I21120
G-Y
12
B
A/C control assembly
Battery
C11
Driver Side J/B No. 1
J6
J/C
A
A
R
J18
J/C
A
A
R
1V
10
1W
3
W-R
2J
3
2B
3
DOME
SHORT PIN
FL MAIN
W
Engine Room J/B No. 2
I04416
Engine Room J/B No. 2
DOME Fuse
-
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI-747
901
Author:
Date:
2001 SIENNA (RM787U)
Back Up Power Source Circuit
CIRCUIT DESCRIPTION
This is the back up power source for the A/C control assembly. Power is supplied even when the ignition
switch is off and is used for diagnostic trouble code memory, etc.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check DOME fuse.
PREPARATION:
Remove DOME fuse from engine room J/B No.2.
CHECK:
Check continuity of 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
DI3FL-04