Suzuki Swift User Manual page 228

6-1-72 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
STEP
6 Check PCV valve for clogging (See Section 6E2).
Is it in good condition?
7 Check EVAP Canister Purge Valve for Closing.
1) Disconnect purge hose (1) from EVAP canister.
2) Place finger against the end of disconnected hose.
3) Check that vacuum is not felt there, when engine is
cool and running at idle. See Fig. 7.
Is vacuum felt?
8 Check intake manifold pressure sensor for performance
(See DTC P0105 Diag. Flow Table).
Is it in good condition?
9 Check engine coolant temp. sensor for performance
(See Section 6E2).
Is it in good condition?
10 Check parts or system which can cause engine rough
idle or poor performance.
– Engine compression (See Section 6A1).
– Valve lash (See Section 6A1).
– Valve timing (Timing belt installation. See Section 6A1).
Are they in good condition?
Fig. 1 for Step 3
Fig. 4 for Step 5
Fig. 7 for Step 7
ACTION
Fig. 2 for Step 3
Disconnect connectors when checking plugs
for spark
Fig. 5 for Step 4
YES
Go to Step 7. Replace PCV valve.
Check EVAP Go to Step 8.
control system
(See Section 6E2).
Go to Step 9. Repair or replace.
Go to Step 10. Replace engine
coolant temp.
sensor.
Check wire harness Repair or replace.
and connection of
ECM (PCM) ground,
ignition system and
fuel injector for
intermittent open
and short.
Fig. 3 for Step 4
Fig. 6 for Step 5
NO
1. Fuel delivery pipe
2. Fuel feed hose
3. FUel pressure
gauge & 3 way joint