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2-7 [T9EO]
FUEL INJECTION SYSTEM
E: TROUBLE CODE (21) - WATER TEMPERATURE SENSOR -
DIAGNOSIS :
TROUBLE SYMPTOM :
Abnormal signal is from water temperature sensor .
0 Failure of engine to start
Erroneous idling
Poor driving performance
Not OK
1
Check water temperature sensor.
1
Replace water temperature sensor.
I
I F
OK
Not OK
2l Check harness connector between ECU and wa-
ter temperature sensor .
00
Repair or replace harness connector .
~r OK
Not OK
Check contact of ECU connector terminal .
0 .
Repair ECU connector .
OK
Replace ECU .
VCC
_fT
w ater
ECU
-
temperature
sensor
LJ~
C2-350
Fig . 67
64
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Troubleshooting
