Suzuki 2000 Grand Vitara SQ416, Service Manual

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YH4
GRAND
VITARA
6-56 ENGINE DIAGNOSIS (G16 / J20 ENGINES)
DTC CONFIRMATION PROCEDURE
WARNING:
D
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
D
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
NOTE:
Check to make sure that the following conditions are satisfied when using this DTC CONFIRMATION PRO-
CEDURE.
D
Intake air temp.: – 8
_
C, 18
_
F or higher
D
Engine coolant temp.: – 8 – 110
_
C (18 – 230
_
F)
D
Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool and start engine.
3) Increase vehicle speed to 55 km / h (35 mph) or more.
4) Keep driving above vehicle speed for 2 min. or more (Change of vehicle speed is permitted in this step).
5) Stop vehicle, and run engine at idle speed for 1 min.
6) Check if DTC and pending DTC exists by using scan tool. If not, check if oxygen sensor monitoring test has
completed by using scan tool. If not in both of above checks (i.e., no pending DTC and oxygen sensor monitoring
test not completed), check vehicle condition (environmental) and repeat step 3) through 6).