Multifunction Electronic Modules System: Diagnosis

Diagnostic Trouble Code (DTC) Chart

Note. Most powertrain (P-code) DTCs are diagnosed in the Powertrain Control/Emissions Diagnosis (PC/ED) manual. If the P-code retrieved is not listed below, refer to the INTRODUCTION - GASOLINE ENGINES article to continue diagnostics.

DTC	Description	Source	Action
B106A	TPMS Sensor Pressure Range Bit Incorrect State	Smart Junction Box (SJB)	REFER to WHEELS AND TIRES article.
B106B	Tire Pressure Sensor Low Battery	SJB	REFER to WHEELS AND TIRES article.
B106E	Solid State Driver Disabled Due to Short Circuit	SJB	REFER to Smart Junction Box (SJB) in this article.
B106F	Module Disabled Due to External Fault	SJB	REFER to Smart Junction Box (SJB) in this article.
B1015	CEI Unconfigured	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1118	Passenger Front Crash Sensor Mount/Communication Fault	Restraints Control Module (RCM)	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1135	Passenger Front Crash Sensor Internal Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1139	Invalid Transmitter Identification Code	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1202	Fuel Sender Circuit Open	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1204	Fuel Sender Circuit Short to Ground	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1213	Anti-Theft Number of Programmed Keys is Below Minimum	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1231	Event Threshold Exceeded	Occupant Classification Module	INSTALL a new occupant classification module. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. TEST the system for normal operation.
B1231	Event Threshold Exceeded	RCM	INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. TEST the system for normal operation.
B1302	Accessory Delay Relay Coil Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1304	Accessory Delay Relay Coil Circuit Short to Battery	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1309	Power Door Lock Circuit Short to Ground	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1317	Battery Voltage High	Anti-Lock Brake System (ABS) Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
B1317	Battery Voltage High	Four-Wheel Drive (4WD) Control Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1317	Battery Voltage High	Instrument Cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1317	Battery Voltage High	Occupant Classification Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1317	Battery Voltage High	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1317	Battery Voltage High	SJB	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
B1318	Battery Voltage Low	Instrument Cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	Occupant Classification Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	SJB	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	4WD Control Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1319	Driver Door Ajar Circuit Failure	4WD Control Module	REFER to INTERIOR LIGHTING article.
B1322	Driver Door Ajar Circuit Short to Ground	SJB	REFER to INTERIOR LIGHTING article.
B1322	Driver Door Ajar Circuit Short to Ground	4WD Control Module	REFER to INTERIOR LIGHTING article.
B1330	Passenger Door Ajar Circuit Short to Ground	SJB	REFER to INTERIOR LIGHTING article.
B1338	Door Ajar RR Circuit Short to Ground	SJB	REFER to INTERIOR LIGHTING article.
B1341	Power Door Unlock Circuit Short to Ground	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1342	ECU is Faulted	ABS Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new ABS module. REFER to VEHICLE DYNAMIC SYSTEMS article. TEST the system for normal operation.
B1342	ECU is Faulted	Instrument Cluster	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER article. TEST the system for normal operation.
B1342	ECU is Faulted	Occupant Classification Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new occupant classification module. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. TEST the system for normal operation.
B1342	ECU is Faulted	RCM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. TEST the system for normal operation.
B1342	ECU is Faulted	SJB	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER to Smart Junction Box (SJB) in this article. TEST the system for normal operation.
B1342	ECU is Faulted	4WD Control Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new 4WD control module. REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article. TEST the system for normal operation.
B1352	Ignition Key-In Circuit Failure	Instrument Cluster	REFER to WARNING DEVICES article.
B1359	Ignition Run/Acc Circuit Failure	SJB	REFER to STEERING COLUMN SWITCHES article.
B1363	Ignition Start Circuit Failure	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1398	Driver Power Window One Touch Window Relay Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1400	Driver Power Window One Touch Window Relay Circuit Short to Battery	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1405	Driver Power Window Down Circuit Short to Battery	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1408	Driver Power Window Up Circuit Short to Battery	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1410	Driver Power Window Motor Circuit Failure	SJB	REFER to GLASS, FRAMES AND MECHANISMS article.
