DAEWOO NUBIRA 2004 Service Repair Manual

ENGINE CONTROLS 1F – 455
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0337
58X CRANK POSITION SENSOR NO SIGNAL
Circuit Description
The 58X reference signal is produced by the Crankshaft
Position (CKP) sensor. During one crankshaft revolution,
58 crankshaft pulses will be produced. The Engine Control
Module (ECM) uses the 58X reference signal to calculate
engine rpm and CKP. The ECM constantly monitors the
number of pulses on the 58X reference circuit and
compares them to the number of Camshaft Position
(CMP) signal pulses being received. If the ECM does not
receive any 58X reference pulses on the 58X reference
circuit while cranking, Diagnostic Trouble Code (DTC)
P0337 will set.
Conditions for Setting the DTC
S 58X reference pulse not seen during cranking.
S DTCs P0341 and P0342 are not set.
S Change in voltage drop is greater than 0.5 volts and
change in Manifold Absolute Pressure (MAP) is
greater than 0.05kPa (0.07 psi).
S 58X reference pulse not seen for 0.078 seconds.
Action Taken When the DTC Sets
S The Malfunction Indicator Lamp (MIL) will illumi-
nate.
S The ECM will record operating conditions at the
time the diagnostic fails. This information will be
stored in the Freeze Frame and Failure Records
buffer.
S A history DTC is stored.
Conditions for Clearing the MIL/DTCS The MIL will turn OFF after four consecutive igni-
tion cycles in which the diagnostic runs without a
fault.
S A history DTC will clear after 40 consecutive warm–
up cycles have occurred without a fault.
S The DTC(s) can be cleared using the scan tool.
S Disconnecting the ECM battery feed for more than
10 seconds.
Diagnostic Aids
An intermittent may be caused by a poor connection,
rubbed–through wire insulation or a wire broken inside the
insulation. Check for:
S Poor connection – Inspect the ECM harness and
connectors for improper mating, broken locks, im-
properly formed or damaged terminals, and poor
terminal–towire connections.
S Damaged harness – Inspect the wiring harness for
damage. If the harness appears to be OK, discon-
nect the ECM, turn the ignition ON and observe a
voltmeter connected to the 58X reference circuit at
the ECM harness connector while moving the con-
nectors and the wiring harnesses related to the
ECM. A change in voltage will indicate the location
of the fault.
S Reviewing the Failure Records vehicle mileage
since the diagnostic test last failed may help deter-
mine how often the condition that caused the DTC
to be set occurs. This may assist in diagnosing the
condition.

1F – 456IENGINE CONTROLS
DAEWOO V–121 BL4
DTC P0337 – 58X Crank Position Sensor No Signal
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Was the check performed?–Go to Step 2Go to
”On–Board
Diagnostic Sys-
tem Check”
21. Turn the ignition OFF.
2. Install a scan tool to the Data Link Connector
(DLC).
3. Start the engine.
4. Operate the vehicle within the Freeze Frame
conditions and Conditions for Setting the DTC
as noted.
Is Diagnostic Trouble Code (DTC) P0337 set?–Go to Step 3Go to Step 10
31. Turn the ignition OFF.
2. Disconnect the Crankshaft Position (CKP) sen-
sor connector.
3. Turn the ignition ON.
4. Using a voltmeter, check the voltage between
the CKP sensor wiring harness connector (En-
gine Control Module [ECM] side) terminal 1
and ground.
Does the voltage within the value specified?1.4 voltsGo to Step 4Go to Step 5
4Using a voltmeter, check the voltage between the
CKP sensor wiring harness connector (ECM side)
terminal 2 and ground.
Does the voltage within the value specified?1.4 voltsGo to Step 6Go to Step 5
51. Turn the ignition OFF.
2. Disconnect the ECM connector.
3. Turn the ignition ON.
4. Using a voltmeter, check the out put voltage of
the ECM terminal M21 and M5.
Does the voltage within the value specified?11–14 voltsGo to Step 8Go to Step 9
61. Reconnect the CKP sensor.
2. Using a voltmeter, back probe the ECM con-
nector terminal M21 and M5.
3. Observe the voltage while cranking the engine.
Does the voltage fluctuate between the specified
value?1.3–1.6 voltsGo to
”Diagnostic
Aids”Go to Step 7
71. Turn the ignition OFF.
2. Replace the CKP sensor.
Is the repair complete?–Go to Step 10–
8Check the CKP sensor high and low circuits for an
open, short to ground or voltage and repair as need-
ed.
Is the repair complete?–Go to Step 10–
91. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?–Go to Step 10–

