Failure	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B1217	Horn Relay Coil Circuit Failure	SJB	REFER to HORN .
B1231	Longitudinal Acceleration Threshold Exceeded	Restraint Control Module (RCM)	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1247	Panel Dim Switch Circuit Open	SJB	REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
B1300	Power Door Lock Circuit Failure	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1301	Power Door Lock Circuit Open	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1309	Power Door Lock Circuit Short to Ground	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1310	Power Door Unlock Circuit Failure	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1317	Battery Voltage High	Audio Control Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317	Battery Voltage High	Anti-Lock Brake System (ABS) Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317	Battery Voltage High	Instrument Cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317	Battery Voltage High	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318	Battery Voltage Low	Audio Control Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318	Battery Voltage Low	ABS Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318	Battery Voltage Low	Instrument Cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318	Battery Voltage Low	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1319	Driver's Door Ajar Circuit Failure	SJB	REFER to INTERIOR LIGHTING .
B1327	Passenger's Door Ajar Circuit Failure	SJB	REFER to INTERIOR LIGHTING .
B1341	Power Door Unlock Circuit Short To Ground	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1342	ECU is Faulted	Audio Control Module	CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new audio control module. REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION . CLEAR the DTCs. REPEAT the self-test.
B1342	ECU is Faulted	ABS Module	CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new ABS module. REFER to VEHICLE DYNAMIC SYSTEMS . CLEAR the DTCs. REPEAT the self-test.
B1342	ECU is Faulted	Instrument Cluster	CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test.
B1342	ECU is Faulted	RCM	CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM . CLEAR the DTCs. REPEAT the self-test.
B1342	ECU is Faulted	SJB	CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER Smart Junction Box (SJB) in this article. CLEAR the DTCs. REPEAT the self-test.
B1345	Heated Backlite Input Circuit Short to Ground	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B1348	Heated Backlite Relay Circuit Open	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B1349	Heated Backlite Relay Short To Battery (coil)	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B1353	Ignition Key-In Circuit Open	Instrument Cluster	REFER to WARNING DEVICES .
B1356	Ignition RUN Circuit Open	SJB	REFER to STEERING COLUMN SWITCHES .
B1360	Ignition RUN/ACC Circuit Open	SJB	REFER to STEERING COLUMN SWITCHES .
B1365	Ignition START Circuit Short to Battery	SJB	REFER to STEERING COLUMN SWITCHES .
B1402	Driver Power Window Down Switch Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B1470	Lamp Headlamp Input Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B1475	Accessory Delay Relay Short to Battery	SJB	REFER to INTERIOR LIGHTING .
B1485	Brake Pedal Input Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B1499	Lamp Turn Signal Left Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B1501	Lamp Turn Signal Left Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B1503	Lamp Turn Signal Right Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B1505	Lamp Turn Signal Right Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B1519	Hood Switch Circuit Failure	SJB	REFER to ANTI-THEFT - PERIMETER .
B1551	Latch/Decklid Release Circuit Failure	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B1556	Ignition RUN/START Circuit Open	Instrument Cluster	REFER to STEERING COLUMN SWITCHES .
B1557	Ignition RUN/START Circuit Short to Battery	Instrument Cluster	REFER to STEERING COLUMN SWITCHES .
B1676	Battery Pack Voltage Out of Range	SJB	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1833	Door Unlock Disarm Switch Circuit Short to Ground	SJB	REFER to ANTI-THEFT - PERIMETER .
B1869	Lamp Air Bag Warning Indicator Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1870	Lamp Air Bag Warning Indicator Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1884	PAD Warning Lamp Circuit Failure	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1890	PAD Warning Lamp Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1891	Air Bag Tone Warning Indicator Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1892	Air Bag Tone Warning Indicator Circuit Failure	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1897	Horn Switch Circuit Failure	SJB	REFER to HORN .
B1921	Air Bag Diagnostic Monitor Ground Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1982	Driver's Door Unlock Relay Circuit Failure	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2021	Dome Lamp Output Return Circuit Failure	SJB	REFER to INTERIOR LIGHTING .
B2027	LED Backlighting Output Circuit Failure	SJB	REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
B2030	Front Fog Lamp Relay Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2035	LF Side Repeater Lamp Output Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2036	LF Side Repeater Lamp Output Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2037	RF Side Repeater Lamp Output Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2038	RF Side Repeater Lamp Output Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2044	Left Rear Stop Lamp Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2045	Left Rear Stop Lamp Circuit Open	SJB	REFER to EXTERIOR LIGHTING .
