Multifunction Electronic Module: Diagnosis — Ford Focus II (2005-2008)

Diagnostic Trouble Code Chart

DTC	Description	Source	Action
B1013	Occupant Classification System Calibration Fault	Restraints Control Module (RCM)	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1047	Driver Side, Side Mount Airbag Cross Linked to Another Firing Loop	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1048	Passenger Side Airbag Cross Linked to Another Firing Loop	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1049	Passenger Seatbelt Pretensioner Cross Linked to Another Firing Loop	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B104B	Driver Side Crash Sensor Cross Linked to Another Sensor	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B104C	Passenger Side Crash Sensor Cross Linked to Another Sensor	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B104D	Front Crash Sensor Cross Linked to Another Sensor	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B104E	Driver Side Crash Sensor Circuit Short to Ground/Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B104F	Passenger Crash Sensor Internal Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1050	Passenger Side Crash Sensor Circuit Short to Ground/Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1051	Driver Side Crash Sensor Internal Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1052	Passenger Seatbelt Buckle Switch Cross Linked to Another Sensor	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1053	Driver Seatbelt Buckle Switch Cross Linked to Another Sensor	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1054	Driver Seatbelt Pretensioner Cross Linked to Another Firing Loop	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1055	Passenger Side, Side Mount Airbag Cross Linked to Another Firing Loop	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1057	Driver Airbag Cross Linked to Another Firing Loop	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1058	Driver Airbag Cross Linked to Another Firing Loop - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1059	Passenger Airbag Cross Linked to Another Firing Loop - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B105A	Crash Counter - Reached Maximum	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1202	Fuel Sender Circuit Open	Instrument Cluster	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 .
B1231	Longitudinal Acceleration Threshold Exceeded	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1244	Wiper Rear Motor Run Relay Circuit Failure	Generic Electronic Module (GEM)	REFER to WIPERS AND WASHERS .
B1245	Wiper Rear Motor Run Relay Circuit Short to Battery	GEM	REFER to WIPERS AND WASHERS .
B1300	Power Door Lock Circuit Failure	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1309	Power Door Lock Circuit Short to Ground	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1310	Power Door Unlock Circuit Failure	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1315	Battery Saver Relay Coil Circuit Short to Ground	GEM	REFER to INTERIOR LIGHTING .
B1316	Battery Saver Relay Coil Circuit Short to Ground	GEM	REFER to INTERIOR LIGHTING .
B1317	Battery Voltage High	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317	Battery Voltage High	Instrument Cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1317	Battery Voltage High	Anti-Lock Brake System (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 .
B1318	Battery Voltage Low	ABS Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1319	Driver Door Ajar Circuit Failure	GEM	REFER to INTERIOR LIGHTING .
B1325	Door Ajar Lamp Circuit Short to Battery	GEM	REFER to INTERIOR LIGHTING .
B1326	Door Ajar Lamp Circuit Short to Ground	GEM	REFER to INTERIOR LIGHTING .
B1327	Passenger Door Ajar Circuit Failure	GEM	REFER to INTERIOR LIGHTING .
B1331	Decklid Ajar Rear Door Circuit Failure	GEM	REFER to INTERIOR LIGHTING .
B1335	Door Ajar RR Circuit Failure	GEM	REFER to INTERIOR LIGHTING .
B1341	Power Door Unlock Circuit Short to Ground	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1342	Instrument Cluster is Defective	Instrument Cluster	CLEAR 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.
B1342	RCM is Defective	RCM	CLEAR 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.
B1342	ABS Module is Defective	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 . CLEAR the DTCs. REPEAT the self-test.
B1342	GEM is Defective	GEM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new GEM. REFER to GENERIC ELECTRONIC MODULE (GEM) in this article. CLEAR the DTCs. REPEAT the self-test
B1343	Heated Back Light Input Circuit Failure	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B1349	Heated Backlight Relay Short to Battery	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B1350	Heated Backlight Relay Short to Ground	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B1352	Ignition Key-in Circuit Failure	GEM	REFER to WARNING DEVICES .
B1359	Ignition Run/Ace Failure	Instrument Cluster	REFER to STEERING COLUMN SWITCHES .
B1426	Lamp Seat Belt Circuit Short to Battery	GEM	REFER to INSTRUMENT CLUSTER .
B1428	Lamp Seat Belt Circuit Failure	GEM	REFER to INSTRUMENT CLUSTER .
B1438	Wiper Mode Select Switch Circuit Failure	GEM	REFER to WIPERS AND WASHERS .
B1446	Wiper Park Sense Circuit Failure	GEM	REFER to WIPERS AND WASHERS .
B1451	Wiper Wash/Delay Switch Circuit Open	GEM	REFER to WIPERS AND WASHERS .
B1470	Lamp Headlamp Input Circuit Failure	GEM	REFER to EXTERIOR LIGHTING .
B1499	Lamp Turn Signal Left Circuit Failure	GEM	REFER to EXTERIOR LIGHTING .
B1503	Lamp Turn Signal Right Circuit Failure	GEM	REFER to EXTERIOR LIGHTING .
B1519	Hood Switch Circuit Failure	GEM	REFER to ANTI-THEFT - PERIMETER .
B1549	Power Window Master Short to Battery	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B1550	Power Window Master Short to Ground	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B1551	Decklid Release Circuit Failure	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1553	Decklid Release Circuit Short to Battery	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1554	Decklid Release Circuit Short to Ground	GEM	REFER to HANDLES LOCKS LATCHES AND ENTRY SYSTEMS .
