Dtc P0403 (Dtc No.51) Exhaust Gas Recirculation Circuit Malfunction - Suzuki GRAND VITARA XL-7 Owner's Manual

6-1-92 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE)

DTC P0403 (DTC No.51) Exhaust Gas Recirculation Circuit Malfunction

WIRING DIAGRAM
1. Main fuse 4. ECM (PCM)
2. Main relay
3. EGR valve
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
High voltage is detected at EGR valve stepping motor
electrical circuit for specified time continuously.
(Circuit open or short).
DTC CONFIRMATION PROCEDURE
NOTE:
Check to make sure that following condition is satisfied when using this "DTC CONFIRMATION PRO-
CEDURE".
• Intake air temp. : – 8°C (18°F) or higher
• Engine coolant temp. : – 8 – 110°C (18 – 230°F)
• 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.
3) Start engine and run it for 10 sec.
4) Check DTC by using scan tool.
TROUBLE AREA
EGR valve (stepping motor) or its circuit ECM
(PCM)