Daewoo Matiz (2003 year). Manual - part 88

 

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Daewoo Matiz (2003 year). Manual - part 88

 

 

1F – 262  ENGINE CONTROLS

DIAGNOSTIC TROUBLE CODE (DTC) – P0601 ENGINE CONTROL MODULE

CHECKSUM ERROR

Circuit Description

The engine control module (ECM) is the control center
of the fuel injection system. It constantly looks at the in-
formation from various sensors, and controls the sys-
tems that after vehicle performance. The ECM also
performs the diagnostic function of the system. It can
recognize operational problems, alert the driver through
the Malfunction Indicator Lamp (MIL), and store a Diag-
nostic Trouble Code (DTC) or DTCs which identify the
problem areas to aid the technician in making repairs.
An electrically erasable programmable read only
memory (EEPROM) is used to house the program infor-
mation and the calibrations required for engine, trans-
axle, transaxle diagnostics operation. The ECM uses a
value called a checksum for error detection of the soft-
ware. The checksum is a value that is equal to all the
numbers in the software added together. The ECM adds
all the values in the software and if that value does not

equal the checksum value, a checksum error is indi-
cated.

Conditions for Setting the DTC

D

The ECM detects more than 3 incorrect checksum.

Action Taken When the DTC Sets

D

The Malfunction Indicator Lamp (MIL) will not illumi-
nate.

D

The ECM will store conditions which were present
when the DTC was set as Failure Records data only.

D

This information will not be stored in the Freeze
Frame data.

Conditions for Clearing the MIL/DTC

D

A history DTC will clear after 40 consecutive warm-up
cycles without a fault.

D

DTC(s) can be cleared by using the scan tool.

DTC P0601– Engine Control Module Checksum Error

Step

Action

Value(s)

Yes

No

1

Perform an On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?

–

Go to Step 2

Go to

“On-Board
Diagnostic

System Check”

2

Replace the engine control module(ECM).
Is the replacement complete?

–

Go to Step 3

–

3

1. Using the scan tool, clear the DTCs.
2. Start the engine and idle at normal operating

temperature.

3. Operate the vehicle within the conditions for

setting this DTC ad specified in the supporting
text.

Does the scan tool indicate that this diagnostic has
run and passed?

–

Go to Step 4

Go to Step 2

4

Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?

–

Go to

applicable DTC

table

System OK

ENGINE CONTROLS  1F – 263

DIAGNOSTIC TROUBLE CODE (DTC) – P0604 ENGINE CONTROL MODULE

INTERNAL/EXTERNAL RAM ERROR

Circuit Description

The engine control module (ECM) is the control center
of the fuel injection system. It constantly looks at the in-
formation from various sensors, and controls the sys-
tems that after vehicle performance. The ECM also
performs the diagnostic function of the system. It can
recognize operational problems, alert the driver through
the Malfunction Indicator Lamp (MIL), and store a Diag-
nostic Trouble Code (DTC) or DTCs which identify the
problem areas to aid the technician in making repairs.
An electrically erasable programmable read only
memory (EEPROM) is used to house the program infor-
mation and the calibrations required for engine, trans-
axle, transaxle diagnostics operation. The ECM uses a
value called a checksum for error detection of the soft-
ware. The checksum is a value that is equal to all the
numbers in the software added together. The ECM adds
all the values in the software and if that value does not
equal the checksum value, a checksum error is indi-
cated.

Conditions for Setting the DTC

D

The ECM detects more than 3 incorrect checksum.

Action taken when The DTCs Sets

D

The Malfunction Indicator Lamp (MIL) will illuminate.

D

The ECM will record operating conditions at the time
the diagnostic fails. This information will be stored in
the Freeze Frame and Failure Records buffers.

D

A history DTC is stored.

D

Coolant fan turns on.

Conditions for Clearing the MIL/DTC

D

The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.

D

A history DTC will clear after 40 consecutive warm-up
cycles without a fault.

D

DTC(s) can be cleared by using the scan tool.

DTC P0604 – Engine Control Module RAM Error

Step

Action

Value(s)

Yes

No

1

Perform an On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?

–

Go to Step 2

Go to

“On-Board
Diagnostic

System Check”

2

Replace the engine control module(ECM).
Is the replacement complete?

–

Go to Step 3

–

3

1. Using the scan tool, clear the DTCs.
2. Start the engine and idle at normal operating

temperature.

3. Operate the vehicle within the conditions for

setting this DTC ad specified in the supporting
text.

Does the scan tool indicate that this diagnostic has
run and passed?

–

Go to Step 4

Go to Step 2

4

Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?

–

Go to

applicable DTC

table

System OK

1F – 264  ENGINE CONTROLS

DIAGNOSTIC TROUBLE CODE (DTC) – P0605 ENGINE CONTROL MODULE

NMVY WRITE ERROR

Circuit Description

The engine control module (ECM) is the control center of
the fuel injection system. It constantly looks at the infor-
mation from various sensors, and controls the systems
that after vehicle performance. The ECM also performs
the diagnostic function of the system. It can recognize op-
erational problems, alert the driver through the Malfunc-
tion Indicator Lamp (MIL), and store a Diagnostic Trouble
Code (DTC) or DTCs which identify the problem areas to
aid the technician in making repairs. An electrically eras-
able programmable read only memory (EEPROM) is
used to house the program information and the calibra-
tions required for engine, transaxle, transaxle diagnos-
tics operation. The ECM uses a value called a checksum
for error detection of the software. The checksum is a val-
ue that is equal to all the numbers in the software added
together. The ECM adds all the values in the software
and if that value does not equal the checksum value, a
checksum error is indicated.

Conditions for Setting the DTC

D

The ECM detects more than 3 incorrect checksum.

Action taken when The DTCs Sets

D

The Malfunction Indicator Lamp (MIL) will illuminate.

D

The ECM will record operating conditions at the time
the diagnostic fails. This information will be stored in
the Freeze Frame and Failure Records buffers.

D

A history DTC is stored.

D

Coolant fan turns on.

Conditions for Clearing the MIL/DTC

D

The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.

D

A history DTC will clear after 40 consecutive warm-up
cycles without a fault.

D

DTC(s) can be cleared by using the scan tool.

DTC P0605 Engine Control Module NMVY Write Error

Step

Action

Value(s)

Yes

No

1

Perform an On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?

–

Go to Step 2

Go to

“On-Board
Diagnostic

System Check”

2

Replace the engine control module(ECM).
Is the replacement complete?

–

Go to Step 3

–

3

1. Using the scan tool, clear the DTCs.
2. Start the engine and idle at normal operating

temperature.

3. Operate the vehicle within the conditions for

setting this DTC ad specified in the supporting
text.

Does the scan tool indicate that this diagnostic has
run and passed?

–

Go to Step 4

Go to Step 2

4

Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?

–

Go to

applicable DTC

table

System OK

ENGINE CONTROLS  1F – 265

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