B1571	Door Ajar LR Circuit Failure	GEM	REFER to INTERIOR LIGHTING .
B1611	Wiper Rear Mode Select Switch Failure	GEM	REFER to WIPERS AND WASHERS .
B1810	Lamp Backup Switch Input Circuit Failure	GEM	REFER to EXTERIOR LIGHTING .
B1868	Lamp Air Bag Warning Indicator Circuit Failure	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1871	Passenger Air Bag Disable Module Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1875	Turn Signal/Hazard Switch Signal Circuit Failure	GEM	REFER to EXTERIOR LIGHTING .
B1877	Seat Belt Driver Pretensioner Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1878	Seat Belt Driver Pretensioner Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1879	Seat Belt Driver Pretensioner Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1881	Seat Belt Passenger Pretensioner Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1882	Seat Belt Passenger Pretensioner Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1883	Seat Belt Passenger Pretensioner Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1886	Seat Belt Passenger Pretensioner Circuit Resistance Low on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1890	PAD Warning Lamp Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1916	Air Bag Driver Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1921	Air Bag Diagnostic Monitor Ground Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1925	Air Bag Passenger Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1932	Air Bag Driver Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1933	Air Bag Passenger Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1934	Air Bag Driver Inflator Circuit Resistance Low on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1935	Air Bag Passenger Inflator Circuit Resistance Low on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1936	Air Bag Driver Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1938	Air Bag Passenger Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1992	Driver Side, Side Mount Air Bag Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1993	Driver Side, Side Mount Air Bag Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1994	Driver Side, Side Mount Air Bag Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1995	Driver Side, Side Mount Air Bag Low Resistance on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1996	Passenger Side, Side Mount Air Bag Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1997	Passenger Side, Side Mount Air Bag Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1998	Driver Side, Side Mount Air Bag Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B1999	Driver Side, Side Mount Air Bag Low Resistance on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2107	Front Wiper Motor Relay Circuit Short to Battery	GEM	REFER to WIPERS AND WASHERS .
B2108	Trunk Key Cylinder Switch Failure	GEM	REFER to ANTI-THEFT - PERIMETER .
B2110	Front Wiper Motor Relay Circuit Open	GEM	REFER to WIPERS AND WASHERS .
B2112	Door Driver Set Switch Stuck Failure	GEM	REFER to ANTI-THEFT - PERIMETER .
B2113	Heated Windshield Input Short to Ground	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B2114	Front Washer Input Short to Ground	GEM	REFER to WIPERS AND WASHERS .
B2115	Rear Washer Input Short to Ground	GEM	REFER to WIPERS AND WASHERS .
B2116	Door Driver Reset Switch Stuck Failure	GEM	REFER to ANTI-THEFT - PERIMETER .
B2141	NVM Memory Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
B2177	Interior Scanning Sensor Circuit Failure	GEM	REFER to ANTI-THEFT - PERIMETER .
B2226	Front Crash Sensor Internal Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2227	Front Crash Sensor Driver Communications Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2228	Air Bag Driver Circuit Short to Ground - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2229	Air Bag Passenger Circuit Short to Ground - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2230	Air Bag Driver Circuit Short to Battery - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2231	Air Bag Passenger Circuit Short to Battery - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2232	Air Bag Driver Circuit Open - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2233	Air Bag Passenger Circuit Open - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2234	Air Bag Driver Inflator Circuit Resistance Low on Squib - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2235	Air Bag Passenger Inflator Circuit Resistance Low on Squib - Loop 2	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2248	Heated Windshield Relay Coil Circuit Failure	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B2256	Front Window Heater Relay Short to Ground	GEM	REFER to GLASS FRAMES AND MECHANISMS .
B2279	Engine Run Signal Short to Battery	GEM	REFER to the INTRODUCTION - GASOLINE .
B2281	Right Turn Switch Short to Ground	GEM	REFER to EXTERIOR LIGHTING .
B2282	Left Turn Switch Short to Ground	GEM	REFER to EXTERIOR LIGHTING .
B2283	Turn Signal Chime Short to Battery	GEM	REFER to EXTERIOR LIGHTING .
B2284	Turn Signal Chime Short to Ground	GEM	REFER to EXTERIOR LIGHTING .
B2290	Occupant Classification System Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2369	Tone Request Short to Ground	GEM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2432	Driver Seat Belt Buckle Switch Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2433	Driver Seat Belt Buckle Switch Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2434	Driver Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2435	Driver Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2437	Passenger Seat Belt Buckle Switch Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2438	Passenger Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2439	Passenger Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2477	Module Configuration Failure	Instrument Cluster	REFER to MODULE CONFIGURATION .
B2477	Module Configuration Failure	RCM	REFER to MODULE CONFIGURATION .
