Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 acsy ciignite
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DI-754
DIAGNOSTICS - AIR CONDITIONING SYSTEM
DI3WE-07
Igniter Circuit
CIRCUIT DESCRIPTION
This A/C control assembly monitors the engine speed through signals sent from the igniter. The A/C control
assembly uses these signals and compressor speed signals to detect the compressor lock condition.
WIRING DIAGRAM
J25 A/C Control Assembly
ECM J/C
27 13
C C
TACH E9 A25 IGN
LG-B LG-B
C
Combination Meter LG-B
1
C11
I21117
INSPECTION PROCEDURE
1 Check operation of tachometer.
CHECK:
Check that the tachometer operates normally.
NG Proceed to combination meter troubleshooting
(See page BE-2 ).
NG
2001 SIENNA (RM787U)
Author : Date : 908
DI-755
DIAGNOSTICS - AIR CONDITIONING SYSTEM
2 Check harness and connector between A/C control assembly and ECM (See
page IN-31 ).
NG Repair or replace harness or connector.
OK
3 Check harness and connector between A/C control assembly and combination
meter (See page IN-31 ).
NG Repair or replace harness or connector.
OK
Check and replace A/C control assembly.
2001 SIENNA (RM787U)
Author : Date : 909
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