Suzuki 2000 Grand Vitara SQ416, Service Manual

Page: 49 / 729

YH4
GRAND
VITARA
1. Main fuse
2. Main relay
3. Mass air flow sensor
ENGINE DIAGNOSIS (G16 / J20 ENGINES) 6-45
DTC P0100 (DTC No.33, 34) MASS AIR FLOW CIRCUIT MALFUNCTION
WIRING DIAGRAM
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION TROUBLE AREA
Following conditions are detected for 5 sec.
continuously.
D
Engine running
D
Less than 0.64 mA MAF sensor output current
continues for 100 msec or more than 3 sec. after
ignition switch ON and more than 4.90 mA MAF
sensor output current continues for 100 msec.
D
MAF sensor circuit open or short
D
MAF sensor
D
ECM (PCM)
DTC CONFIRMATION PROCEDURE
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 run engine
at idle speed for 20 sec. or more.
3) Check DTC and pending DTC by using scan tool.