Toyota Sequoia (2005). Manual — part 642
I28842
Integration Control
and Panel
IG+
Battery
15 A GAUGE
3A
5
3E
2
I19
R–L
B–Y
5
I18
Ignition Switch
2
1
AM1
1L
W–L
IG1
40 A AM1
1C
1C
1E
B
W
8
F10
Fusible Link Block
W–L
R–L
4
7
15
R–L
1
6
Instrument Panel J/B
Instrument Panel J/B
I19
10
GND
140 A ALT
O
J43
J43
J/C
A
A
O
2
1
Sub J/B No. 3
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2363
2557
IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the integration control and panel and servomotors, etc.
WIRING DIAGRAM
DI937–04
I28847
IG+
GND
I19
Integration Control and Panel:
I28847
GND
I19
Integration Control and Panel:
DI–2364
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2558
INSPECTION PROCEDURE
1
Check voltage between terminals IG+ and GND of integration control and panel.
PREPARATION:
(a)
Remove the integration control and panel with connec-
tors still connected (See page
).
(b)
Turn the ignition switch to ON.
CHECK:
Measure the voltage between terminals IG+ and GND of the in-
tegration control and panel.
OK:
Voltage : 10 to 14 V
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
2
Check continuity between terminal GND of integration control and panel and
body ground.
PREPARATION:
Turn the ignition switch to LOCK.
CHECK:
Measure the resistance between terminal GND of the A/C con-
trol assembly and body ground.
OK:
Resistance : Below 1
Ω
NG
Repair or replace harness or connector.
OK
I15901
GAUGE Fuse
Instrument panel J/B
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2365
2559
3
Check GAUGE fuse.
PREPARATION:
Remove the GAUGE fuse from the instrument panel J/B.
CHECK:
Check continuity of the GAUGE fuse.
OK:
Continuity exists.
NG
Check for shot in all the harness and compo-
nents connected to the GAUGE fuse (See page
OK
Check and repair harness and connector between integration control and panel and battery.
I24456
Integration Control
and Panel
Engine Room J/B
Battery
F10
Fusible Link
Block
Instrument
Panel J/B
10 A DOME SHORT PIN
R
1J
3A
3E
I19
2C
2D
B
Sub J/B No. 3
B
B
R
5
8
1
3
5
4
16
6
1E
1
R
R
+B
DI–2366
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2560
Back–up Power Source Circuit
CIRCUIT DESCRIPTION
This is the back up power source for the integration control and panel. Power is supplied even when the
ignition switch is off and is used for diagnostic trouble code memory, etc.
WIRING DIAGRAM
DI3FL–10
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