Dtc P0103: Mass Air Flow Circuit High Input - Suzuki 2006 SX4 Service Manual

Step
4 MAF sensor ground circuit check
1) Turn OFF ignition switch, measure resistance between
"GRY" wire terminal of MAF and IAT sensor connector
and engine ground.
Is resistance below 5
5 Ground circuit check
1) Remove ECM from its bracket with ECM connectors
connected.
2) Measure resistance between "C01-27" terminal of ECM
connector and engine ground.
Is resistance below 5
6 MAF sensor signal circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure voltage between "GRN/BLK" wire terminal of
MAF and IAT sensor connector and engine ground with
ignition switch turned ON.
Is voltage 0 V?
7 MAF sensor signal circuit check
1) Measure resistance between "GRN/BLK" wire terminal
of MAF and IAT sensor connector and engine ground
with ignition switch turned OFF.
Is resistance infinity?
8 MAF sensor signal circuit check
1) Measure resistance between "GRN/BLK" wire terminal
of MAF and IAT sensor connector and "C01-26" terminal
of ECM connector.
Is resistance below 3
9 MAF sensor output signal check
1) Connect connectors to MAF and IAT sensor and ECM
with ignition switch turned OFF.
2) Measure voltage between "C01-26" and "C01-27"
terminals of ECM connector referring to "Mass Air Flow
(MAF) and Intake Air Temperature (IAT) Sensor On-
Vehicle Inspection in Section 1C".
Is each value within specified range?

DTC P0103: Mass Air Flow Circuit High Input

Wiring Diagram
Refer to "DTC P0101: Mass Air Flow Circuit Range / Performance".
DTC Detecting Condition and Trouble Area
Voltage of MAF sensor output is more than specified value for specified time
with engine running.
(1 driving cycle detection logic)
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
Action
Ω
?
Ω
?
Ω
?
DTC detecting condition
Engine General Information and Diagnosis:
Yes
Go to Step 6.
"GRY" wire is open or
high resistance circuit.
Go to Step 7.
Go to Step 8.
Go to Step 9.
Substitute a known-
good ECM and recheck.
• Open or short in MAF sensor circuit
• MAF sensor
• ECM
1A-67
No
Go to Step 5.
ECM grounds "C01-58",
"C01-15", "C01-30" and/
or "E01-31" circuit is
open or high resistance.
If wires are OK,
substitute a known-
good ECM and recheck.
"GRN/BLK" wire is
shorted to other circuit.
"GRN/BLK" wire is
shorted to ground
circuit.
"GRN/BLK" wire is open
or high resistance
circuit.
Faulty MAF and IAT
sensor.
S6RW0D1104019
Trouble area