B1431	Wiper Brake/Run Relay Circuit Failure	SJB	REFER to WIPERS AND WASHERS article.
B1432	Wiper Brake/Run Relay Circuit Short to Battery	SJB	REFER to WIPERS AND WASHERS article.
B1434	Wiper Hi/Low Speed Relay Coil Circuit Failure	SJB	REFER to WIPERS AND WASHERS article.
B1436	Wiper Hi/Low Speed Relay Coil Circuit Short to Battery	SJB	REFER to WIPERS AND WASHERS article.
B1438	Wiper Mode Select Switch Circuit Failure	SJB	REFER to WIPERS AND WASHERS article.
B1446	Wiper Park Sense Circuit Failure	SJB	REFER to WIPERS AND WASHERS article.
B1458	Wiper Washer Pump Motor Relay Circuit Failure	SJB	REFER to WIPERS AND WASHERS article.
B1460	Wiper Washer Pump Motor Relay Coil Circuit Short to Battery	SJB	REFER to WIPERS AND WASHERS article.
B1466	Wiper Hi/Low Speed Not Switching	SJB	REFER to WIPERS AND WASHERS article.
B1470	Lamp Headlamp Input Circuit Failure	SJB	REFER to EXTERIOR LIGHTING article.
B1483	Brake Pedal Input Circuit Failure	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
B1485	Brake Pedal Input Short to Battery	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
B1485	Brake Pedal Input Short to Battery	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
B1522	Hood Switch Circuit Short to Ground	SJB	DISREGARD the DTC. It is not applicable for North American market.
B1555	Ignition Run/Start Circuit Failure	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
B1555	Ignition Run/Start Circuit Failure	SJB	REFER to STEERING COLUMN SWITCHES article.
B1569	Lamp Headlamp High-Beam Circuit Short to Battery	SJB	REFER to EXTERIOR LIGHTING article.
B1574	Door Ajar LR Circuit Short to Ground	SJB	REFER to INTERIOR LIGHTING article.
B1600	PATS Ignition Key Transponder Signal is Not Received	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1601	PATS Received Incorrect Key-Code From Ignition Key Transponder	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1602	PATS Received Invalid Format of Key-Code From Ignition Key Transponder	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1681	PATS Transceiver Module Signal is Not Received	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1688	Lamp Dome Input Circuit Short to Ground	SJB	REFER to INTERIOR LIGHTING article.
B1840	Wiper Front Power Circuit Failure	SJB	REFER to WIPERS AND WASHERS article.
B1871	Passenger Air Bag Disable Module Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1884	PAD Warning Lamp Circuit Failure	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1890	PAD Warning Lamp Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1897	Horn Switch Circuit Failure	SJB	REFER to HORN article.
B2030	Front Fog Lamp Relay CKT Failure	SJB	REFER to EXTERIOR LIGHTING article.
B2143	NVM Memory Failure	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B2143	NVM Memory Failure	SJB	CLEAR the DTCs. REPEAT the self-test. If DTC B2143 is retrieved again, INSTALL a new SJB. REFER to Smart Junction Box (SJB) in this article. TEST the system for normal operation.
B2179	Front Wiper Selector Switch "A" Short to Ground	SJB	REFER to WIPERS AND WASHERS article.
B2180	Front Wiper Selector Switch "B" Short to Ground	SJB	REFER to WIPERS AND WASHERS article.
B2181	Front Wiper Selector Switch "C" Short to Ground	SJB	REFER to WIPERS AND WASHERS article.
B2183	Front Wiper Selector Switch "H" Short to Ground	SJB	REFER to WIPERS AND WASHERS article.
B2184	Front Wiper Selector Switch "W" Short to Ground	SJB	REFER to WIPERS AND WASHERS article.
B2207	ECU ROM Checksum Error	Instrument Cluster	CLEAR the DTCs. REPEAT the self-test. If DTC B2207 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER article. TEST the system for normal operation.
B2261	Park Lamp Switch Failure	SJB	REFER to EXTERIOR LIGHTING article.
B2276	Less Than 2 Transmitters Programmed	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2290	Occupant Classification System Fault	Occupant Classification Module	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2290	Occupant Classification System Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2292	Restraint System - Seatbelt Pretensioner Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2293	Restraint System - Airbag Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2425	Remote Keyless Entry Out of Synchronization	SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2434	Drivers Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2435	Drivers Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2438	Passengers Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2439	Passengers Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2472	Fog Lamp Switch Failure	SJB	REFER to INTERIOR LIGHTING article.
B2477	Module Configuration Failure	Instrument Cluster	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	SJB	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	RCM	REFER to MODULE CONFIGURATION article.
