Suzuki GRAND VITARA Owner's Manual page 266

1A-211 Engine General Information and Diagnosis:
DTC Confirmation Procedure
DTC P2227:
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool and warm up
engine to normal operating temperature.
3) Check DTC and pending DTC by using scan tool.
DTC P2228 / P2229:
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch, clear DTC by using scan tool and run engine for 1 min.
3) Check DTC and pending DTC by using scan tool.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions For DTC Troubleshooting: ".
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Is DTC P2227 set?
3 MAP sensor check
1) Check MAP sensor and its circuit referring to "DTC
P0107: Manifold Absolute Pressure Circuit Low Input:
"and/or "DTC P0108: Manifold Absolute Pressure Circuit
High Input: ".
Is check result satisfactory?
Action Yes
Go to Step 2.
Go to Step 3.
Substitute a known-
good ECM and recheck.
No
Go to "Engine and
Emission Control
System Check: ".
Substitute a known-
good ECM and recheck.
MAP sensor or its circuit
malfunction.