B2494	Anti-Theft Horn Output Circuit Short to Battery	GEM	REFER to ANTI-THEFT - PERIMETER .
B2495	Anti-Theft Horn Output Circuit Failure	GEM	REFER to ANTI-THEFT - PERIMETER .
B2496	Anti-Theft Horn Output Circuit Short to Ground	GEM	REFER to ANTI-THEFT - PERIMETER .
B2555	Lamp Dome Output Circuit Short to Battery	GEM	REFER to INTERIOR LIGHTING .
B2855	Front Crash Sensor Circuit Short to Ground/Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2856	Front Crash Sensor ID Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2886	Passenger Side Crash Sensor ID Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
B2887	Driver Side Crash Sensor ID Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1095	ABS Hydraulic Pump Motor Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1141	Wheel Speed Sensor LF Tone Ring Tooth Missing Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1142	Wheel Speed Sensor RF Tone Ring Tooth Missing Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1143	Wheel Speed Sensor LR Tone Ring Tooth Missing Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1144	Wheel Speed Sensor RR Tone Ring Tooth Missing Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1145	Wheel Speed RF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1155	Wheel Speed LF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1165	Wheel Speed RR Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1175	Wheel Speed LR Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1233	LF Wheel Speed Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1234	RF Wheel Speed Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1235	RR Wheel Speed Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1236	LR Wheel Speed Input Signal Missing	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1267	ABS Functions Temporarily Disabled	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1277	Steering Wheel Angle 1 and 2 Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1278	Steering Wheel Angle 1 and 2 Signal Faulted	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1279	Yaw Rate Sensor Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1280	Yaw Rate Sensor Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1281	Lateral Accelerometer Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1282	Lateral Accelerometer Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1288	Pressure Transducer Main/Primary Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1306	Steering Wheel Angle - No Center Found During Initialization	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1307	Steering Wheel Angle Sensor Encoder Ring Defective	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1415	Incorrect Module Configuration	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1440	Pressure Transducer Main/Primary Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1446	Brake Switch Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1470	TCS Functions Temporarily Disabled	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1730	Reference Voltage Out of Range (+5V)	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1946	Driver Seat Track Position Switch Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1947	Seat Track Position Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1948	Seat Track Position Switch Circuit Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1962	TC/YC Switch Lamp Circuit Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C1981	Front Seat Track Position Switch Circuit Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1982	Seat Track Position Switch Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
C1994	ESP Continuous Operation	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C2741	Sensor Cluster Defective	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C2778	Sensor Cluster Voltage Supply Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
C2785	Sensor(s) Out of Calibration	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS .
P1197	Mileage Switch Circuit Failure	Instrument Cluster	REFER to INSTRUMENT CLUSTER .
P1778	Transmission Reverse I/P Circuit Malfunction	GEM	REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
U0073	Control Module Communication Bus Off	RCM	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U1900	CAN Communication Bus Fault	Instrument Cluster	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U1900	CAN Communication Bus Fault	ABS Module	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U1900	CAN Communication Bus Fault - Receive Error	RCM	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U1901	CAN Network 2, Communication Bus Fault - Receive Error	ABS Module	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2012	Communication Bus Error (Non SCP)	ABS Module	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2017	Driver Side Crash Sensor Communication Fault (Non SCP)	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM to diagnose no communication with the driver side crash sensor.
U2018	Passenger Side Crash Sensor Communication Fault (Non SCP)	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM to diagnose no communication with the passenger side crash sensor.
U2023	Fault Received From External Node	ABS Module	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2196	Invalid Data for Engine RPM	Instrument Cluster	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2197	Invalid Data for Vehicle Speed	Instrument Cluster	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2199	Invalid Data for Engine Coolant	Instrument Cluster	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2200	Invalid Data for Odometer	Instrument Cluster	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2202	Invalid Configuration Data Received	ABS Module	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.
U2527	CAN Network 2 Bus Off - Transmit Error	ABS Module	REPAIR all other DTCs first. CLEAR all DTCs. TEST the system. If the DTC is still present, REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communications network.