ENGINE CONTROLS 1F – 457
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
101. 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 as supported in the text.
Does the scan tool indicate that this diagnostic ran
and passed?–Go to Step 11Go to Step 2
11Check if any additional DTCs are set.
Are any DTCs displayed that have not been diag-
nosed?–Go to
”Applicable
DTC table”System OK

1F – 458IENGINE CONTROLS
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0341
CAMSHAFT POSITION SENSOR RATIONALITY
System Description
The Camshaft Position (CMP) Sensor is used to correlate
crankshaft to camshaft position so that the Engine Control
Module (ECM) can determine which cylinder is ready to be
fueled by the injector. The CMP is also used to determine
which cylinder is misfiring when a misfire is present. When
the ECM cannot use the information from the CMP sensor,
a Diagnostic Trouble Code (DTC) is set, and the ECM will
fuel the engine using the Alternating Synchronous Double
Fire (ASDF) method.
Conditions for Setting the DTC
S CMP Sensor reference pulse is not detected at the
correct interval every 4 cylinders.
S Engine is running.
Action Taken When the DTC Sets
S The Malfunction Indicator Lamp (MIL) will illuminate
after three consecutive ignition cycle with a fail.
S 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.
S A history DTC is stored.Conditions for Clearing the MIL/DTC
S The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
S A history DTC will clear after 40 consecutive warm–
up cycles without a fault.
S DTC(s) can be cleared by using the scan tool.
S Disconnecting the ECM battery feed for more than
10 seconds.
Diagnostic Aids
An intermittent problem may be caused by a poor connec-
tion, rubbed–through wire insulation, or a wire that is bro-
ken inside the insulation.
Any circuitry, that is suspected as causing the complaint,
should be thoroughly checked for the following conditions:
S Backed–out terminals
S Improper mating
S Broken locks
S Improperly formed
S Damaged terminals
S Poor terminal–to–wire connection
S Physical damage to the wiring harness
Anytime a poor connection is present, the CMP Reference
Activity counter will stop incrementing.

ENGINE CONTROLS 1F – 459
DAEWOO V–121 BL4
Test Description
Number(s) below refer to the step number(s) on the Diag-
nostic Table.
1. The On–Board Diagnostic (EOBD) System Check
prompts the technician to complete some basic
checks and store the freeze frame and failure re-
cords data on the scan tool if applicable. This
creates an electronic copy of the data taken when
the malfunction occurred. The information is then
stored on the scan tool for later reference.
2. This step determines if DTC P0341 is the result of
a hard failure or an intermittent condition.
3. The counter should stop incrementing with the sen-sor electrical connector disconnected and set a
DTC P0342 with the sensor disconnected. If it still
increments the ECM is malfunctioning.
4. By moving the CMP sensor electrical connector, the
connections at the sensor are checked. Make sure
the electrical connector remains securely fastened.
5. A poor connection in any of the circuits at the CMP
will cause the CMP Resync Counter to increment.
Anytime a poor connection is present, the CMP
Reference Activity counter will stop incrementing
and the CMP Resync Counter will increment.
8. The replacement ECM must be reprogrammed.
Refer to the latest Techline procedure for ECM re-
programming.
DTC P0341 – Camshaft Position Sensor Rationality
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Was the check performed?–Go to Step 2Go to
”On–Board
Diagnostic Sys-
tem Check”
21. Turn the ignition OFF.
2. Install a scan tool to the Data Link Connector
(DLC).
3. Start the engine and operate the vehicle within
the Freeze Frame Conditions and Conditions
for Setting the DTC as noted.
Is Diagnostic Trouble Code (DTC) P0341 set?–Go to Step 3Go to
”Diagnostic
Aids”
31. Turn the ignition OFF.
2. Disconnect the Camshaft Position (CMP) sen-
sor connector.
3. Turn the ignition ON.
4. Using a voltmeter, check the voltage between
the CMP sensor harness connector (Engine
Control Module [ECM] side) terminal 3 and
ground.
Does the voltage near the specified value?5 VGo to Step 4Go to Step 5
4Using a voltmeter, check the voltage between the
CMP sensor wiring harness connector terminal 1
and ground.
Is the voltage over the specified value?10 voltsGo to Step 6Go to Step 10
5With a test light connected to ground, probe the
CMP harness connector terminal 3.
Does the test light illuminate?–Go to Step 8Go to Step 9
6With a test light connected to B+, probe the CMP
sensor harness connector terminal 2.
Does the test light illuminate?–Go to Step 7Go to Step 11
7Check for poor connections at the CMP sensor elec-
trical connectors and repair as needed.
Is the repair complete?–Go to Step 15Go to Step 13

