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FI
SYSTEM
DIAGNOSIS
4·43
"C23" TO SENSOR CIRCUIT MALFUNCTION
POSSIBLE
CAUSE
• TO sensor circuit open or short.
• TO sensor malfunction.
• ECM malfunction.
DETECTED CONDITION
---------+-------------------1
Output voltage low or high
0.2
;;;;;
Sensor voltage < 4.8 V
(without the above range.)
________
---J.-
---'
INSPECTION
Step 1
1) Lift and support the fuel tank with its prop stay. (c::::rS-S)
2) Turn the ignition switch OFF.
3) Check the TO sensor coupler for loose or poor contacts.
If OK, then measure the TO sensor resistance.
4) Disconnect the TO sensor coupler.
S) Measure the resistance between Red wire and B/Br wire
terminals.
_ TO
sensor
resistance: 19.1 - 19.7 kO (Red - B/Br)
,root,
09900-25008: Multi
circuit
tester
set
~
Tester
knob
indication: Resistance
(0)
Is the resistance OK?
YES Go to Step 2.
NO Replace the TO sensor with a new one.