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4B
TROUBLESHOOTING
WITH
SST
No. 09 Code
illumination
(Water
Therm0
Sensor)
Repair or replace
connector
I
NO
Is resistance
of the water thermo
sensor OK?
Resistance:
i
YES
NO
Replace
water therm0
sensor
Is there continuity
between
water therm0
sensor and
engine
control
unit?
Water thermo
sensor
1
Engine
control
unit
NO
PC: Open circuit in tiring
harness
from water therm0
A (LR wire)
I
21
tensor
to engine
control
unit
6 (LY wire)
2c
tags
OK? (Refer to page 48-77)
PC: Short circuit in tiring
harness
YES
PC: Engine control
unit malfunction
48-16
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