air condition DAEWOO MATIZ 2003 Service Owner's Guide
[x] Cancel search | Manufacturer: DAEWOO, Model Year: 2003, Model line: MATIZ, Model: DAEWOO MATIZ 2003Pages: 1184, PDF Size: 36 MB
Page 119 of 1184
ENGINE CONTROLS 1F–21
DAEWOO M-150 BL2
MULTIPLE ECM INFORMATION SENSOR DTCS SET
Circuit Description
The Engine Control Module (ECM) monitors various
sensors to determine engine operating conditions. The
ECM controls fuel delivery, spark advance, transaxle op-
eration, and emission control device operation based on
the sensor inputs.
The ECM provides a sensor ground to all of the sensors.
The ECM applies 5 volts through a pull-up resistor and
monitors the voltage present between the sensor and
the resistor to determine the status of the Engine Cool-
ant Temperature (ECT) sensor, the Intake Air Tempera-
ture (IAT) sensor. The ECM provides the Electric
Exhaust Gas Recirculation (EEGR) Pintle Position Sen-
sor, the Throttle Position (TP) sensor, the Manifold Ab-
solute Pressure (MAP) sensor, and the Fuel Tank
Pressure Sensor with a 5 volt reference and a sensor
ground signal. The ECM monitors the separate feed-
back signals from these sensors to determine their oper-
ating status.
Diagnostic Aids
Be sure to inspect the ECM and the engine grounds for
being secure and clean.
A short to voltage in one of the sensor circuits can cause
one or more of the following DTCs to be set: P0108,
P0113, P0118, P0123, P1106.If a sensor input circuit has been shorted to voltage, en-
sure that the sensor is not damaged. A damaged sensor
will continue to indicate a high or low voltage after the
affected circuit has been repaired. If the sensor has
been damaged, replace it.
An open in the sensor ground circuit between the ECM
and the splice will cause one or more of the following
DTCs to be set: P0108, P0113, P0118, P0123, P1106.
A short to ground in the 5 volt reference circuit or an
open in the 5 volt reference circuit between the ECM
and the splice will cause one or more of the following
DTCs to be set: P0107, P0112, P0117, P0122, P1107.
Check for the following conditions:
Inspect for a poor connection at the ECM. Inspect
harness connectors for backed-out terminals, im-
proper mating, broken locks, improperly formed or
damaged terminals, and poor terminal-to-wire con-
nection.
Inspect the wiring harness for damage. If the harness
appears to be OK, observe an affected sensor’s dis-
played value on the scan tool with the ignition ON and
the engine OFF while moving connectors and wiring
harnesses related to the affected sensors. A change
in the affected sensor’s displayed value will indicate
the location of the fault.
Page 120 of 1184
1F–22 ENGINE CONTROLS
DAEWOO M-150 BL2
Multiple ECM Information Sensor DTCs Set
StepActionValue(s)YesNo
1
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
Is the check complete.
–
Go to Step 2
Go to “Euro
On-Board
Diagnostic
System Check”
2
1. Turn the ignition OFF and disconnect the Engine
Control Module (ECM).
2. Turn the ignition ON and check the 5 volt
reference circuit for the following conditions:
Poor connection at the ECM.
Open between the ECM connector affected
sensors shorted to ground or voltage.
3. If a problem is found, locate and repair the open
or short circuit as necessary.
Is a problem found?
–
Go to Step 19Go to Step 3
3
1. Check the sensor ground circuit for the following
conditions:
Poor connection at the ECM or affected
sensors.
Open between the ECM connector and the
affected sensors.
2. If a problem is found, repair it as necessary.
Is a problem found?
–
Go to Step 19Go to Step 4
4
Measure the voltage of the Electric Exhaust Gas
Recirculation (EEGR) Pintle Position Sensor signal
circuit between ECM harness connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 5Go to Step 9
5
Measure the voltage of the Manifold Absolute
Pressure (MAP) sensor signal circuit between the
ECM harness connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 6Go to Step 11
6
Measure the voltage of the Throttle Position (TP)
sensor signal circuit between the ECM harness
connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 7Go to Step 12
7
Measure the voltage of the Intake Air Temperature
(IAT) sensor signal circuit between the ECM harness
connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 8Go to Step 13
8
Measure the voltage of the Engine Coolant
Temperature (ECT) sensor signal circuit between the
ECM harness connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 16Go to Step 14
9
1. Disconnect the EEGR valve.
2. Measure the voltage of the EEGR Pintle Position
sensor signal circuit between the ECM harness
connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 10Go to Step 15
10Replace the EEGR valve.
Is the repair complete?–Go to Step 19–
11
Locate and repair the short to voltage in the MAP
sensor signal circuit.
Is the repair complete?
–
Go to Step 19
–
Page 121 of 1184
ENGINE CONTROLS 1F–23
DAEWOO M-150 BL2
Multiple ECM Information Sensor DTCs Set (Cont’d)
StepActionValue(s)YesNo
12
Locate and repair the short to voltage in the TP
sensor signal circuit.
Is the repair complete?
–
Go to Step 19
–
13
Locate and repair the short to voltage in the IAT
sensor signal circuit.
Is the repair complete?
–
Go to Step 19
–
14
Locate and repair the short to voltage in the ECT
sensor signal circuit.
Is the repair complete?
–
Go to Step 19
–
15
Locate and repair the short to voltage in the EEGR
Pintle Position sensor circuit.
Is the repair complete?
