Suzuki Liana RH413 Service Manual page 137

Step
5 EGR valve power supply circuit check
1) With ignition switch OFF, disconnect EGR valve coupler.
2) With ignition switch ON, check voltage between terminal
"2" and terminal "5" of EGR valve coupler (1) and
ground.
Is each voltage 10 – 14 V?
6 EGR valve stepper motor coil circuit check
1) With ignition switch OFF, connect EGR valve coupler
and disconnect ECM couplers.
2) Check resistance between "G04-5" and "C41-18", "C41-
29", "C41-17", "C41-28".
Is each resistance 20 – 24
7 MAP sensor check
1) Check MAP sensor for performance referring to
"Manifold Absolute Pressure (MAP) Sensor Inspection in
Section 1C".
Is check result satisfactory?
Action
I2RH0B110057-01
Ω ° °
at 20 C, 68 F?
Engine General Information and Diagnosis:
Yes
Go to Step 6.
Go to Step 7.
EGR passage clogged
or EGR valve
malfunction, If all results
are OK, intermittent
trouble or faulty ECM.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
1A-86
No
Faulty "BLK/RED" wire.
Faulty "GRY", "GRY/
WHT", "GRY/YEL",
"BRN/WHT" wire or
EGR valve.
Repair or replace.