Dtc P0601 / P0602 / P0607: Internal Control Module Memory Check Sum Error / Control Module Programming Error / Control Module Performance - Suzuki SX4 Service Manual

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Step
5
A/C refrigerant pressure sensor signal circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure resistance between "RED/BLU" wire terminal of
A/C refrigerant pressure sensor connector and "E01-55"
terminal of ECM connector.
Is resistance below 2
6
A/C refrigerant pressure sensor ground circuit check
1) Turn OFF ignition switch, measure resistance between
engine ground and "ORN" wire terminal of A/C
refrigerant pressure sensor connector.
Is resistance below 5
7
ECM ground circuit check
1) Remove ECM from its bracket with ECM connectors
connected.
2) Measure resistance between engine ground and "E01-
54" terminal of ECM connector.
Is resistance below 5
8
A/C refrigerant pressure sensor check
1) Check A/C refrigerant pressure sensor referring to "A/C
Refrigerant Pressure Sensor and Its Circuit Inspection:
Manual Type in Section 7B" or "A/C Refrigerant
Pressure Sensor and Its Circuit Inspection: Automatic
Type in Section 7B".
Is it good condition?
DTC P0601 / P0602 / P0607: Internal Control Module Memory Check Sum Error / Control Module
Programming Error / Control Module Performance
System Description
Internal control module is installed in ECM.
DTC Detecting Condition and Trouble Area
DTC P0601:
Data write error or check sum error
(1 driving cycle detection logic)
DTC P0602:
Data programming error
(1 driving cycle detection logic but MIL does not light up)
DTC P0607:
Data programming error
(1 driving cycle detection logic)
DTC Confirmation Procedure
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.
3) Start engine and run it at idle if possible.
4) Check DTC and pending DTC by using scan tool.
Action
?
?
?
DTC detecting condition
Engine General Information and Diagnosis:
Yes
"RED/BLU" wire is
shorted to power supply
circuit.
Go to Step 8.
"ORN" wire is open or
high resistance circuit.
Substitute a known-
good ECM and recheck.
ECM
1A-139
No
"RED/BLU" wire is open
or high resistance
circuit.
Go to Step 7.
ECM grounds "C01-58",
"C01-15", "C01-30" and/
or "E01-31" is open or
high resistance circuit.
Faulty A/C refrigerant
pressure sensor.
S7RW0A1104055
Trouble area

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