1F – 460IENGINE CONTROLS
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
81. Turn the ignition OFF.
2. Disconnect the ECM connector.
3. Repair the short to voltage on the CMP signal
circuit.
Is the repair complete?–Go to Step 15Go to Step 14
9Check the CMP signal circuit for an open or short to
ground and repair as needed.
Is the repair complete?–Go to Step 15Go to Step 12
10Check for a poor connection or open in the CMP B+
feed circuit and repair as needed.
Is the repair complete?–Go to Step 15–
11Check for a poor connection or open in the CMP
ground circuit and repair as needed.
Is the repair complete?–Go to Step 15–
12Check for a poor connection in the CMP signal circuit
terminal and repair as needed.
Is the repair complete?–Go to Step 15Go to Step 14
131. Turn the ignition OFF.
2. Replace the CMP sensor.
Is the repair complete?–Go to Step 15
141. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?–Go to Step 15–
151. 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 as supported in the text.
Does the scan tool indicate that this diagnostic ran
and passed?–Go to Step 16Go to Step 2
16Check if any additional DTCs are set.
Are any DTCs displayed that have not been diag-
nosed?–Go to
Applicable DTC
table”System OK

ENGINE CONTROLS 1F – 461
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0342
CAMSHAFT POSITION SENSOR NO SIGNAL
System Description
The Camshaft Position (CMP) Sensor is used to correlate
crankshaft to camshaft position so that the Engine Control
Module (ECM) can determine which cylinder is ready to be
fueled by the injector. The CMP is also used to determine
which cylinder is misfiring when a misfire is present. When
the ECM cannot use the information from the CMP sensor,
a Diagnostic Trouble Code (DTC) is set, and the ECM will
fuel the engine using the Alternating Synchronous Double
Fire (ASDF) method.
Conditions for Setting the DTC
S CMP Sensor pulse is not detected at the correct
interval every 4 cylinders.
S Engine is running.
Action Taken When the DTC Sets
S The Malfunction Indicator Lamp (MIL) will illumi-
nate.
S 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.
S A history DTC is stored.Conditions for Clearing the MIL/DTC
S The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
S A history DTC will clear after 40 consecutive warm–
up cycles without a fault.
S DTC(s) can be cleared by using the scan tool.
S Disconnecting the ECM battery feed for more than
10 seconds.
Diagnostic Aids
An intermittent problem may be caused by a poor connec-
tion, rubbed–through wire insulation, or a wire that is bro-
ken inside the insulation.
Any circuitry, that is suspected as causing the complaint,
should be thoroughly checked for the following conditions:
S Backed–out terminals
S Improper mating
S Broken locks
S Improperly formed
S Damaged terminals
S Poor terminal–to–wire connection
S Physical damage to the wiring harness
Test Description
Number(s) below refer to the step number(s) on the Diag-
nostic Table.

