Toyota Sequoia (2005). Manual — part 484
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I18742
Body ECU
IE
W–B
IND
12
A
17
BR
J8
J/C
GR
9
1F
1D
6
C6
C5
Combination Meter
16
B5
Security
Instrument Panel J/B
–
DIAGNOSTICS
BODY CONTROL SYSTEM
DI–1731
1925
Theft deterrent indicator circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is preparing to set, this circuit turns on the indicator light. When the system
has been set, it continually turns the indicator light on for 1 second and turns it off for 1 second, and thus
blinking the indicator light.
This theft deterrent indicator sends a key judgment of the immobilizer to the transponder key ECU.
WIRING DIAGRAM
DI579–09
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DI–1732
–
DIAGNOSTICS
BODY CONTROL SYSTEM
1926
INSPECTION PROCEDURE
HINT:
When using the hand–held tester, start the inspection from step 1 and when not using the hand–held tester,
start from step 2.
1
Check theft deterrent indicator using hand–held tester.
PREPARATION:
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch ON.
CHECK:
According to the display on the tester, perform the ”ACTIVE TEST”.
BODY ECU:
Item
Test Details
Diagnostic Note
SECURITY INDIC
Turn security indicator light ON/OFF
–
OK:
The theft deterrent indicator light flashes or goes off correctly when operating it through the
hand–held tester.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
2
Check theft deterrent indicator (See page
).
NG
Replace combination meter.
OK
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–
DIAGNOSTICS
BODY CONTROL SYSTEM
DI–1733
1927
3
Check wire harness and connector between theft deterrent indicator (combina-
tion meter) and body ECU, theft deterrent indicator (
combination meter
) and body
).
NG
Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page
![](/vehicles/linovind/vere/fry/pats.png)
I18735
1
Body ECU
T1
Theft Deterrent Horn
IA1
14
R–G
B7
1
SH
R–G
DI–1734
–
DIAGNOSTICS
BODY CONTROL SYSTEM
1928
Theft deterrent horn circuit
CIRCUIT DESCRIPTION
During warning of the theft deterrent system, the body ECU activates the theft deterrent horn.
WIRING DIAGRAM
DI57A–10
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