Suzuki Vitara (LY) 2016-2017 · Service Manual D16AA · Diagnostic Information and Procedures

DTC P0102 / P0103 / P010F

Precautions: General safety (00)

DTC Detecting Condition and Trouble Area
DTC detection condition Trouble area
P0102: Mass or Volume Air Flow “A” Circuit Low
Measured MAF is lower than specified value.
(3 D/C detection logic)
•MAF sensor and/or its circuit
•Barometric pressure sensor (in ECM)
•ECM
P0103: Mass or Volume Air Flow “A” Circuit High
Measured MAF is higher than specified value.
(3 D/C detection logic)
P010F: Mass or Volume Air Flow Sensor A / B Correlation
Calculated ratio measured MAF value and standard MAF value is out of specified range for specified time.
(1 D/C detection logic)
Circuit Diagram
img
[A]: ECM connector (View: [a]) A3: MAF sensor ground circuit 2. MAF sensor
A1: MAF sensor power supply circuit B1: IAT sensor-1 signal circuit 3. IAT sensor-1
A2: MAF sensor signal circuit 1. ECM    
DTC Troubleshooting
Step Action Yes No
1
Was “Engine and Emission Control System Check” performed?
Go to Step 2.
2
Preliminary check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Set ignition “ON”.
3)With engine off and all electrical loads turned off.
4)Check “Barometric Pressure” displayed on SUZUKI scan tool. Displayed value should be within range of 90 – 120 kPa (0.8 – 1.2 bar).
Is check result OK?
Go to Step 3.
Repair or replace defective part(s).
3
MAF operation check
1)Check that MAF sensor is working properly. icon 
Is check result OK?
Replace ECM and recheck DTC. icon 
Repair or replace defective part(s).