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FI
SYSTEM
DIAGNOSIS
Step 2
1) Turn the ignition switch OFF.
2) Remove the air cleaner element.
3) Disconnect the STP sensor coupler (White color).
4) Check the continuity between Yellow wire and ground.
_ STP sensor continuity:
00
0 (Infinity)
(Yellow wire - Ground)
5) If OK, then measure the STP sensor resistance at the cou-
pler (between Yellow and Black wires).
6) Close and open the secondary throttle valve by finger, and
measure the valve closing and opening resistance.
_ STP sensor resistance
Secondary throttle valve is closed : Approx.
0.5 kO
Secondary throttle valve is opened: Approx. 3.9 kO
IgOt!
09900-25008: Multi circuit tester set
~
Tester knob indication: Resistance
(0)
Is the resistance OK?
YES Go to Step 3.
•
Reset the STP sensor position correctly.
NO
•
Replace the STP sensor with a new one.
2
2
t