B2046	Right Rear Stop Lamp Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2047	Right Rear Stop Lamp Circuit Open	SJB	REFER to EXTERIOR LIGHTING .
B2048	Left Rear Turn Lamp Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2049	Left Rear Turn Lamp Circuit Open	SJB	REFER to EXTERIOR LIGHTING .
B2050	Right Rear Turn Lamp Circuit Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2051	Right Rear Turn Lamp Circuit Open	SJB	REFER to EXTERIOR LIGHTING .
B2052	Accessory Delay Relay Output Failure	SJB	REFER to INTERIOR LIGHTING .
B2060	Heated Backlite Indicator Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B2061	Heated Backlite Indicator Circuit Shorted to Ground	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B2068	Convertible Top Up Output Circuit Failure	SJB	REFER to CONVERTIBLE TOP .
B2069	Convertible Top Down Output Circuit Failure	SJB	REFER to CONVERTIBLE TOP .
B2071	Hazard Switch Signal Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2078	Driver Airbag Deactivation Indicator Lamp Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2132	Dimmer Switch Circuit Short to Ground	SJB	REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
B2143	NVM Memory Failure	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B2175	A/C Request Signal Circuit Short to Ground	SJB	REFER to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION AND DIAGNOSTICS .
B2254	Front Fog Lamp Switch Failure	SJB	REFER to EXTERIOR LIGHTING .
B2276	Less Than 2 Transmitters Programmed	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2281	Right Turn Switch Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2282	Left Turn Switch Short to Ground	SJB	REFER to EXTERIOR LIGHTING .
B2290	Occupant Classification System Fault, Front Passenger side	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2291	Occupant Position System Fault, Front Passenger Side	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2292	Restraint System - Seatbelt Pretensioner Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2293	Restraint System - Airbag Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2295	Restraint System - Side Airbag Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2296	Restraint System - Impact Sensor Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2360	Window Motor Control Output Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B2401	Audio Tape Deck Mechanism Fault	Audio Control Module	VERIFY that no tape is inserted in the audio control module. CLEAR and DOCUMENT the DTCs. CARRY OUT the audio control module on-demand self-test. If DTC B2401 is retrieved again, REMOVE the audio control module. REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION . SEND it to an authorized repair facility. TEST the system for normal operation.
B2405	Audio Disc CD Player Thermal Shutdown Fault	Audio Control Module	REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION .
B2406	Audio Disc CD Player Internal Fault	Audio Control Module	REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION .
B2425	RKE Out of Synch	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2434	Drivers Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2435	Drivers Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2438	Passengers Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2439	Passengers Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2474	Passenger Door Lock Switch Circuit Short to Ground	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2475	Passenger Door Unlock Switch Circuit Short to Ground	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
B2477	ECU Configuration Failure	Audio Control Module	REFER to MODULE CONFIGURATION .
B2477	Module Configuration Failure	Instrument Cluster	REFER to MODULE CONFIGURATION .
B2477	Module Configuration Failure	RCM	REFER to MODULE CONFIGURATION .
B2477	Module Configuration Failure	SJB	REFER to MODULE CONFIGURATION .
B2479	Park Brake Switch Circuit Short to Ground	SJB	REFER to INSTRUMENT CLUSTER .
B2481	Convertible Top Up/Down Switch Fault	SJB	REFER to CONVERTIBLE TOP .
B2491	RF Park Lamp Output Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B2493	LF Park Lamp Output Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B2501	LF Lamp Low Beam Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2503	RF Lamp Low Beam Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2519	High Mount Stop Lamp Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2523	License Lamp Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2525	Left Rear Backup Lamp Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2527	Left Rear Stop Lamp Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2528	Left Rear Stop Lamp Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B2529	Left Rear Turn Lamp Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2532	Right Rear Backup Lamp Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B2533	Right Rear Stop Lamp Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2534	Right Rear Stop lamp Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING .
B2550	Lamp Dome Output Circuit Short to Ground	SJB	REFER to INTERIOR LIGHTING .
B2554	Lamp Dome Output Circuit Failure	SJB	REFER to INTERIOR LIGHTING .
B2569	Liftgate Disarm Switch Circuit Short to Ground	SJB	REFER to ANTI-THEFT - PERIMETER .
B2572	Brake Shift Interlock Output Circuit Failure	SJB	REFER to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS .
B2578	Passenger Power Window Down Switch Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS .
