Toyota Sequoia (2005). Manual — part 532
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DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
DI–1923
2117
16
Check for a short circuit between the combination meter and the integration con-
trol and panel.
PREPARATION:
(a)
Reconnect connector ”B11” of the back door ECU.
(b)
Disconnect connector ”I19” of the integration control and panel.
CHECK:
Check the DTC (See page
OK:
DTCs B1214 and/or B1215 are not indicated.
HINT:
Ignore any codes other than DTCs B1214 and B1215.
OK
Repair or replace the wire harness between the
combination meter and the integration control
and panel.
NG
17
Check for a short circuit between the body ECU and driver door ECU.
PREPARATION:
(a)
Reconnect connector ”I19” of the integration control and panel.
(b)
Reconnect connector ”C5” of the combination meter.
(c)
Disconnect connector ”D22” of the driver door ECU.
(d)
Disconnect connector ”B6” of the body ECU.
CHECK:
Check the DTC (See page
OK:
DTCs B1214 and/or B1215 are not indicated.
HINT:
Ignore any codes other than DTCs B1214 and B1215.
OK
Repair or replace the wire harness between the
body ECU and driver door ECU.
NG
Replace the body ECU.
DI–1924
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DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
2118
DTC
B1221
Power window switch circuit on driver
door
CIRCUIT DESCRIPTION
This DTC is output only if the power window master switch AUTO UP/DOWN operation is performed.
If the DTC is not output, the following may be malfunctioning:
DTC No.
DTC Detecting Condition
Trouble Area
B1221
Does not operate either of the power window master switch
(except window lock switch)
Power window master switch (Built in driver door ECU)
Wire harness
Body ECU
HINT:
For details of inspection, see page
If the problem reoccurs even after replacement, replace the body ECU.
DI1SP–08
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DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
DI–1925
2119
DTC
B1222
Door lock switch circuit on driver door
CIRCUIT DESCRIPTION
This DTC is output while the body ECU senses the door unlock state through the door unlock detection
switch, which is built into the door lock motor.
If the DTC is not output, the following may be malfunctioning:
DTC No.
DTC Detecting Condition
Trouble Area
B1222
Does not operate door key lock and unlock switch
Door lock control switch front LH (Built in driver door ECU)
Door unlock detection switch front LH
Wire harness
Body ECU
HINT:
For details of inspection, see page
If the problem reoccurs even after replacement, replace the body ECU.
DIDFD–01
DI–1926
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DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
2120
DTC
B1223
Power window switch circuit on pas-
senger door
CIRCUIT DESCRIPTION
This DTC is output only if the power window switch AUTO UP/DOWN operation is performed.
If the DTC is not output, the following may be malfunctioning:
DTC No.
DTC Detecting Condition
Trouble Area
B1223
Does not operate power window switch or door lock control
Power window switch (Built in passenger door ECU)
Wire harness
Body ECU
HINT:
For details of inspection, see page
If the problem reoccurs even after replacement, replace the body ECU.
DIDFE–01
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