DIAGNOSTIC TROUBLE CODE INDEX

Inspection and Verification

Verify the customer concern.
Visually inspect for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Central junction box (CJB) fuse(s): 32 (15A) 63 (20A) Circuitry Connectors
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-255415) . No response/not equipped for GEM, GO to «PINPOINT TEST A»(ref-255417-S09530049502007053100000) . System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the GEM.
If the DTCs retrieved are related to the concern, go to the «DIAGNOSTIC TROUBLE CODE CHART»(ref-255417-S29879544562007053100000) in this article.
If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-255417-S20497920502007053100000) .

Symptom Chart

Condition	Possible Sources	Action
No communication with the generic electronic module (GEM)	Fuse(s) Circuitry GEM	GO to PINPOINT TEST A .

SYMPTOM CHART

PINPOINT TEST A: NO COMMUNICATION WITH THE GENERIC ELECTRONIC MODULE (GEM)

CAUTION

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

Scheme 16

Scheme 17

Scheme 18

A1 CHECK THE GEM CIRCUITS FOR VOLTAGE Key in OFF position. Disconnect: GEM C201c. Key in ON position. Measure the voltage between the GEM C201c-5, circuit 29-DK20 (OG/GN), harness side and ground; and between the GEM C201c-1, circuit 29-AA17 (OG/WH), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to A2 . No : VERIFY the CJB fuse(s) 32 (15A) and 63 (20A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
A2 CHECK THE GEM GROUND CIRCUIT 31-DK20 (BK) FOR AN OPEN Key in OFF position. Disconnect: GEM C201a. Measure the resistance between the GEM C201a-5, circuit 31-DK20 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to A3 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
A3 CHECK THE GEM GROUND CIRCUIT 91-DK20 (BK/RD) FOR AN OPEN Disconnect: GEM C201d. Measure the resistance between the GEM C201d-1, circuit 91-DK20 (BK/RD), harness side and ground. Is the resistance less than 5 ohms? Yes : REFER to «MODULE COMMUNICATIONS NETWORK»(ref-255415) to continue communication diagnosis. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.

Multifunction Electronic Module: Diagnosis Ford Focus II

Diagnostic Trouble Code Chart

Inspection and Verification

Symptom Chart

PINPOINT TEST A: NO COMMUNICATION WITH THE GENERIC ELECTRONIC MODULE (GEM)

Scheme 16

Scheme 17

Scheme 18

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