B2512	Front Fog Lamp Relay CKT Short to Battery	SJB	REFER to EXTERIOR LIGHTING article.
B2607	Harness/Configuration Mismatch	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2675	Trip Reset Button Stuck	Instrument Cluster	CLEAR the DTCs. REPEAT the self-test. If DTC B2675 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER article. TEST the system for normal operation.
B2691	Seat Belt Buckle Switch Circuit Fault, Front Driver's Side	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2692	Front Passenger's Seat Belt Buckle Switch Circuit Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2792	Cross Link Between Firing Loops	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2868	Left Front Tire Pressure Sensor Fault	SJB	This DTC is only present when a new SJB is installed, the SJB is flashed, or the SJB is reconfigured. REFER to WHEELS AND TIRES article to CARRY OUT the tire pressure monitoring system (TPMS) sensor training in order to CLEAR the DTC.
B2869	Right Front Tire Pressure Sensor Fault	SJB	This DTC is only present when a new SJB is installed, the SJB is flashed, or the SJB is reconfigured. REFER to WHEELS AND TIRES article to CARRY OUT the tire pressure monitoring system (TPMS) sensor training in order to CLEAR the DTC.
B2870	Right Rear Tire Pressure Sensor Fault	SJB	This DTC is only present when a new SJB is installed, the SJB is flashed, or the SJB is reconfigured. REFER to WHEELS AND TIRES article to CARRY OUT the tire pressure monitoring system (TPMS) sensor training in order to CLEAR the DTC.
B2871	Left Rear Tire Pressure Sensor Fault	SJB	This DTC is only present when a new SJB is installed, the SJB is flashed, or the SJB is reconfigured. REFER to WHEELS AND TIRES article to CARRY OUT the tire pressure monitoring system (TPMS) sensor training in order to CLEAR the DTC.
B2872	Tire Pressure Sensor Fault	SJB	REFER to WHEELS AND TIRES article.
B2885	Spare Tire Pressure Sensor Fault	SJB	REFER to WHEELS AND TIRES article.
B287A	Tire Pressure System Fault	SJB	REFER to WHEELS AND TIRES article.
B2973	Daytime Running Lamp Output Shorted to Ground	SJB	REFER to EXTERIOR LIGHTING article.
C1095	ABS Hydraulic Pump Motor Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1096	ABS Hydraulic Pump Motor Circuit Open	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1126	Cruise Control Command Switch Assembly Circuit Failure	SJB	REFER to SPEED CONTROL article.
C1145	Speed Wheel Sensor RF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1148	Speed Wheel Sensor RF Coherency Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1155	Speed Wheel Sensor LF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1158	Speed Wheel Sensor LF Coherency Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1186	ABS Power Relay Output Open Circuit	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1187	Brake Fluid Level Sensor Input Open Circuit	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1194	ABS Outlet Valve Coil LF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1198	ABS Inlet Valve Coil LF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1210	ABS Outlet Valve Coil RF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1214	ABS Inlet Valve Coil RF Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1221	Lamp ABS Warning Output Circuit Short to Ground	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
C1226	Lamp Brake Warning Output Circuit Short to Ground	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
C1229	Speed Wheel Sensor Rear Center Coherency Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1230	Speed Wheel Sensor Rear Center Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1233	Speed Wheel LF Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1234	Speed Wheel RF Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1237	Speed Wheel Rear Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1246	ABS Outlet Valve Coil RR Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1254	ABS Inlet Valve Coil RR Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1266	ABS Valve Power Relay Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1414	Incorrect Module Design Level	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1414	Incorrect Module Design Level	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1446	Brake Switch Circuit Failure	SJB	REFER to EXTERIOR LIGHTING article.
C1728	Transfer Case Unable to Transition Between 2H and 4H	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
C1729	Transfer Case Unable to Transition Between 4H and 4L	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
C1941	Zero Seat Weight Test Failure	Occupant Classification Module	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1946	Front Driver's Seat Track Position Switch Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1947	Front Driver's Seat Track Position Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1948	Front Driver's Seat Track Position Switch Circuit Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1949	Accelerometer Sensor Circuit Open	ABS Module	CLEAR the DTCs. REPEAT the self-test. If DTC C1949 is retrieved again, INSTALL a new ABS module. REFER to VEHICLE DYNAMIC SYSTEMS article. TEST the system for normal operation.
