Suzuki Intruder VZR1800 Service Manual page 282

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5-88
FI SYSTEM DIAGNOSIS
Step 4
1) Turn the ignition switch OFF.
2) Connect the position sensor coupler.
3) Measure the position sensor output voltage at fully close posi-
tion and fully open position.
4) Insert the needle pointed probes to the back side of the posi-
tion sensor lead wire coupler. (+ Yellow – - B/Br)
5) Disconnect the EXCVA motor lead wire coupler.
6) To set the EXCV to fully close position, apply 12 volts to A
and B terminals.
Positive wire – A (Pink wire) terminal
Negative wire – B (Gray wire) terminal
7) Turn the ignition switch ON.
8) Measure the position sensor output voltage at fully close posi-
tion.
9) Then, to set the EXCV to fully open position, apply 12 volts to
B and A terminals.
Positive wire – B (Gray wire) terminal
Negative wire – A (Pink wire) terminal
10)Measure the position sensor output voltage at fully open
position.
$ Position sensor output voltage
EXCV is fully close: 0.5 – 1.5 V
EXCV is fully open: 3.5 – 4.5 V
! 09900-25008: Multi circuit tester set
09900-25009: Needle pointed probe set
& Tester knob indication: Voltage (')
Is the voltage OK?
Replace the ECM with a known good one, and
YES
inspect it again.
NO
Go to Step 5.
11)After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
(+ Yellow – - B/Br)
4
4
12 V
4
12 V
V

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