1F – 462IENGINE CONTROLS
DAEWOO V–121 BL4
1. The On–Board Diagnostic (EOBD) System Check
prompts the technician to complete some basic
checks and to store the freeze frame and failure
records data on the scan tool if applicable. This
creates an electronic copy of the data taken when
the malfunction occurred. The information is then
stored on the scan tool for later reference.
2. This step determines if DTC P0342 is the result ofa hard failure or an intermittent condition.
4. Determines if voltage is available to the CMP.
7. This step checks for a voltage supplied by the ECM
to the CMP.
12. The replacement ECM must be reprogrammed.
Refer to the latest Techline procedure for ECM re-
programming.
DTC P0342 – Camshaft Position Sensor No Signal
StepActionValue(s)YesNo
1Perform an On–Board Diagnostic (EOBD) System
Check.
Was the check performed?–Go to Step 2Go to
”On–Board
Diagnostic Sys-
tem Check”
21. Turn the ignition OFF.
2. Install a scan tool to the Data Link Connector
(DLC).
3. Idle the engine.
Is the Camshaft Position (CMP) Active Count incre-
menting?–Go to Step 3Go to Step 4
31. Turn the ignition ON.
2. Review the Freeze Frame data and note the
parameters.
3. Start the engine and operate the vehicle within
the Freeze Frame Conditions and Conditions
for Setting the DTC as noted.
Is the CMP Active Counter incrementing?–Go to Step 13Go to Step 4
41. Turn the ignition OFF.
2. Disconnect the CMP sensor connector.
3. Turn the ignition ON.
4. With a test light connected to ground, probe
the CMP sensor harness connector, terminal 1.
Does the test light illuminate?–Go to Step 5Go to Step 6
5With a test light connected to B+, probe the CMP
sensor harness connector, terminal 2.
Does the test light illuminate?–Go to Step 7Go to Step 8
6Check for a poor connection or open in the CMP sen-
sor B+ feed circuit and repair as necessary.
Is the repair complete?–Go to Step 13Go to
”Diagnostic
Aids”
7Using a Digital Voltmeter (DVM), check the voltage
between the CMP sensor harness connector, termi-
nal 3 and ground.
Does the DVM display near the specified values?5 VGo to Step 11Go to Step 9
8Check for a poor connection or open in the CMP sen-
sor ground circuit and repair as necessary.
Is the repair complete?–Go to Step 13–
91. Turn the ignition OFF.
2. Disconnect the engine Control Module (ECM)
connector.
3. Check for the CMP signal circuit for an open or
short to round or short to B+, and repair as
needed.
Is the repair complete?–Go to Step 13Go to Step 10

ENGINE CONTROLS 1F – 463
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
10Check the CMP signal circuit for an open or short to
ground and repair as needed.
Is the repair complete?–Go to Step 13Go to Step 12
111. Turn the ignition OFF.
2. Replace the CMP sensor.
Is the repair complete?–Go to Step 13–
121. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?–Go to Step 13–
131. 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 as supported in the text.
Does the scan tool indicate that this diagnostic ran
and passed?–Go to Step 14Go to Step 2
14Check if any additional DTCs are set.
Are any DTCs displayed that have not been diag-
nosed?–Go to
”Applicable
DTC table”System OK

1F – 464IENGINE CONTROLS
DAEWOO V–121 BL4
DIAGNOSTIC TROUBLE CODE (DTC) P0351
IGNITION CONTROL CIRCUIT A FAULT (CYLINDER 1 & 4)
Circuit Description
The Engine Control Module (ECM) provides a ground for
the electronic spark timing A circuit. When the ECM re-
moves the ground path of the ignition primary coil, the
magnetic field produced by the coil collapses. The collaps-
ing magnetic field produces a voltage in the secondary coil
which fires the spark plug.
The circuit between the ECM and the electronic ignition
system ignition coil is monitored for an open circuit, short
to voltage, and short to ground. When the ECM detects a
problem in the electronic spark timing A circuit, it will set
Diagnostic Trouble Code (DTC) P0351.
Conditions for Setting the DTC
S Monitor fault feedback signal.
S Ignition ON.
S Fault flag increments fail count.
S Must receive more than 200 failures within 255 test
cycles.
Action Taken When the DTC Sets
S The Malfunction Indicator Lamp (MIL) will illumi-
nate.S 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.
S Low speed coolant fan turns on.
S A history DTC is stored.
Conditions for Clearing the MIL/DTC
S The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
S A history DTC will clear after 40 consecutive warm–
up cycles without a fault.
S DTC(s) can be cleared by using the scan tool.
S Disconnecting the ECM battery feed for more than
10 seconds.
Diagnostic Aids
An intermittent may be caused by a poor connection,
rubbed–through wire insulation or a wire broken inside the
insulation. Check for:
S Poor connection – Inspect the ECM harness and
connectors for improper mating, broken locks, im-
properly formed or damaged terminals, and poor
terminal–towire connection.