Dtc P2227 / P2228 / P2229: Barometric Pressure Circuit Malfunction - Suzuki SX4 Service Manual

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Step
6
Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection of ECM connector at "E01-
37", "E01-52", "E01-36" and "E01-51" terminals.
3) If OK, measure resistance between "GRN" wire terminal
of APP sensor assembly connector and vehicle body
ground, between "YEL" wire terminal of APP sensor
assembly connector and vehicle body ground.
Is each resistance infinity?
7
Wire harness check
1) Turn ON ignition switch.
2) Measure voltage between "E01-37" terminal of ECM
connector and engine ground, between "E01-36"
terminal of ECM connector and engine ground.
Is each voltage 0 V?
8
APP sensor assembly check
1) 1)Check APP sensor referring to "Accelerator Pedal
Position (APP) Sensor Assembly Inspection in Section
1C".
Is output voltage within specified value?

DTC P2227 / P2228 / P2229: Barometric Pressure Circuit Malfunction

DTC P2227: Barometric Pressure Circuit Range / Performance
DTC P2228: Barometric Pressure Circuit Low
DTC P2229: Barometric Pressure Circuit High
System Description
Barometric pressure sensor is installed in ECM.
DTC Detecting Condition and Trouble Area
DTC P2227:
Difference of barometric pressure value and intake manifold pressure value
is more than specified value while engine cranking.
(2 driving cycle detection logic)
DTC P2228:
Barometric pressure signal is lower than specified value.
(1 driving cycle detection logic)
DTC P2229:
Barometric pressure signal is higher than specified value.
(1 driving cycle detection logic)
Action
DTC detecting condition
Engine General Information and Diagnosis:
Yes
Go to Step 7.
Go to Step 8.
Substitute a known-
good ECM and recheck.
• Manifold absolute pressure sensor
performance problem
• Barometric pressure sensor in ECM
• Barometric pressure sensor in ECM
1A-165
No
"GRN" wire or "YEL"
wire is shorted to other
circuit.
"GRN" wire or "YEL"
wire is shorted to other
circuit.
Replace APP sensor
assembly.
S7RW0A1104070
Trouble area

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