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Five-terminal type
22-71
3
1
42 3 1
42
5
5
1 5
4
3
2
Check for continuity between the terminals.
There should be continuity between terminals No. 1 and No. 2 when the battery positive terminal is
connected to terminal No. 5, and the battery negative
terminal is connected to terminal No. 3.
There should be continuity between terminals No. 1 and No. 4 when power is disconnected.
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Î
(#'
)
(#'
)
22-7222-72 Ignition Switch
Test
Replacement
B
WHT
BLU
ORN
RED
YEL A
Terminal
Position
II (ON)
I (ACC)
0 (LOCK) RED
(ACC)
WHT
(BAT)
ORN
(IG2)
BLU
(IG1) YEL
(ST)
III (START) A
B
SRS components are located in the area. Review the
SRS component locations (see page 24-11), and
precautions and procedures (see page 24-13) before
doing repairs or serving.
1. Do the battery terminal disconnection procedure (see page 22-68).
2. Remove the driver’s dashboard lower cover (see page 20-102), and the steering column covers
(see page 17-9).
3. Disconnect the 7P connector (A) from the ignition switch (B).
4. Check for continuity between the terminals in each switch position according to the table.
5. If the continuity checks do not agree with the table, replace the ignition switch (see page 22-72).
6. Do the battery terminal reconnection procedure (see page 22-68). SRS components are located in the area. Review the
SRS component locations (see page 24-11), and
precautions and procedures (see page 24-13) before
doing repairs or serving.
1. Do the battery terminal disconnection procedure (see page 22-68).
2. Remove the driver’s dashboard lower cover (see page 20-102), and the steering column covers
(see page 17-9).
3. Disconnect the 7P connector (A) from the ignition switch (B).
4. Remove the two screws and the ignition switch.
5. Install the parts in the reverse order of removal.
6. Do the battery terminal reconnection procedure (see page 22-68).
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Î
(#')
22-73
Multiplex Integrated Control System
Component Location Index
GAUGE CONTROL MODULE (TACH)
IMMOBILIZER-KEYLESS CONTROL UNIT
(With built-in the receiver)
MICU
(Built into the under-dash fuse/relay box) CLIMATE CONTROL
UNIT
HANDSFREELINK
CONTROL UNIT
Input Test, page 22-271
Input Test, page 22-109 Replacement, page 21-75
Self-diagnostic Function, page 23-368
Input Test, page 23-388
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(#')
Troubleshooting CAN Circuit Related Problems
Using the HDS (Preferred method)
Without HDS (Use only if the HDS is unavailable)
22-74Multiplex Integrated Control System
General Troubleshooting Information
NOTE: Check the ECM/PCM for DTCs and troubleshoot ECM/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 22-93).
2. If no DTCs are retrieved, go to B-CAN System Diagnosis Test Mode C (see page 22-95) or D (see page 22-96).
1. Check for communication circuit problems using B-CAN System Diagnostic Test (see page 22-97).
2. Check for DTCs.
3. Sort, and then troubleshoot the DTCs in the order. –1 Battery voltage DTCs
–2 Internal error DTCs
–3 Loss of communication DTCsNOTE: If the DTC B1000 is stored, troubleshoot DTC B 1000 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 step 10 on page 22-97).
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Î
How to display DTCs on the gauge control module (tach)
How to clear the DTC
22-75
No DTCs detectedAll DTCs have been displayed
DTC detected
(the letter and four digit number on the left
represents the DTC, the right two digit is the
unit code.)
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 odometer display when the communication between the MICU
and the gauge control module is normal. To scroll through the DTCs, press the select/reset button.
The unit that has stored the code can be identified by the number shown on the multi-information display.
MICU 10
Gauge control module 50
Climate control unit 51
HandsFreeLink control unit 94
Immobilizer-keyless control unit 96
While in Test Mode 1, press and hold down the SELECT/RESET button for more than 10 seconds.
(cont’d)
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Loss of Communication DTC cross-reference chart
BUS OFF and Internal Error CodesDTC type Related Unit MICU Gauge ControlModuleClimate Control
Unit HandsFreeLink
Control Unit Immobilizer-
Keyless Control Unit
Transmitting Control Unit Message Receiving Unit/Loss of Communication DTC
MICU Gauge ControlModuleClimate Control
Unit Immobilizer-
Keyless Control Unit
22-76Multiplex Integrated Control System
General Troubleshooting Information (cont’d)
When an ECU on the CAN circuit is unable to communicate with other ECUs on the CAN circuit, one or more of the
control units will set a loss of communications DTC. 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 B1150 B1200 B1750 B1900
ECU (CPU) Error B1001
ECU (EEPROM)
Error B1002 B1152 B1202
ECU (Internal)
Error B1792
MICU RM B1188 HLSW B1155
WIPSW B1156 MICU B1157
DOORSW B1159
DRLOCKSW B1160 B1905
Gauge Control
Module VSP/NE B1011 B1205
A/T B1008 B1906
CDS (SRS) B1032 ECT B1206
ECM/PCM ENG B1168 A/T B1169
ABS or VSA
modulator-
control unit ABS or VSA B1170
TPMS Control
unit TPMS B1173
EPS Control unit EPS B1183
SRS SRS B1187
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(#'
) MICUDTC Description DTC typePage
22-77
DTC Troubleshooting Index
NOTE: Check the ECM/PCM for DTCs and troubleshoot ECM/PCM (see page 11-3) or F-CAN loss of communication
errors first, 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 B1008 and B1011 are retrieved, troubleshoot B 1008 first).