B2586	Headlamp Mode Select Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2598	Headlamp Relay Circuit Failure	SJB	REFER to EXTERIOR LIGHTING .
B2627	Fuel Sender Circuit Open #2	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B2627	Fuel Sender Circuit Open #2	SJB	REFER to INSTRUMENT CLUSTER .
B2628	Fuel Sender Circuit Short to Ground #2	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B2628	Fuel Sender Circuit Short to Ground #2	SJB	REFER to INSTRUMENT CLUSTER .
B2691	Seat Belt Buckle Switch Circuit Fault, Front Driver's side	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2692	Front Passenger's Seat Belt Buckle Switch Circuit Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2879	Fuel Tank Jet Pump Fault	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
B2903	Chime Output Circuit Short to Battery	Instrument Cluster	REFER to WARNING DEVICES .
B2909	Belt Tension Sensor Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2924	Audio Button Stuck	Audio Control Module	REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION .
B2940	Chime Output Circuit Short to Ground	Instrument Cluster	REFER to WARNING DEVICES .
B2965	Audio System Speaker Circuit Fault	Audio Control Module	REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION .
B2984	Deployable Steering Column Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2985	Deployable Steering Column Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2986	Deployable Steering Column Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2987	Deployable Steering Column Circuit Resistance Low on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1093	Traction Control Disable Switch Circuit Failure	Instrument Cluster	REFER to VEHICLE DYNAMIC SYSTEMS .
C1095	ABS Hydraulic Pump Motor Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1096	ABS Hydraulic Pump Motor Circuit Open	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1103	ABS Hydraulic Brake Switch Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1115	ABS Power Relay Output Short Circuit to Battery	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1145	Speed Wheel Sensor RF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1155	Speed Wheel Sensor LF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1165	Speed Wheel Sensor RR Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1175	Speed Wheel Sensor LR Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1185	ABS Power Relay Output Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1189	Brake Fluid Level Sensor Input Short Circuit To Ground	SJB	REFER to WARNING DEVICES .
C1194	ABS Outlet Valve Coil LF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1198	ABS inlet Valve Coil LF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1210	ABS Outlet Valve Coil RF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1214	ABS Inlet Valve Coil RF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1222	Speed Wheel Mismatch	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1233	Speed Wheel LF Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1234	Speed Wheel RF Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1235	Speed Wheel RR Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1236	Speed Wheel LR Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1242	ABS Outlet Valve Coil LR Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1246	ABS Outlet Valve Coil RR Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1250	ABS Inlet Valve Coil LR Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1254	ABS Inlet Valve Coil RR Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1404	Traction Control Valve Rear Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1410	Traction Control Valve LF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1414	Incorrect Module Design Level	RCM	INSTALL a new correct design level RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1446	Brake Switch Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1730	Reference Voltage out of Range (+5V)	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1947	Driver Seat Track Position Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1948	Driver Seat Track Position Switch Circuit Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1981	Seat Track Position Switch Circuit Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1991	Module Calibration Failure	ABS Module	REFER to MODULE CONFIGURATION .
U0073	Control Module Communication Bus Off	Audio Control Module	REFER to MODULE COMMUNICATIONS NETWORK .
U0073	Control Module Communication Bus Off	Instrument Cluster	REFER to MODULE COMMUNICATIONS NETWORK .
U0073	Control Module Communication Bus Off	SJB	REFER to MODULE COMMUNICATIONS NETWORK .
U0073	CAN Bus Off-Transmit Error	ABS Module	REFER to MODULE COMMUNICATIONS NETWORK .
U1900	CAN Communication Bus Fault-Receive Error	Audio Control Module	REFER to MODULE COMMUNICATIONS NETWORK .
U1900	CAN Communication Bus Fault-Receive Error	ABS Module	REFER to MODULE COMMUNICATIONS NETWORK .
U1900	CAN Communication Bus Fault-Receive Error	Instrument Cluster	REFER to MODULE COMMUNICATIONS NETWORK .
U1900	CAN Communication Bus Fault-Receive Error	SJB	REFER to MODULE COMMUNICATIONS NETWORK .
U2023	Fault Received From External Node	Instrument Cluster	REFER to MODULE COMMUNICATIONS NETWORK .
U2033	VSM Communication Link Failure	SJB	REFER to ANTI-THEFT - PERIMETER .
U2050	No Application Present	ABS Module	REFER to MODULE CONFIGURATION .
U2050	No Application Present	Instrument Cluster	REFER to MODULE CONFIGURATION .
U2051	One or More Calibration Files Missing / Corrupt	ABS Module	REFER to MODULE CONFIGURATION .

