Suzuki VLR1800 Service Manual

1A-99 Engine General Information and Diagnosis:
4 1) Turn the ignition switch OFF.
2) Connect the EXCVA position sensor coupler (1).
3) Disconnect the EXCVA motor coupler (2).
4) Measure the EXCVA position sensor output voltage at
EXCV fully closed position and fully opened position. To
set the EXCV to fully closed position, apply 12 V to the
terminals as follows.
Positive wire – P wire terminal
Negative wire – Gr wire terminal
5) Insert the needle pointed probes to the back side of the
EXCVA position sensor coupler ((+) Y – (–) W).
6) Turn the ignition switch ON.
7) Measure the EXCVA position sensor output voltage at
EXCV fully closed position.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Voltage ( )
EXCVA position sensor output voltage
EXCV is fully closed: 0.5 – 1.5 V
((+) Y – (–) W)
Replace the ECM with a
known good one, and
inspect it again.
Go to Step 5.
Step Action Yes No
1
2
I823H1110164-01
(A)
(B)
I822H1110114-01

Suzuki VLR1800 Specifications

General

Manufacturer	Suzuki
Model	VLR1800
Compression Ratio	10.5:1
Fuel System	Fuel injection
Starter	Electric
Transmission	5-speed
Category	Cruiser
Displacement	1783 cc
Ignition	Electronic ignition (Transistorized)
Final Drive	Shaft
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Rear Brakes	Single disc
Ground Clearance	140 mm
Seat Height	705 mm