B1002

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

   Is DTC B1002 indicated? 

   YES  -Faulty MICU; replace the under-dash fuse/relay box.

   NO  -Intermittent failure, the MICU is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition (see BATTERY ) and the charging system.

• Battery voltage DTCs
• Internal error DTCs
• Loss of communication DTCs (beginning with the lowest number first; for example, if B1008 and B1011 are retrieved, troubleshoot B1008 first).
• Signal error DTCs

MICU 

DTC	Description	DTC type
B1000	Communication bus line error (BUS-OFF)	Loss of communication
B1001	MICU internal error (CPU error)	Internal error
B1002	MICU internal error (EEPROM error)	Internal error
B1008	MICU lost communication with gauge control module (A/T message)	Loss of communication
B1011	MICU lost communication with gauge control module (VSP/NE message)	Loss of communication
B1026	Front passenger's door lock switch LOCK/UNLOCK signal error	Signal error
B1032	MICU lost communication with the SRS unit (CDS message) CDS (Collision detection signal) input circuit malfunction	Signal error
B1036	IG1 line input error	Signal error
B1077	Windshield wiper (As) signal error	Signal error
B1078	Daytime running lights signal error (Canada)	Signal error
B1127	Driver's door key cylinder switch signal error	Signal error
B1128	Driver's door lock switch signal error	Signal error
B1129	Driver's door lock knob switch signal error	Signal error
B1275	Combination light switch OFF position circuit malfunction ('07-09 models)	Signal error
B1276	Combination light switch parking (SMALL) position circuit malfunction ('07-09 models)	Signal error
B1278	Headlight switch ON position circuit malfunction ('07-09 models)	Signal error
B1279	Headlight switch DIMMER position circuit malfunction ('07-09 models)	Signal error
B1280	Turn signal switch circuit malfunction ('07-09 models)	Signal error
B1281	Windshield wiper switch MIST circuit malfunction ('07-09) models	Signal error
B1282	Windshield wiper switch INT circuit malfunction ('07-09) models	Signal error
B1283	Windshield wiper switch LOW circuit malfunction ('07-09) models	Signal error
B1284	Windshield wiper switch HIGH circuit malfunction ('07-09) models	Signal error

Gauge Control Module 

DTC	Description	DTC type
B1150	Communication bus line error (BUS-OFF)	Loss of communication
B1152	Gauge control module internal error (EEPROM error)	Internal error
B1155	Gauge control module lost communication with the MICU (Headlight switch message)	Loss of communication
B1156	Gauge control module lost communication with the MICU (Wiper switch message)	Loss of communication
DTC B1157	Gauge control module lost communication with the MICU (MICU message)	Loss of communication
B1159	Gauge control module lost communication with the MICU (DOORSW message)	Loss of communication
B1160	Gauge control module lost communication with the MICU (DRLOCKSW message)	Loss of communication
B1168	Gauge control module lost communication with the ECM/PCM (Engine messages)	Loss of communication
B1169	Gauge control module lost communication with the PCM (A/T message)	Loss of communication
B1170	Gauge control module lost communication with ABS/VSA modulator-control unit (ABS/VSA message)	Loss of communication
B1175	Fuel level sensor (Fuel gauge sending unit) circuit open	Signal error
B1176	Fuel level sensor (Fuel gauge sending unit) circuit short	Signal error
B1177	Battery voltage abnormal ('06 model)	Battery voltage
B1178	F-CAN communication line error	Loss of communication
B1183	Gauge control module lost communication with EPS control unit (EPS message)	Loss of communication
B1187	Gauge control module lost communication with the SRS unit (SRS message)	Loss of communication
B1188	Gauge control module lost communication with the MICU (RM message)	Loss of communication

Climate Control Unit 

DTC	Description	DTC type
B1200	Communication bus line error (BUS-OFF)	Loss of communication
B1202	Climate control unit internal error (EEPROM error)	Internal error
B1205	Climate control unit lost communication with the gauge control module (VSP/NE message)	Loss of communication
B1206	Climate control unit lost communication with the gauge control module (ECT message)	Loss of communication
B1207	Climate control unit lost communication with the gauge control module (ILLUMI message)	Loss of communication
B1220	Recirculation control motor circuit short	Signal error
B1225	In-car temperature sensor circuit open	Signal error
B1226	In-car temperature sensor circuit short	Signal error
B1227	Outside air temperature sensor circuit open	Signal error
B1228	Outside air temperature sensor circuit short	Signal error
B1229	Sunlight sensor circuit open	Signal error
B1230	Sunlight sensor circuit short	Signal error
B1231	Evaporator temperature sensor circuit open	Signal error
B1232	Evaporator temperature sensor circuit short	Signal error
B1233	Air mix control motor circuit open	Signal error
B1234	Air mix control motor circuit short	Signal error
B1235	Air mix control motor stuck	Signal error
B1239	Mode control motor circuit open or short	Signal error
B1240	Mode control motor, linkage, door malfunction	Signal error
B1241	Blower motor circuit malfunction	Signal error
B2983	Recirculation control motor, linkage, door malfunction	Signal error
B2986	Recirculation control motor circuit open	Signal error

HandsFreeLink Control Unit 

DTC	Description	DTC type
B1750	Communication bus line error (BUS-OFF)	Loss of communication
B1775	Microphone input/output short to power/open	Signal error
B1776	Microphone input/output short to ground/open	Signal error
B1779	HFL switch (HFL talk/HFL back buttons) circuit open/short	Signal error
B1780	HFL switch (HFL talk/HFL back buttons) circuit short	Signal error
B1792	HandsFreeLink control unit internal error	Internal error

Immobilizer-Keyless Control Unit 

DTC	Description	DTC type
B1900	Communication bus line error (BUS-OFF)	Loss of communication
B1905	Immobilizer-keyless control unit lost communication with the MICU (DRLOCKSW message)	Loss of communication
B1906	Immobilizer-keyless control unit lost communication with the gauge control module (A/T message)	Loss of communication
B1925	Ignition key switch signal error	Signal error

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

   Is DTC B1002 indicated? 

   YES  -Faulty MICU; replace the under-dash fuse/relay box.

   NO  -Intermittent failure, the MICU is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition (see BATTERY ) and the charging system.