Suzuki 2006 SX4, Service Manual

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1A-64 Engine General Information and Diagnosis:
DTC P0102 / P0103: Mass or Volume Air Flow Circuit Low / High Input
S6RW0C1104018
Wiring Diagram
Refer to “DTC P0101: Mass or Volume Air Flow Circuit Range / Performance”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Turn ignition switch to ON position.
4) Check DTC.
DTC Troubleshooting
5 MAF sensor signal check
1) Turn ignition switch OFF position.
2) Connect connectors to MAF sensor and ECM.
3) Check MAF sensor signal voltage referring to “Mass Air
Flow (MAF) and Intake Air Temperature (IAT) Sensor
On-Vehicle Inspection in Section 1C”.
Is each value within specified range?
Substitute a known-
good ECM and recheck. Replace MAF and IAT
sensor.
Step Action Yes No
DTC detecting condition Trouble area
DTC P0102:
Output voltage of MAF sensor is lower than 0.15 V for 5 sec.
(1 driving cycle detection logic)
• MAF sensor and/or its circuit
• ECM
DTC P0103:
Output voltage of MAF sensor is higher than 4.85 V for 5 sec.
(1 driving cycle detection logic)
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 MAF sensor and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Start engine and check MAF value displayed on scan
tool. (Refer to “Scan Tool Data” for normal value.)
Is normal value indicated?
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”. Go to Step 3.