Egr System - Suzuki WagonR+ RB310 Service Manual

1
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full Open)
EMISSION CONTROL SYSTEM

EGR SYSTEM

System Inspection (using SUZUKI scan tool)
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
2) Turn ignition switch ON and then select "DATA LIST" mode on
scan tool.
3) Make sure that vehicle condition is as following.
D Vehicle speed = 0 KPH
D Engine coolant temp. y 80_C
D Engine speed x 3000 rpm
4) Clear DTC by using "CLEAR INFO" mode.
5) With engine idling (without depressing accelerator pedal), open
EGR valve by using "STEP EGR" mode in "MISC TEST" menu.
In this state, according as EGR valve opening increases engine
idle speed drops. If not, possible cause is clogged EGR gas pas-
sage, stuck or faulty EGR valve, poor performance of ECT sen-
sor or TP sensor or DTC and/or pending DTC is (are) stored in
ECM memory.
2
Removal
1) Disconnect negative cable at battery.
2) Disconnect EGR valve coupler.
3) Remove EGR valve and gasket from intake manifold.
ENGINE AND EMISSION CONTROL SYSTEM 6E-35