Honda Ridgeline. Manual — part 447
DTC
Description
ECU
DTC type
Page
22-84
Multiplex Integrated Control System
DTC Troubleshooting Index (cont’d)
B1063
Relay Control Module lost communication
with Combination Switch Control Unit
(WIPSW message)
Relay Control
Module
Loss of
Communication
(see page 22-71)
B1075
Headlight switch signal error
Relay Control
Module
Signal Error
(see page 22-168)
B1076
Windshield wiper signal error
Relay Control
Module
Signal Error
(see page 22-228)
B1077
Windshield wiper (As) signal error
Relay Control
Module
Signal Error
(see page 22-230)
B1078
Daytime Running Lights Signal Error
Relay Control
Module
Signal Error
(see page 22-170)
B1080
Power supply circuit (IG1 line) input error for
Relay Control Module and MICU
Relay Control
Module
Battery voltage
(see page 22-114)
B1100
Communication bus line error (BUS-OFF)
Door Multiplex
Control Unit
Loss of
Communication
(see page 22-110)
B1102
Door Multiplex Control Unit internal error
(EEPROM error)
Door Multiplex
Control Unit
Internal Error
(see page 22-115)
B1105
Door Multiplex Control Unit lost
communication with MICU (DOORSW
message)
Door Multiplex
Control Unit
Signal Error
(see page 22-116)
B1106
Door Multiplex Control Unit lost
communication with MICU (MICU message)
Door Multiplex
Control Unit
Signal Error
(see page 22-116)
B1125
Driver’s power window motor A pulse error
Door Multiplex
Control Unit
Signal Error
(see page 22-214)
B1126
Driver’s power window motor B pulse error
Door Multiplex
Control Unit
Signal Error
(see page 22-215)
B1127
Driver’s door lock key cylinder switch LOCK/
UNLOCK signal error
Door Multiplex
Control Unit
Signal Error
(see page 22-134)
B1128
Driver’s door lock switch LOCK/UNLOCK
signal error
Door Multiplex
Control Unit
Signal Error
(see page 22-136)
B1129
Driver’s door lock knob switch LOCK/
UNLOCK signal error
Door Multiplex
Control Unit
Signal Error
(see page 22-137)
B1140
Driver’s power window position detect
circuit error
Door Multiplex
Control Unit
Signal Error
(see page 22-216)
B1150
Communication bus line error (BUS-OFF)
Gauge Control
Module
Loss of
Communication
(see page 22-110)
B1152
Gauge Control Module internal error
(EEPROM error)
Gauge Control
Module
Internal Error
(see page 22-254)
B1155
Gauge Control Module lost communication
with Combination Switch Control Unit
(HLSW message)
Gauge Control
Module
Loss of
Communication
(see page 22-254)
B1156
Gauge Control Module lost communication
with Combination Switch Control Unit
(WIPSW message)
Gauge Control
Module
Loss of
Communication
(see page 22-254)
B1157
Gauge Control Module lost communication
with MICU (MICU message)
Gauge Control
Module
Loss of
Communication
(see page 22-255)
B1158
Gauge Control Module lost communication
with Relay Control Module (RM message)
Gauge Control
Module
Loss of
Communication
(see page 22-255)
B1159
Gauge Control Module lost communication
with MICU (DOORSW message)
Gauge Control
Module
Loss of
Communication
(see page 22-255)
DTC
Description
ECU
DTC type
Page
22-85
B1160
Gauge Control Module lost communication
with Door Multiplex Control Unit
(DRLOCKSW message)
Gauge Control
Module
Loss of
Communication
(see page 22-256)
B1168
Gauge Control Module lost communication
with PCM (ENG messages)
Gauge Control
Module
Loss of
Communication
(see page 22-257)
B1169
Gauge Control Module lost communication
with PCM (A/T messages)
Gauge Control
Module
Loss of
Communication
(see page 22-257)
B1170
Gauge Control Module lost communication
with VSA modulator-control unit (VSA
messages)
Gauge Control
Module
Loss of
Communication
(see page 22-258)
B1173
Gauge Control Module lost communication
with TPMS control unit (TPMS messages)
Gauge Control
Module
Loss of
Communication
(see page 22-259)
B1175
Fuel level sensor (Fuel gauge sending unit)
signals input error
Gauge Control
Module
Signal Error
(see page 22-260)
B1177
Abnormal battery voltage
Gauge Control
Module
Battery voltage
(see page 22-261)
B1178
F-CAN communication line error
Gauge Control
Module
Loss of
Communication
(see page 22-262)
B1200
Communication bus line error (BUS-OFF)
Climate Control
Unit
Loss of
communication
(see page 22-110)
B1202
Climate (HVAC) control unit internal error
(EEPROM error)
Climate Control
Unit
Internal error
(see page 21-100)
HVAC Control
Unit
(see page 21-20)
B1205
Climate (HVAC) control unit lost
communication with gauge control module
(VSP/NE message)
Climate Control
Unit
Loss of
communication
(see page 21-100)
HVAC Control
Unit
(see page 21-20)
B1206
Climate (HVAC) control unit lost
communication with gauge control module
(ENGTEMP message)
Climate Control
Unit
Loss of
communication
(see page 21-100)
HVAC Control
Unit
(see page 21-20)
B1207
Climate (HVAC) control unit lost
communication with gauge control module
(ILLUMI message)
Climate Control
Unit
Loss of
communication
(see page 21-100)
HVAC Control
Unit
(see page 21-20)
B1225
An open in the in-car temperature sensor
circuit
Climate Control
Unit
Signal Error
(see page 21-101)
B1226
A short in the in-car temperature sensor
circuit
Climate Control
Unit
Signal Error
(see page 21-103)
