Engine General Information and Diagnosis: 1A-54
C23 (Use of mode select switch)
Step Action Yes No
1 1) Remove the air cleaner box. Refer to “Air Cleaner Box
Removal and Installation in Section 1D (Page 1D-5)”.
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) Remove the TO sensor.
5) Disconnect the TO sensor coupler.
6) Measure the resistance between terminal “A” and
terminal “B”.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
TO sensor resistance
19.0 – 20.0 kΩ
(Terminal “A” – Terminal “B”)
Is the resistance OK?
Go to Step 2. Replace the TO sensor
with a new one. Refer to
“TO Sensor Removal
and Installation in
Section 1C (Page 1C-
5)”.
I831G1110055-01
“A”
“B”
(A)
I831G1110056-03
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