Dtc P0401 (P0903) Egr Solenoid Valve Flow Insufficient Defected; Dtc P0402 (P0903) Egr Solenoid Valve Flow Excessive Detected - Suzuki Grand Vitara XL-7 Service Manual

DTC P0401 (P0903) EGR SOLENOID VALVE FLOW INSUFFICIENT DETECTED

DTC P0402 (P0903) EGR SOLENOID VALVE FLOW EXCESSIVE DETECTED

DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze flame data by using scan tool.
3) Run engine between 700 and 2700 rpm for 10 or more.
4) Check DTC and pending DTC by using scan tool.
TROUBLESHOOTING
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check EGR vacuum circuit and intake air circuit for
leak.
Is it in good condition?
3 Check EGR valve referring to "EGR VALVE" in
Section 6E3.
Is it in good condition?
4 Check EGR solenoid valve for resistance referring to
"EGR SOLENOID VALVE" in Section 6E3.
Is resistance as specified?
ENGINE DIAGNOSIS (RHZ ENGINE WITH SINGLE-CONNECTOR ECM) 6-53
ACTION YES
Go to Step 2.
Go to Step 3.
Go to Step 4.
Substitute a known-
good ECM and
recheck.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Repair or replace.
Faulty EGR valve.
Replace EGR
solenoid valve.