Suzuki VLR1800 Service Manual

1A-81 Engine General Information and Diagnosis:
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 ISC valve coupler (1) for loose or poor
contacts.
If OK, then check the ISC valve lead wire continuity.
4) Disconnect the ISC valve coupler and ECM coupler.
Refer to “ECM Removal and Installation in Section 1C
(Page 1C-1)”.
5) Check the continuity between terminal “A” and terminal
“53”, terminal “B” and terminal “16”, terminal “C” and
terminal “36”, terminal “D” and terminal “52”, terminal “E”
and terminal “16”, terminal “F” and terminal “35”.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity ( )
ECM couplers (Harness side)
Is the continuity OK?
Go to Step 2. Lbl, W/Y, Dgr, R/Bl or Lg
wire open.
1
I822H1110082-01
“52”
“D”
“E”
“F”
“35”
“36”
“53”
“A”
“B”
“C”
“16”
(A)
(B)
I822H1110083-02

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