Suzuki Liana RH413, Service Manual

Page: 193 / 1302

Aux. Emission Control Devices: 1B-1
Engine
Aux. Emission Control Devices
Diagnostic Information and Procedures
EGR System Inspection (Using SUZUKI Scan
Tool)
S3RH0A1204001
1) Connect SUZUKI scan tool to data link connector
(DLC) with ignition switch turn OFF.
2) Turn ON ignition switch and erase DTC using
“CLEAR DTC” in “TROUBLE CODES” menu.
3) Start engine and warm up it to normal operating
temperature then select “DATA LIST” mode on scan
tool.
4) Make sure that vehicle condition is as following.
• Vehicle speed = 0 km/h (0 KPH)
• Engine speed
≤
900 rpm
• Engine coolant temp.
≥
90
°
C, 164
°
F
5) With engine idling (without depressing accelerator
pedal), open EGR valve 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 passage, stuck or faulty
EGR valve, poor performance of ECT sensor or TP
sensor or DTC and/or pending DTC is (are) stored in
ECM memory.
Repair Instructions
EVAP Canister Inspection
S3RH0A1206002
WARNING
!
DO NOT SUCK nozzles on EVAP canister.
Fuel vapor inside EVAP canister is harmful.
1) Check outside of EVAP canister visually.
2) Disconnect vacuum hoses from EVAP canister.
3) Check that there should be no restriction of flow
through purge pipe (1) and air pipe (2) when air is
blown (4) into tank pipe (3).
If any faulty condition is found in the inspection,
replace.
EVAP Canister Purge Inspection
S3RH0A1206003
NOTE
Before inspection, check to make sure that
gear shift lever is in neutral position (with A/T
model, selector lever in “P” range) and that
parking brake lever is pulled all the way up.
1) Hoist vehicle.
2) Disconnect purge hose (1) from EVAP canister.
3) Place finger against the end of disconnected hose
and check that vacuum is not felt there when engine
is cool and running at idle speed.
4) Connect purge hose to EVAP canister and warm up
engine to normal operating temperature.
5) Disconnect purge hose from EVAP canister.
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full Open)
I3RH0A120001-01
I2RH0B120001-01
1
I2RH0B120002-01