DIAGNOSTIC TROUBLE CODE (DTC) CHART

Inspection and Verification

Verify the customer concern.
Visually inspect for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Bussed electrical center (BEC) fuse(s): 44 (10A) 59 (30A) 62 (20A) 63 (30A) 67 (30A) Circuitry Smart junction box (SJB)
If an obvious cause of an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
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.
If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
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-256493) . No response/not equipped for SJB, GO to «PINPOINT TEST A»(ref-256487-S16335176032007061500000) . System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the SJB.
If the DTCs retrieved are related to the concern, go to the «DIAGNOSTIC TROUBLE CODE (DTC) CHART»(ref-256487-S34919600302007061500000) in this article
If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-256487-S31752722212007061500000) .

Symptom Chart

Condition	Possible Sources	Action
No communication with the smart junction box (SJB)	Fuse(s) Circuitry SJB	GO to PINPOINT TEST A .

SYMPTOM CHART

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

CAUTION

Use correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 1

Scheme 2

Scheme 3

A1 CHECK THE SJB C2280a CIRCUIT 1205 (BK) FOR AN OPEN Key in OFF position. Disconnect: SJB C2280a. Measure the resistance between the SJB C2280a-1, circuit 1205 (BK), harness side and ground. (Scheme 1): Checking SJB C2280A Circuit 1205 (BK) For Open Is the resistance less than 5 ohms? Yes: GO to A2. No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A2 CHECK THE SJB C2280h CIRCUITS 1205 (BK) FOR OPENS Disconnect: SJB C2280h. Measure the resistance between the SJB C2280h-8, circuit 1205 (BK), harness side and ground; and between the SJB C2280h-22, circuit 1205 (BK), harness side and ground. (Scheme 2): Checking SJB C2280H Circuits 1205 (BK) For Opens Are the resistances less than 5 ohms? Yes: GO to A3. No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
A3 CHECK THE SJB VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in ON position. Measure the voltage between the SJB C2280h, harness side and ground as follows: CONNECTOR PIN REFERENCE SJB C2280h Pin Circuit C2280h-1 294 (WH/LB) C2280h-11 1523 (DG) C2280h-29 1679 (WH/YE) C2280h-31 905 (GY/LB) C2280h-32 1052 (TN/BK) (Scheme 3): Checking SJB Voltage Supply Circuits For Open Are the voltages greater than 10 volts? Yes: REFER to «MODULE COMMUNICATIONS NETWORK»(ref-256493) to continue communication diagnosis. No: VERIFY the BEC fuse(s) 44 (10A), 59 (30A), 62 (20A), 63 (30A), and 67 (30A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

Identifying Smart Junction Box (SJB) Remove/Install Components - With Torque Specifications. Scheme 4

Scheme 4: Identifying Smart Junction Box (SJB) Remove/Install Components - With Torque Specifications

Multifunction Electronic Modules System: Diagnosis Ford Mustang V

Diagnostic Trouble Code (DTC) Chart

Inspection and Verification

Symptom Chart

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

Scheme 1

Scheme 2

Scheme 3

Identifying Smart Junction Box (SJB) Remove/Install Components - With Torque Specifications. Scheme 4

More articles — Multifunction Electronic Modules System

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