Toyota Sequoia (2005). Manual — part 645
I07839
2
1
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2375
2569
INSPECTION PROCEDURE
1
Check blower motor.
PREPARATION:
Remove the blower motor (See page
).
CHECK:
Connect the positive (+) lead connected to terminal 2 of the
blower motor connector, and the negative (–) lead to terminal
1.
OK:
Blower motor operates smoothly.
NG
Replace blower motor.
OK
2
Check harness and connector between battery and blower motor linear control-
ler, blower motor linear controller and body ground (See page
NG
Repair or replace harness or connector.
OK
3
Check harness and connector between integration control and panel and blower
motor linear controller (See page
).
NG
Repair or replace harness or connector.
OK
DI–2376
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2570
4
Check integration control and panel (See page
).
NG
Replace integration control and panel.
OK
Replace blower motor linear controller.
I28844
Integration Control
and Panel
2
L
16
7
R–W
RrBLW
RrVM
I21
21
BP
BH1
22
G
IJ3
A30
A/C Power Transistor
4
LG
W–G
W–B
5
3
B15
Blower Motor
(Rear)
1
2
G
W–G
L
1
w/ Rear A/C:
From
RR Heater Relay
I21
IJ3
W–B
A
J57
J/C
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2377
2571
Blower Motor Circuit (Rear A/C)
CIRCUIT DESCRIPTION
This is power source for the blower motor.
WIRING DIAGRAM
DI8AF–06
I28847
RrBLW
I21
Integration Control and Panel:
I24460
DI–2378
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2572
INSPECTION PROCEDURE
1
Check voltage between terminal RrBLW of integration control and panel and
body ground.
PREPARATION:
Remove the integration control and panel with connectors still
connected.
CHECK:
(a)
Turn the ignition switch to ON.
(b)
Operate the blower motor.
(c)
Measure the voltage between terminal RrBLW of the in-
tegration control and panel and body ground.
OK:
Voltage: 1 to 3 V
OK
NG
2
Check blower motor.
PREPARATION:
Remove the blower motor.
CHECK:
Connect the positive (+) lead from the battery to terminal 2 and
the negative (–) lead to terminal 1 of the blower motor connec-
tor.
OK:
Blower motor operates smoothly.
NG
Replace blower motor.
OK
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