Suzuki WagonR+ RB310 Service Manual page 593

6-2-22 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Step
11 Check ignition spark as follows:
1) Disconnect injector couplers.
2) Remove spark plugs and connect them to high-ten-
sion cords or ignition coils.
3) Ground spark plugs.
4) Crank engine and check if each spark plug sparks.
Is it in good condition?
12 Check fuel injector for operation as follows:
1) Install spark plugs and connect injector connectors.
2) Using sound scope (1), check operating sound of
each injector (2) when cranking engine. See Fig. 5.
Was injector operating sound heard from all injectors?
[A]: Fig. 1 for Step 5
[B]: Fig. 2 for Step 6
[A]: Fig. 3 for Step 6
[B]: Fig. 4 for Step 9
[C]: Fig. 5 for Step 12
Action Yes
Go to Step 12.
Go to "Engine Symp-
tom Diagnosis" in this
section.
No
Go to "Ignition Spark
Test" in Section 6F2.
Go to "Table B-1 Fuel
Injector Circuit Check"
in this section.