Signal error DTCs
B1000 Communication bus line error (BUS-OFF) Loss of communication(see page 22-102)
B1001 MICU internal error (CPU error) (’06-08 models) Internal error (see page 22-103)
B1002 MICU internal error ( EEPROM error) Internal error (see page 22-103)
B1008 MICU lost communication with gauge control m odule (A/T
message) Loss of
communication(see page 22-104)
B1011 MICU lost communication with gauge control m odule (VSP/NE
message) Loss of
communication(see page 22-104)
B1026 Front passenger’s door lock switch LOCK/UNLOCK signal error Signal error (see page 22-120)
B1032 MICU lost communication with the SRS unit (CDS message) CDS (Collision detection signal) input circuit malfunction (’06-07
models) Signal error (see page 22-105)
B1036 IG1 line input error Signal error (see page 22-105)
B1077 Windshield wiper (As) signal error Signal error (see page 22-224)
B1078 Daytime r unning lights signal error Signal error (see page 22-157)
B1127 Driver’s door key cylinder switch signal error Signal error (see page 22-121)
B1128 Driver’s door lock switch signal error Signal error (see page 22-123)
B1129 Driver’s door lock knob switch signal error Signal error (see page 22-124)
B1275 Combination light switch OFF position circuit malfunction (’07- 09 models) Signal error (see page 22-159)
B1276 Combination light switch parking (SMALL) position circuit malfunction (’07-09 models) Signal error (see page 22-159)
B1278 Headlight switch ON position circuit malfunction (’07-09 models) Signal error (see page 22-159)
B1279 Headlight switch DIMMER position circuit malfunction (’07-09 models) Signal error (see page 22-161)
B1280 Turn signal switch circuit malfunction (’07-09 models) Signal error (see page 22-186)
B1281 Windshield wiper switch MIST position circuit malfunction (’07- 09 models) Signal error (see page 22-226)
B1282 Windshield wiper switch INT position circuit malfunction (’07-09 models) Signal error (see page 22-226)
B1283 Windshield wiper switch LOW position circuit malfunction (’07- 09 models) Signal error (see page 22-226)
B1284 Windshield wiper switch HIGH position circuit malfunction (’07- 09 models) Signal error (see page 22-226)
(cont’d)
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Gauge Control ModuleDTC Description DTC typePage
22-78Multiplex Integrated Control System
DTC Troubleshooting Index (cont’d)
B1150 Communication bus line error (BUS-OFF)
Loss of
communication (see page 22-106)
B1152 Gauge control m odule internal error (EEPROM error) Internal error (see page 22-262)
B1155 Gauge control m odule lost communication with the MICU
(Headlight switch message) Loss of
communication(see page 22-263)
B1156 Gauge control m odule lost communication with the MICU
(Wiper switch message) Loss of
communication(see page 22-263)
B1157 Gauge control m odule lost communication with the MICU
(MICU message) Loss of
communication(see page 22-264)
B1159 Gauge control m odule lost communication with the MICU
(DOORSW message) Loss of
communication(see page 22-263)
B1160 Gauge control m odule lost communication with the MICU
(DRLOCKSW message) Loss of
communication(see page 22-264)
B1168 Gauge control m odule lost communication with the ECM/PCM
(Engine messages) Loss of
communication(see page 22-265)
B1169 Gauge control m odule lost communication with the PCM (A/T
message) Loss of
communication(see page 22-265)
B1170 Gauge control m odule lost communication with ABS/VSA
modulator-control unit (ABS/VSA message) Loss of
communication(see page 22-265)
B1173 Gauge control m odule lost communication with the TPMS
control unit (TMPS message) (’08-09 models) Loss of
communication(see page 22-266)
B1175 Fuel level sensor (Fuel gauge sending unit) circuit open Signal error (see page 22-267)
B1176 Fuel level sensor (Fuel gauge sending unit) circuit short Signal error (see page 22-268)
B1177 Battery voltage a bnormal (’06 model) Battery voltage (see page 22-269)
B1178 F-CAN communication line error Loss of
communication (see page 22-265)
B1183 Gauge control m odule lost communication with EPS control unit
(EPS message) Loss of
communication(see page 22-270)
B1187 Gauge control m odule lost communication with the SRS unit
(SRS message) Loss of
communication(see page 22-265)
B1188 Gauge control m odule lost communication with the MICU (RM
message) Loss of
communication(see page 22-263)
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