23" To Sensor Circuit Malfunction - Suzuki RM-z450 Owner's Service Manual

"23" TO SENSOR CIRCUIT MALFUNCTION

DETECTED CONDITION
The sensor voltage should be the following for 5 sec.
and more.
0.2 V Sensor voltage < 4.6 V
TO sensor
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle pointed tester probe to prevent the terminal damage or terminal bend.
INSPECTION
Step 1
1) Stop the engine.
2) Remove the fuel tank. ("13-2)
3) Check the TO sensor coupler for loose or poor contacts.
If OK, then measure the TO sensor resistance.
4) Remove the TO sensor.
5) Measure the resistance between terminal A and terminal B.
# TO sensor resistance: 16.5 – 22.3 kΩ
! 09900-25008: Multi-circuit tester set
$ Tester knob indication: Resistance (Ω)
Is the resistance OK?
YES Go to Step 2.
NO Replace the TO sensor with a new one.
R/Bl
Br/W
B/Br
CAUTION
(Terminal A – Terminal B)
POSSIBLE CAUSE
• TO sensor circuit open or short.
• TO sensor malfunction.
• ECM malfunction.
1
1
FI SYSTEM DIAGNOSIS 12-36
ECM
VCC
TOS
E2