Suzuki Intruder VZR1800 Service Manual page 258

5-64 FI SYSTEM DIAGNOSIS
Step 2
1) Turn the ignition switch OFF.
2) Remove the air cleaner chamber. (#6-13)
3) Disconnect the STP sensor coupler.
4) Check the continuity between each terminal and ground.
$ STP sensor continuity: ∞ Ω (Infinity)
5) If OK, then measure the STP sensor resistance at the termi-
nals (between Y/W wire A and B/Br wire C).
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. 0.6 kΩ
Secondary throttle valve is opened: Approx. 4.2 kΩ
7) If OK, then measure the STP sensor resistance at the termi-
nals (between Red wire B and B/Br wire C).
$ STP sensor resistance: Approx. 5.0 kΩ
! 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
Are the continuity and resistance OK?
YES Go to Step 3.
• Reset the STP sensor position correctly.
NO
• Replace the STP sensor with a new one.
8) After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
(Terminal – Ground)
(Y/W A – B/Br C)
(Red B – B/Br C)
2
2
2
2
2