Toyota Sequoia (2005). Manual — part 486
–
DIAGNOSTICS
BODY CONTROL SYSTEM
DI–1739
1933
4
Check wireless door lock receiver.
PREPARATION:
Check that malfunction disappears when another wireless door lock receiver in good condition is installed.
CHECK:
Check wireless door lock function.
OK:
The wireless door lock system operates normally.
NG
Proceed to next circuit inspection shown in
problem symptoms table (See page
OK
Failure of the original wireless door lock re-
ceiver.
5
Check wire harness and connector (RDA circuit).
PREPARATION:
Disconnect the wireless door lock receiver connector.
CHECK:
Check continuity between terminal W2–2 (RDA) of the wireless door lock receiver and terminal B5–4 (RDA)
of the body ECU.
OK:
Continuity
NG
Repair or replace harness or connector.
OK
6
Check voltage between terminals +B and E of wireless door lock receiver.
CHECK:
Measure the voltage between terminals W2–5 (+B) and W2–1 (E) of the wireless door lock receiver.
OK:
Voltage: 10 to 14 V
NG
Repair or replace harness or connector.
OK
DI–1740
–
DIAGNOSTICS
BODY CONTROL SYSTEM
1934
7
Check wireless door lock receiver.
PREPARATION:
Check that malfunction disappears when another wireless door lock receiver in good condition is installed.
CHECK:
Check wireless door lock function.
OK:
The wireless door lock system operates normally.
NG
Proceed to next circuit inspection shown in
problem symptoms table (See page
OK
Failure of the original wireless door lock re-
ceiver.
I18739
2
1
BUZZER
LG
7
IA1
ED
Body ECU
W1
Wireless Door
Lock Buzzer
BZR
LG
B7
15
W–B
A
J28
J/C
A
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DIAGNOSTICS
BODY CONTROL SYSTEM
DI–1741
1935
Wireless door lock buzzer circuit
CIRCUIT DESCRIPTION
The body ECU receives a door OPEN/CLOSE demand signal from the wireless transmitter via the wireless
door lock receiver. The ECU then sounds the wireless door lock buzzer as an answer back.
WIRING DIAGRAM
DI6LW–13
DI–1742
–
DIAGNOSTICS
BODY CONTROL SYSTEM
1936
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 wireless door lock buzzer 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
BUZZ RESP SOUND
Turn wireless buzzer ON/OFF
Turn volume to MAX. if it is a wireless buzzer
equipped vehicle.
OK:
The wireless door lock buzzer sounds normally.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
2
Check wireless door lock buzzer (See page
NG
Replace wireless door lock buzzer.
OK
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