C1950	Accelerometer Sensor Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1981	Front Driver's Seat Track Position Switch Circuit Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C2780	ECU in Manufacturer Sub-State	SJB	This DTC is only present when a new SJB is installed, the SJB is flashed, or the SJB is reconfigured. REFER to WHEELS AND TIRES article to CARRY OUT the tire pressure monitoring system (TPMS) sensor training in order to CLEAR the DTC.
C2784	RAM Checksum Failure	Instrument Cluster	CLEAR the DTCs. REPEAT the self-test. If DTC C2784 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER article. TEST the system for normal operation.
P1260	Theft Detected, Vehicle Immobilized	Powertrain Control Module (PCM)	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
P1707	Transfer Case Neutral or Park/Neutral Indication Circuit	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1812	4-Wheel Drive Mode Select Circuit Failure	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1815	4-Wheel Drive Mode Select Short Circuit to Ground	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1816	Transmission Neutral Safety Switch Circuit Failure	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1819	Transmission Neutral Safety Switch Short Circuit to Ground	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1849	Transfer Case Contact Plate A Short Circuit to Ground	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1853	Transfer Case Contact Plate B Short Circuit to Ground	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1857	Transfer Case Contact Plate C Short Circuit to Ground	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1861	Transfer Case Contact Plate D Short Circuit to Ground	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1867	Transfer Case Contact Plate General Circuit Failure	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
P1891	Transfer Case Contact Plate Ground Return Open Circuit	4WD Control Module	REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS article.
PXXXX	All other DTCs	PCM	REFER to the INTRODUCTION - GASOLINE ENGINES article.
U0002	High Speed CAN Communication Bus Performance	Instrument Cluster	REFER to MODULE COMMUNICATIONS NETWORK article.
U0100	Lost Communication With ECM/PCM	4WD Control Module	REFER to MODULE COMMUNICATIONS NETWORK article.
U0100	Lost Communication With ECM/PCM	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
U0100	Lost Communication With ECM/PCM	SJB	REFER to MODULE COMMUNICATIONS NETWORK article.
U0102	Lost Communication with Transfer Case Control Module (4x4CM)	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
U0140	Lost Communication With Body Control Module (GEM)	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
U0151	Lost Communication With Restraints Control Module	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	SJB	REFER to INSTRUMENT CLUSTER article.
U0300	Internal Control Module Software Incompatibility	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
U1900	CAN Communication Bus Fault - Receive Error	RCM	REFER to MODULE COMMUNICATIONS NETWORK article.
U2023	Fault Received From External Node	Instrument Cluster	REFER to MODULE COMMUNICATIONS NETWORK article.
U2023	Fault Received From External Node	4WD Control Module	REFER to MODULE COMMUNICATIONS NETWORK article.
U2023	Fault Received From External Node	SJB	RETRIEVE and FOLLOW non-network DTCs from other modules.
U2050	No Application Present	4WD Control Module	REFER to MODULE CONFIGURATION article.
U2050	No Application Present	Instrument Cluster	REFER to MODULE CONFIGURATION article.
U2050	No Application Present	Occupant Classification Module	REFER to MODULE CONFIGURATION article.
U2050	No Application Present	RCM	REFER to MODULE CONFIGURATION article.
U2050	No Application Present	SJB	REFER to MODULE CONFIGURATION article.
U2051	One or More Calibration Files Missing/Corrupt	Occupant Classification Module	CONFIGURE the occupant classification module. REFER to MODULE CONFIGURATION article. CLEAR the DTCs. REPEAT the self-test. If DTC U2051 is retrieved again, INSTALL a new occupant classification module. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. TEST the system for normal operation.
U2051	One or More Calibration Files Missing/Corrupt	RCM	CONFIGURE the RCM. REFER to MODULE CONFIGURATION article. CLEAR the DTCs. REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. TEST the system for normal operation.
U2472	Unexpected Ignition State	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
U2510	CAN - Invalid Data for Vehicle Security	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
U2511	CAN - Data Mis-Match (Receive Data Does Not Match Expected)	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.

