Dtc P0601 / P0602 / P0607: Internal Control Module Memory Check Sum Error / Control Module Programming Error / Control Module Performance - Suzuki Swift Sport 2004 Service & Repair Manual

1A-134 Engine General Information and Diagnosis:
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:
ECM internal processor 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 by using scan tool.
3) Start engine and run it at idle if possible.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to "Inspection of ECM and Its Circuits".
• Upon completion of inspection and repair work, perform "DTC Confirmation Procedure" and
confirm that the trouble has been corrected.
Step
1 DTC recheck
1) Clear DTC referring to "DTC Clearance".
2) Turn OFF ignition switch.
3) Turn ON ignition switch and check DTC.
Is DTC P0601 or P0607 still indicated?
2 ECM reprogramming check
Was reprogramming of ECM executed?
3 ECM power and ground circuit check
1) Check that ECM power supply circuit and ECM ground
circuit is in good condition referring to "ECM Power and
Ground Circuit Check".
Are check results OK?
DTC detecting condition
Action
Trouble area
• ECM power supply circuit and/or
ground circuit
• ECM
Yes
Go to Step 2.
Execute reprogramming
of ECM correctly once
again.
Substitute a known-
good ECM and recheck.
S7RS0B1104054
No
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Go to step 3.
Repair ECM power or
ground circuit.