Honda Ridgeline. Manual — part 446
SJC8A00J00050600000BBAT00
Troubleshooting CAN Circuit Related Problems
Using the HDS (Preferred method)
Without HDS (Use only if the HDS is unavailable)
22-80
Multiplex Integrated Control System
General Troubleshooting Information
NOTE: Check the PCM for DTCs and troubleshoot PCM (see page 11-3) or F-CAN loss of communication errors first.
1. Go to B-CAN System Diagnosis Test Mode A to check for ‘‘Connected units’’ and DTCs (see page 22-99).
2. If no DTCs are retrieved, go to B-CAN System Diagnosis Test Mode C (see page 22-101) or D (see page 22-102).
1. Check for communication circuit problems using B-CAN System Diagnostic Test Mode 1 and Mode 2 (see page
22-103).
2. Check for DTCs (see page 22-103).
3. Sort, and then troubleshoot the DTCs in the order.
–1 Battery voltage DTCs
–2 Internal error DTCs
–3 Loss of communication DTCs
(beginning with the lowest number first; for example, if B1006 and B1059 are retrieved, troubleshoot B1006
first)
–4 Signal error DTCs
4. If no DTCs are retrieved, use B-CAN System Diagnostic Test Mode 2 to check all inputs related to failure (see page
22-103).
01
How to display DTCs on the gauge control module
How to clear the DTC
22-81
DTC detected (the lower four digits is
a decimal number representing the DTC)
No DTCs detected
All DTCs have been displayed
While in Test Mode 1, the DTCs which have been detected and stored individually by various B-CAN (Body-controller
Area Network) units, will be shown one by one on the multi-information display when the communication between the
MICU and the gauge control module is normal. To scroll through the DTCs, press the select/reset switch on the gauge
control module.
The unit that has stored the code can be identified by the number shown on the multi-information display.
MICU
10
Relay control module
11
Door multiplex control unit
30
Gauge control module
50
HVAC control unit/climate control unit
51
Combination switch control unit
70
While in Test Mode 1, press and hold down the SELECT/RESET switch button for more than 10 seconds.
(cont’d)
Loss of Communication DTC cross-reference chart
BUS OFF and Internal Error Codes
DTC Type
Related Unit
MICU
Relay Control
Module
Door Multiplex
Control Unit
Combination
Switch Control
Unit
Gauge Control
Module
HVAC Control Unit
or Climate Control
Unit
Transmitting Control
Unit
Message
Receiving Unit/Loss of Communication DTC
MICU
Relay Control
Module
Door Multiplex
Control Unit
Combination
Switch Control
Unit
Gauge Control
Module
HVAC Control
Unit or Climate
Control Unit
22-82
Multiplex Integrated Control System
General Troubleshooting Information (cont’d)
When an ECU is unable to communicate with the other ECUs on the CAN circuit, the other control units will set loss of communication DTCs.
Use this chart to find the control unit that is not communicating.
1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
2. Do the input test for the transmitting control unit.
BUS OFF
B1000
B1050
B1100
B1250
B1150
B1200
ECU (CPU) Error
B1001
ECU (EEPROM) Error
B1002
B1102
B1152
B1202
MICU
ALARM
B1056
MICU
B1055
B1106
B1255
B1157
DOOR SWITCH
B1057
B1105
B1159
Relay Control
Module
RELAY CONTROL
MODULE
B1005
B1158
Door Multiplex
Control Unit
PANIC
B1010
B1059
DRIVER’S DOOR
LOCK SWITCH
B1006
B1058
B1160
Combination Switch
Control Unit
HEADLIGHT SWITCH
B1007
B1062
B1155
WIPER SWITCH
B1063
B1156
Gauge Control
Module
VSP/NE
B1011
B1060
B1205
A/T
B1008
B1061
ENGTEP
B1206
PCM
ENG
B1168
AT
B1169
TPMS Control Unit TPMS
B1173
VSA Modulator-
control Unit
VSA
B1170
SJC8A00J14200000000GAAT00
DTC
Description
ECU
DTC type
Page
22-83
DTC Troubleshooting Index
NOTE: Check the PCM for DTCs and troubleshoot PCM or F-CAN loss of communication errors first (see page 11-3),
then record all DTCs, and sort them by DTC type using the DTC troubleshooting index, then troubleshoot the DTC(s) in
this order:
• Battery voltage DTCs
• Internal error DTCs
• Loss of communication DTCs (beginning with the lowest number first; for example, if B1006 and B1059 are retrieved,
troubleshoot B1006 first).
• Signal error DTCs
B1000
Communication bus line error (BUS-OFF)
MICU
Loss of
Communication
(see page 22-108)
B1001
MICU internal error (CPU error)
MICU
Internal Error
(see page 22-111)
B1002
MICU internal error (EEPROM error)
MICU
Internal Error
(see page 22-111)
B1005
MICU lost communication with Relay Control
Module
MICU
Loss of
Communication
(see page 22-111)
B1006
MICU lost communication with Door
Multiplex Control Unit (DRLOCKSW
message)
MICU
Loss of
Communication
(see page 22-112)
B1007
MICU lost communication with Combination
Switch Control Unit (HLSW message)
MICU
Loss of
Communication
(see page 22-112)
B1008
MICU lost communication with Gauge
Control Module (A/T message)
MICU
Loss of
Communication
(see page 22-113)
B1010
MICU lost communication with Door
Multiplex Control Unit (PANIC message)
MICU
Loss of
Communication
(see page 22-113)
B1011
MICU lost communication with gauge
control module (VSP/NE message)
MICU
Loss of
Communication
(see page 22-114)
B1026
Front passenger’s door lock switch LOCK/
UNLOCK signal error
MICU
Signal Error
(see page 22-133)
B1032
MICU
Signal Error
(see page 24-165)
B1050
Communication bus line error (BUS-OFF)
Relay Control
Module
Loss of
Communication
(see page 22-110)
B1055
Relay Control Module lost communication
with MICU (MICU message)
Relay Control
Module
Loss of
Communication
(see page 22-69)
B1056
Relay Control Module lost communication
with MICU (ALARM message)
Relay Control
Module
Loss of
Communication
(see page 22-69)
B1057
Relay Control Module lost communication
with MICU (DOORSW message)
Relay Control
Module
Loss of
Communication
(see page 22-69)
B1058
Relay Control Module lost communication
with Door Multiplex Control Unit
(DRLOCKSW message)
Relay Control
Module
Loss of
Communication
(see page 22-70)
B1059
Relay Control Module lost communication
with Door Multiplex Control Unit (PANIC
message)
Relay Control
Module
Loss of
Communication
(see page 22-70)
B1060
Relay Control Module lost communication
with Gauge Control Module (VSP/NE
message)
Relay Control
Module
Loss of
Communication
(see page 22-70)
B1061
Relay Control Module lost communication
with Gauge Control Module (A/T message)
Relay Control
Module
Loss of
Communication
(see page 22-70)
B1062
Relay Control Module lost communication
with Combination Switch Control Unit
(HLSW message)
Relay Control
Module
Loss of
Communication
(see page 22-71)
(cont’d)
MICU collision detection signal (CDS) input failure
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