2001 TOYOTA SEQUOIA air conditioning

I28847
IG+ GNDI19 Integration Control and Panel:
I28847
GNDI19 Integration Control and Panel:
DI±2364
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2558 Author: Date:
2005 SEQUOIA (RM1146U)
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 AC±103).
(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 DI±2304).
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 W
NG Repair or replace harness or connector.
OK

I15901
GAUGE Fuse Instrument panel J/B
± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±2365
2559 Author: Date:
2005 SEQUOIA (RM1146U)
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
IN±35).
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 DOMESHORT PIN R
1J3A 3E I19
2C2D
BSub J/B No. 3
BB
R581
3
54 16 6
1E
1 RR
+B DI±2366
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2560 Author: Date:
2005 SEQUOIA (RM1146U)
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

I28847
+B I19 Integration Control and Panel:
I22575
DOME Fuse Engine Room J/B
± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±2367
2561 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check voltage between terminal +B of integration control and panel and body
ground.
PREPARATION:
Remove the integration control and panel with connectors still
connected.
CHECK:
Measure the voltage between terminal +B of the integration
control and panel and body ground.
OK:
Voltage : 10 to 14 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±2304).
NG
2 Check DOME fuse.
PREPARATION:
Remove the DOME fuse from the engine room J/B.
CHECK:
Check continuity of the DOME fuse.
OK:
Continuity
NG Check for short in all the harness and compo-
nents connected to the DOME fuse (See at-
tached wiring diagram).
OK
Check and repair harness and connector between integration control and panel and battery.

I28843
Integration Control
and Panel
ACC D
15 A CIG I18
Ignition Switch
120 1
40 A AM1
F10
Fusible Link
Block
Battery 2 Instrument Panel J/B3
P
W
B 11L1C
6P
1E AM1
140 A ALT
ACC
5 W±L
1C
8 W±L111
I19 J15
J/C
P Instrument Panel J/B
D
GND 10
I19 O O
J43 J43J/C
A
A
IG
Cowl Side Panel RH
DI±2368
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2562 Author: Date:
2005 SEQUOIA (RM1146U)
ACC Power Source Circuit
CIRCUIT DESCRIPTION
This circuit supplies power to the integration control and panel. It supplies power to the illumination for the
clock.
WIRING DIAGRAM
DI938±04

I28847
GNDI19 Integration Control and Panel:ACC
I22574
Instrument Panel J/B
CIG Fuse
± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±2369
2563 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check voltage between terminals ACC and GND of integration control and panel.
PREPARATION:
Remove the integration control and panel with connectors still
connected.
CHECK:
(a) Turn the ignition switch to ACC.
(b) Measure the voltage between terminals ACC and GND of
the integration control and panel.
OK:
Voltage : 10 to 14 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±2304).
NG
2 Check CIG fuse.
PREPARATION:
Remove the CIG fuse from the cowl side J/B.
CHECK:
Check continuity of the CIG fuse.
OK:
Continuity
NG Check for short in all the harness and compo-
nents connected to the CIG fuse (See attached
wiring diagram).
OK
Check and repair harness and connector between integration control and panel and battery.

I21123
Integration Control
and Panel
10
3A16
I19SPD G±O 10
3DSub J/B No. 4
G±O 3
C5 Combination Meter DI±2370
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2564 Author: Date:
2005 SEQUOIA (RM1146U)
Vehicle Speed Signal Circuit
CIRCUIT DESCRIPTION
The integration control and panel monitors the vehicle speed through signals sent from the speed sensor.
It uses these signals to receive the ambient temperature sensor signal.
WIRING DIAGRAM
DI3WE±18

± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±2371
2565 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Check that the speedometer operates normally.
NG Proceed to combination meter troubleshooting
(See page BE±2).
OK
2 Check harness and connector between combination meter and integration con-
trol and panel (See page IN±35).
NG Repair or replace harness or connector.
OK
Replace integration control and panel.