Suzuki 2000 Grand Vitara SQ625 Service Manual page 95

DTC P0505 IDLE AIR CONTROL SYSTEM MALFUNCTION
SYSTEM/WIRING DIAGRAM
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
D Engine idle speed is 100 r/min. or more lower than
target idle speed for longer than 20 sec. continuously.
or
D Engine idle speed is 200 r/min or more higher than
target idle speed for longer than 20 sec. continuously.
(2 driving cycles detection logic)
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)
ENGINE DIAGNOSIS (G16 / J20 ENGINES) 6-91
TROUBLE AREA
D IAC valve or its circuit
D Abnormal air drawn in air intake system
1. Throttle body
2. Idle air control
valve
3. ECM (PCM)
4. Sensed information
5. Main fuse
6. Main relay
7. Fuse box