Suzuki WagonR+ RB310 Service Manual page 1782

ENGINE BASIC INSPECTION
This check is very important for troubleshooting when ECM (PCM) has detected no DTC and no abnormality has
been found in visual inspection.
Follow the flow table carefully.
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check battery voltage.
Is it 11 V or more?
3 Is engine cranked?
4 Does engine start?
5 Check idle speed as follows.
1) Warm up engine to normal operating temp.
2) Shift transmission to neutral position for M/T
("P" position for A/T).
3) All of electrical loads are switched off.
4) Check engine idle speed with scan tool.
See Fig. 1.
Is it 750 – 850 r/min.?
6 Check ignition timing as follows.
1) Select "MISC" mode on SUZUKI scan tool and
fix ignition timing to initial one. See Fig. 2.
2) Using timing light (1), check initial ignition timing.
See Fig. 3.
Is it 5_ ± 3_ BTDC at specified idle speed?
7 Check immobilizer system malfunction as follows.
1) Check immobilizer indicator lamp for flashing.
Is it flashing when ignition switch is turned to ON
position?
8 Check fuel supply as follows.
1) Check to make sure that enough fuel is filled in fuel
tank.
2) Turn ON ignition switch for 2 seconds and then
OFF. See Fig. 4.
Is fuel return pressure (returning sounds) felt from fuel
feed hose (1) when ignition switch is turned ON?
9 Check fuel pump for operating.
1) Was fuel pump operating sound heard from fuel
filler for about 2 seconds after ignition switch ON
and stop?
10 Check ignition spark as follows.
1) Disconnect injector coupler.
2) Remove spark plugs and connect them to high
tension cords.
3) Ground spark plugs.
4) Crank engine and check if each spark plug sparks.
Is it in good condition?
11 Check fuel injector for operation as follows.
1) Install spark plugs and connect injector
connectors.
2) Check that fuel is injected out in conical shape
from fuel injector when cranking.
Is it in good condition?
ACTION
GENERAL INFORMATION AND ENGINE DIAGNOSIS 6-1-19
YES
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Go to "ENGINE
DIAGNOSIS TABLE".
Go to "DIAGNOSIS" in
Section 8G.
Go to Step 10.
Go to "DIAG. FLOW
TABLE B-3".
Go to Step 11.
Go to "ENGINE
DIAGNOSIS TABLE".
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Charge or replace
battery.
Go to "DIAGNOSIS"
in Section 6G.
Go to Step 7.
Go to "ENGINE
DIAGNOSIS TABLE".
Check ignition control
related parts referring
to Section 6F.
Go to Step 8.
Go to Step 9.
Go to "DIAG. FLOW
TABLE B-2".
Go to "DIAGNOSIS"
in Section 6F.
Go to "DIAG. FLOW
TABLE B-1".