Test 8: Injector Malfunction - Suzuki Grand Vitara 2011 Manual

Step
3 1) Use "Initialize EGR valve data" on SUZUKI scan tool
command to try to reinitialise the operating values of the
EGR valve.
2) Check the air circuit referring to "Test 3: Checking the
turbocharged air inlet circuit: For Diesel Engine Model".
3) Check the MAF sensor referring to "Test 4: MAF sensor:
For Diesel Engine Model".
Is there in good condition?
4 Confirmation of the fault finding:
• Start the vehicle.
• Leave the engine at idling speed for 1 min.
• Accelerate very slowly up to 1500 rpm for 2 mins until the
exhaust gas recirculation function becomes active.
• Carry out a vehicle test at low speed, without accelerating
heavily, then normally.
• Check for faults using SUZUKI scan tool.
Does customer complaint or the faults recur?

Test 8: Injector malfunction

WARNING
!
When servicing fuel system, be sure to observe WARNING in "Precautions on Fuel System Service:
For Diesel Engine Model in Section 1G" to reduce the risk of fire and personal injury.
Step
1 CHECK THE FUEL REGULATION BALANCE, INJECTOR
BY INJECTOR
• With the engine at idle speed, coolant temperature > 80
°C, 176 °F, display the each injector fuel flow correction
values "Cyl # FF Correction" on Data List of SUZUKI scan
tool.
The normal value for fuel flow correction for an injector is ±
1.0 mm 3 /stroke.
This tolerance may increase with time, but indicates an
injector/cylinder fault if it exceeds ± 5.0 mm
Do one of these values exceed
Engine General Information and Diagnosis: For Diesel Engine Model 1A-374
Action
Action
3 / stroke.
±
5.0 mm 3 /stroke?
Yes
Go to Step 4.
Substitute a known-
good ECM and recheck.
Yes
Go to Step 2.
No
Repair as necessary.
Exhaust gas
recirculation valve
correct.
S6JB0A1124173
No
Go to Step 4.