Suzuki GA413 Service Manual page 296

6-4 ENGINE
This vehicle is equipped with an engine and emission control system, which controls the A/F mixture, ignition tim-
ing, emission, etc. suitably to engine conditions by ECM. ECM has an On-Board Diagnostic system which detects
a malfunction in this system.
When diagnosing a trouble in the engine including this system, be sure to have understanding of the outline of "On-
Board Diagnostic system" and each item in "Precaution in Diagnosing Trouble" and follow "ENGINE DIAGNOSTIC
FLOW TABLE" given below to obtain correct result smoothly.
FUEL LEAKAGE CHECK PROCEDURE
After performing any service on fuel system, check to make sure
that there are no fuel leakages as follows.
1) Turn the ignition switch ON position for 3 seconds (to operate
fuel pump) and then turn it OFF position.
Repeat this (ON and OFF) 3 or 4 times and apply fuel pressure
to fuel line (till fuel pressure is felt by hand placed on fuel return
hose).
2) In this state, check to see that there are no fuel leakages from
any part of fuel system.
ENGINE DIAGNOSIS
ON-BOARD DIAGNOSTIC SYSTEM
Refer to "On-Board Diagnostic System" in Section 6E.
PRECAUTION IN DIAGNOSING TROUBLES
Be sure to read "Precaution in Diagnosing Troubles" in Section 6E
and observe what is written there.