Inspection and Verification

Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery junction box (BJB) fuse 1 (40A) Smart junction box (SJB) fuse 11 (10A) Circuitry
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 scan tool to the data link connector (DLC).
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-268766) article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(ref-268766) article to diagnose no response from the powertrain control module (PCM).
Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(ref-268766) article. If the network test passes, retrieve and record the continuous memory diagnostic trouble codes (DTCs).
Clear the continuous DTCs and carry out the self-test diagnostics for the SJB.
If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to «Diagnostic Trouble Code (DTC) Chart»(ref-268767-S09410068082007102600000) in this article.
If no DTCs related to the concern are retrieved, go to «Symptom Chart»(ref-268767-S10748859652007102600000) . SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC Description Action B106E Solid State Driver Disabled Due to Short Circuit Go to «Pinpoint Test A»(ref-268767-S27949831112007102600000) . B106F Module Disabled Due to External Fault Go to «Pinpoint Test A»(ref-268767-S27949831112007102600000) . B2477 Module Configuration Failure CONFIGURE the SJB. REFER to «MODULE CONFIGURATION»(ref-268778) article. CLEAR the DTCs. REPEAT self-test. If DTC B2477 is retrieved again, INSTALL a new SJB. REFER to «Smart Junction Box (SJB)»(ref-268767-S26433317572007102600000) in this article. TEST the system for normal operation. U0100 Lost Communication With ECM/PCM CLEAR the DTCs. CYCLE the key and wait for 10 seconds. REPEAT the self-test. If DTC U0100 is retrieved again, INSTALL a new PCM. REFER to «ELECTRONIC ENGINE CONTROLS»(ref-268735) article. TEST the system for normal operation. U0155 Lost Communication With Instrument Panel Cluster (IC) Control Module CLEAR the DTCs. CYCLE the key and wait for 10 seconds. REPEAT self-test. If DTC U0155 is retrieved again, INSTALL a new instrument cluster. REFER to «INSTRUMENT CLUSTER»(ref-268777) article. TEST the system for normal operation. U2050 No Application Present CONFIGURE the SJB. REFER to «MODULE CONFIGURATION»(ref-268778) article. CLEAR the DTCs. REPEAT self-test. If DTC U2050 is retrieved again, INSTALL a new SJB. REFER to «Smart Junction Box (SJB)»(ref-268767-S26433317572007102600000) in this article. TEST the system for normal operation. All other DTCs - REFER to «Diagnostic Trouble Code (DTC) Chart»(ref-268767-S09410068082007102600000) in this article.

Symptom Chart

Condition	Possible Sources	Action
The smart junction box (SJB) does not respond to the scan tool	Fuse Circuitry SJB	REFER to MODULE COMMUNICATIONS NETWORK article.

Symptom Chart

PINPOINT TEST A: DTC B106E - SOLID STATE DRIVER DISABLED DUE TO SHORT CIRCUIT

CAUTION

If DTC B106F is present and the SJB is to be replaced, the fault condition must be corrected first. Failure to correct the fault condition first may cause damage to the new SJB, resulting in a repeat repair.

A1 REVIEW THE DTCs Review the DTCs from the SJB self-test. Are only DTC B106E and DTC B106F present? YES : INSTALL a new SJB. REFER to «Smart Junction Box (SJB)»(ref-268767-S26433317572007102600000) in this article. TEST the system for normal operation. NO : CORRECT any DTCs present other than DTC B106E and DTC B106F. REFER to «Diagnostic Trouble Code (DTC) Chart»(ref-268767-S09410068082007102600000) in this article. After the repair, go to A2 .
A2 CARRY OUT THE SJB SELF-TEST Carry out the SJB self-test. Is DTC B106F present? YES : INSTALL a new SJB. Refer to «Smart Junction Box (SJB)»(ref-268767-S26433317572007102600000) in this article. TEST the system for normal operation. NO : The system is operating correctly at this time. The concern was caused by a fault in one of the output circuits.

Scheme 22

Scheme 22: Smart Junction Box (SJB)

Item	Part Number	Description
1		SJB main electrical connectors (part of 14401)
2		Electrical connector (part of 14401)
3		SJB screws (3 required)
4	14B476/15604	SJB

Multifunction Electronic Modules System: Diagnosis Ford Ranger II

Diagnostic Trouble Code (DTC) Chart

Inspection and Verification

Symptom Chart

PINPOINT TEST A: DTC B106E - SOLID STATE DRIVER DISABLED DUE TO SHORT CIRCUIT

Scheme 22

More articles — Multifunction Electronic Modules System

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