Suzuki VLR1800 Service Manual

1A-53 Engine General Information and Diagnosis:
C21 (Use of mode select switch)
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Remove the fuel tank. Refer to “Fuel Tank Removal and
Installation in Section 1G (Page 1G-8)”.
3) Check the IAT sensor coupler (1) for loose or poor
contacts.
If OK, then measure the IAT sensor input voltage.
4) Disconnect the IAT sensor coupler and turn the ignition
switch ON.
5) Measure the input voltage between the Dg wire terminal
and ground.
If OK, then measure the input voltage between the Dg
wire terminal and B/Br wire terminal.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
IAT sensor input voltage
4.5 – 5.5 V
((+) terminal: Dg – (–) terminal: Ground, (+) terminal:
Dg – (–) terminal: B/Br)
Is the voltage OK?
Go to Step 2. • Loose or poor
contacts on the ECM
coupler.
• Open or short circuit
in the Dg or B/Br
wire.
1
I822H1110038-01
(A)
I822H1110039-01

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