I08361
I08362
I08363
Hot
Cool
4
3
5
-
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI-735
889
Author:
Date:
2001 SIENNA (RM787U)
2
Check rear air mix damper position sensor.
PREPARATION:
Remove rear air mix servomotor (See page
CHECK:
Measure resistance between terminals 4 and 5 of rear air mix
damper control servomotor assembly connector.
OK:
Resistance : 4.2 - 7.8 k
Ω
CHECK:
While operating rear air mix damper control servomotor, follow-
ing the procedure, measure resistance between terminals 3
and 4 of rear air mix damper control servomotor assembly con-
nector.
OK:
Position
Resistance
Max. ”COOL”
3.6 - 6.8 k
Ω
Max. ”WARM”
0.5 - 1.1 k
Ω
HINT:
As the rear air mix damper control servomotor moves from
”COOL” side to ”WARM” side, the resistance decreases.
NG
Replace rear air mix damper control servomo-
tor assembly.
OK
3
Check harness and connector between A/C control assembly and rear air mix
damper control servomotor assembly (See page
).
NG
Repair or replace harness or connector.
OK
Check and replace A/C control assembly.