B1227
An open in the outside air temperature
sensor circuit
Climate Control
Unit
Signal Error
(see page 21-104)
HVAC Control
Unit
(see page 21-21)
B1228
A short in the outside air temperature sensor
circuit
Climate Control
Unit
Signal Error
(see page 21-105)
HVAC Control
Unit
(see page 21-22)
B1229
An open in the sunlight sensor circuit
Climate Control
Unit
Signal Error
(see page 21-106)
(cont’d)
DTC
Description
ECU
DTC type
Page
22-86
Multiplex Integrated Control System
DTC Troubleshooting Index (cont’d)
B1230
A short in the sunlight sensor circuit
Climate Control Unit
Signal Error
(see page 21-107)
B1231
An open in the evaporator temperature
sensor circuit
Climate Control Unit
Signal Error
(see page 21-108)
HVAC control unit
Signal Error
(see page 21-23)
B1232
A short in the evaporator temperature
sensor circuit
Climate Control Unit
Signal Error
(see page 21-110)
HVAC control unit
Signal Error
(see page 21-25)
B1233
An open in the driver’s air mix control
motor circuit
Climate Control Unit
Signal Error
(see page 21-111)
HVAC control unit
Signal Error
(see page 21-26)
B1234
A short in the driver’s air mix control
motor circuit
Climate Control Unit
Signal Error
(see page 21-112)
HVAC control unit
Signal Error
(see page 21-27)
B1235
A problem in the driver’s air mix control
linkage, doors, or motor
Climate Control Unit
Signal Error
(see page 21-113)
HVAC control unit
Signal Error
(see page 21-28)
B1236
An open in the passenger’s air mix
control motor circuit
Climate Control Unit
Signal Error
(see page 21-115)
B1237
A short in the passenger’s air mix
control motor circuit
Climate Control Unit
Signal Error
(see page 21-116)
B1238
A problem in the passenger’s air mix
control linkage, doors, or motor
Climate Control Unit
Signal Error
(see page 21-117)
B1239
An open or short in the mode control
motor circuit
Climate Control Unit
Signal Error
(see page 21-119)
HVAC control unit
Signal Error
(see page 21-30)
B1240
A problem in the mode control linkage,
doors, or motor
Climate Control Unit
Signal Error
(see page 21-121)
HVAC control unit
Signal Error
(see page 21-32)
B1241
A problem in the blower motor circuit
Climate Control Unit
Signal Error
(see page 21-122)
HVAC control unit
Signal Error
(see page 21-33)
B1250
Communication bus line error (BUS-
OFF)
Combination Switch
Control Unit
Loss of
Communication
(see page 22-110)
B1255
Combination Switch Control Unit lost
communication with MICU (MICU
message)
Combination Switch
Control Unit
Loss of
Communication
(see page 22-171)
B1275
Headlight switch OFF position circuit
malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-171)
B1276
Headlight switch parking (SMALL)
position circuit malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-172)
B1278
Headlight switch ON position circuit
malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-172)
B1279
Headlight switch dimmer position circuit
malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-173)
B1280
Turn signal switch circuit malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-173)
B1281
Windshield wiper switch MIST position
circuit malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-232)
B1282
Windshield wiper switch INT (AUTO)
position circuit malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-232)
B1283
Windshield wiper switch LOW position
circuit malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-232)
B1284
Windshield wiper switch HIGH position
circuit malfunction
Combination Switch
Control Unit
Signal Error
(see page 22-232)
01
SJC8A00J00050600000CAAT10
Body Controller Area Network (B-CAN) and Fast Controller Area Network (F-CAN)
22-87
System Description
Combination
Switch Control
Unit
MICU
Relay Control
Module
Door Multiplex
Control Unit
HVAC Control
Unit
Climate Control
Unit
B-CAN 33.33 kbps
F-CAN 500 kbps
Gauge Control
Module
Navigation
PCM
VSA
TPMS
VTM-4
The body controller area network (B-CAN) and the fast controller area network (F-CAN) share information between
multiple electronic control units (ECUs). B-CAN communication moves at a slower speed (33.33 kbps) for convenience
related items and for other functions. F-CAN information moves at a faster speed (500 kbps) for ‘‘real time’’ functions
such as fuel and emissions data. To allow both systems to share information, the gauge control module translates
information from B-CAN to F-CAN and from F-CAN to B-CAN.
The ECUs on the B-CAN and the F-CAN transmit and receive information in the form of structured messages that may
be received by several different ECUs on the network at one time. These messages are transmitted and received
across a communication circuit that consists of a single wire that is shared by all the ECUs on the circuit. Since
messages on the F-CAN are typically of higher importance, a second wire is used for communication circuit integrity
monitoring. A backup circuit is also added to the headlight and wiper circuits on the B-CAN in the event of a network
wire or ECU failure that would effect the operation of the system.
(cont’d)
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