P0400

DTC P0400 EXHAUST GAS RECIRCULATION FLOW MALFUNCTION





WIRING DIAGRAM

CIRCUIT DESCRIPTION
Refer to section 6E1 for system operation





DETECTING CONDITION





DTC CONFIRMATION PROCEDURE

WARNING:
- 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.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1) Turn ignition switch OFF.
Clear DTC with ignition switch ON, check vehicle and environmental condition for:
- Indication of fuel level meter in combination meter: 1/4 or more
- Altitude (barometric pressure): 2400m, 8000ft or less (560mmHg, 75kPa or more)
- Ambient temp. : -10°C, 14°F or higher
- Intake air temp: 70°C, 122°F or lower
2) Start engine and warm it up to normal operating temperature (70-110°C, 158-230°F) and run it at idle for 5 mm.
3) Increase vehicle speed to 50-55mph, 80-88km/h in 5th gear or in "D" range.
4) Hold throttle valve at that opening position for 2 mm. or longer.
5) Increase engine speed to 4000r/min. in 3rd gear or in 2" range.
6) Release accelerator pedal and with engine brake applied, keep vehicle coasting (fuel cut condition) till engine speed reaches 1500r/min.
7) Stop vehicle (don't turn ignition switch OFF) and confirm test results according to following "Test Result Confirmation Flow Table."





Test Result Confirmation Flow Table











INSPECTION