Suzuki Grand Vitara 2011 Manual page 432

1A-363 Engine General Information and Diagnosis: For Diesel Engine Model
Table 6: Poor Performance without Smoke
NOTE
In the case of engine overheating to more than 119 °C, 246 °F the computer deliberately limits the fuel
flow (overheating warning light illuminates from 115 °C, 239 °F).
Troubleshooting
Step
1 Is the engine running on all cylinders?
2 Check the conformity of the accelerator pedal position
sensor, the brake lamp switch, the boost pressure sensor,
the EGR valve and the inlet throttle valve.
Is there in good condition?
3 Check the consistency of the signal: of the MAF sensor, of
the ECT sensor and of the engine speed.
Check the connections, the continuity and absence of
interference resistance of the MAF sensor (refer to "DTC
P0100: Mass or Volume Air Flow Circuit: For Diesel Engine
Model" of troubleshooting for 2.DEF: Offset at minimum
threshold.), of the ECT sensor (refer to "DTC P0115: ECT
Circuit: For Diesel Engine Model"), and the engine speed
(refer to "DTC P0016: CKP – CMP Correlation: For Diesel
Engine Model").
Is there in good condition?
4 Check the following:
• Diesel filter not clogged (for the test, refer to "DTC P0089:
Fuel Flow Actuator Performance: For Diesel Engine
Model" of troubleshooting for 2.DEF: Measured pressure
too low.).
• There are no leaks on the low and high pressure air
circuits referring to "Test 3: Checking the turbocharged air
inlet circuit: For Diesel Engine Model".
• The oil vapour rebreathing system is connected.
• The fuel flow actuator (blocked/seized, perform output
test "IMV/Flow actuator" on SUZUKI scan tool.).
• The engine timing (and the position of the high pressure
pump sprocket).
Is there in good condition?
5 Are the compressions correct?
Action Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
End of fault finding.
S6JB0A1124159
No
Check the injector
operation referring to
"Test 8: Injector
malfunction: For Diesel
Engine Model".
Carry out the required
repairs.
Carry out the required
repairs.
Carry out the required
repairs.
Carry out the required
repairs.