–
Go to Step 19
–
16
Measure the voltage of the Fuel Tank Pressure
sensor signal circuit between the ECM harness
connector and ground.
Does the voltage measure near the specified value?
0 VGo to Step 18Go to Step 17
17
Locate and repair the short to voltage in the Fuel
Tank Pressure sensor signal circuit.
Is the repair complete?
–
Go to Step 19
–
18Replace the ECM.
Is the repair complete?–Go to Step 19–
19
1. Using the scan tool, clear the Diagnostic Trouble
Codes (DTCs).
2. Start the engine and idle at normal operating
temperature.
3. Operate the vehicle within the conditions for
setting the DTCs as specified in the supporting
text.
Does the scan tool indicate that this diagnostic ran
and passed?
–
Go to Step 20Go to Step 2
20
Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?
–
Go to
Applicable DTC
table
System OK
Page 123 of 1184
ENGINE CONTROLS 1F–25
DAEWOO M-150 BL2
ENGINE CRANKS BUT WILL NOT RUN
Caution: Use only electrically insulated pliers when
handling ignition wires with the engine running to
prevent an electrical shock.
Caution: Do not pinch or restrict nylon fuel lines.
Damage to the lines could cause a fuel leak, result-
ing in possible fire or personal injury.Important: If a no start condition exists, ensure the fuel
cutoff switch has not been tripped prior to further diagno-
sis.
Engine Cranks But Will Not Run
StepActionValue(s)YesNo
1
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
Is the check complete.
–
Go to Step 2
Go to “Euro
On-Board
Diagnostic
System Check”
2Crank the engine.
Does the engine start and continue to run?–System OkGo to Step 3
3
Perform a cylinder compression test.
Is the cylinder compression for all of the cylinders at
or above the value specified?
1250 kPa
(181 psi)
Go to Step 7Go to Step 4
4Inspect the timing belt alignment.
Is the timing belt in alignment?–Go to Step 6Go to Step 5
5Align or replace the timing belt as needed.
Is the repair complete?–Go to Step 2–
6Repair internal engine damage as needed.
Is the repair complete?–Go to Step 2–
7Inspect the fuel pump fuse.
Is the problem found?–Go to Step 8Go to Step 9
8Replace the fuse.
Is the repair complete?–Go to Step 2–
9
Check for the presence of spark from all of the
ignition wires while cranking the engine.
Is spark present from all of the ignition wires?
–
Go to Step 23Go to Step 10
10
1. Measure the resistance of the ignition wires.
2. Replace any of the ignition wire(s) with a
resistance above the value specified.
3. Check for the presence of spark from all of the
ignition wire.
Is spark present from all of the ignition wires?
5 kΩGo to Step 2Go to Step 11
11
1. Turn the ignition OFF.
2. Disconnect the crankshaft position (CKP) sensor
connector.
3. Turn the ignition ON.
4. Measure the voltage between following terminals:
Terminal 1 and 3 of the CKP sensor connector.
Terminal 2 and 3 of the CKP sensor connector.
Terminal 1 of the CKP sensor connector and
ground.
Terminal 2 of the CKP sensor connector and
ground.
Are the voltage measure within the value specified?
≈ 0.4 VGo to Step 13Go to Step 12
Page 164 of 1184
1F–66 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F100
DIAGNOSTIC TROUBLE CODE (DTC) – P0112 INTAKE AIR TEMPERATURE
SENSOR LOW VOLTAGE
Circuit Description
The Intake Air Temperature (IAT) Sensor uses a therm-
istor to control the signal voltage to the engine control
module (ECM). The ECM supplies a 5 volt reference
voltage and a ground to the sensor. When the air is cold,
the resistance is high ; therefore IAT sensor signal volt-
age will be high. If the intake air is warm, resistance is
low ; therefore the IAT sensor signal voltage will be low.
Conditions for Setting the DTC
The engine rum time is greater than 3 seconds.
IAT voltage is less than 0.01V
Action Taken when the DTC Sets
Emission related.
“Armed” after two trip with a fail.
“Disarmed” after one trip with a pass.
MIL on if failure is detected in three consecutive trips.
Stores a History DTC on the third consecutive with a
fail (The DTC will be armed after the second fail).Stores a Freeze Frame on the third consecutive trip
with a fail (if empty).
The ECM will default to 60°C(140°F)for intake air
temperature. The scan tool will not show the de-
faulted value.
Conditions for Clearing the MIL/DTC
The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm up
cycles without a fault.
DTC(s) can be cleared by using the scan tool.
Diagnostic aids
If the vehicle is at ambient temperature, compare the
IAT sensor to the engine coolant temperature(ECT) sen-
sor. The IAT sensor and the ECT sensor should be rela-
tively close to each other. Use the temperature vs.
Resistance Values table to evaluate the possibility of a
skewed sensor. Refer to “Temperature vs. Resistance”
in this Section.
Page 166 of 1184
1F–68 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F100
DIAGNOSTIC TROUBLE CODE (DTC) – P0113 INTAKE AIR TEMPERATURE
SENSOR HIGH VOLTAGE
Circuit Description
The Intake Air Temperature (IAT) Sensor uses a therm-
istor to control the signal voltage to the engine control
module (ECM). The ECM supplies a 5 volt reference
voltage and a ground to the sensor . when the air is cold,
the resistance is high ; therefore IAT sensor signal volt-
age will be high. If the intake air is warm, resistance is
low ; therefore the IAT sensor signal voltage will be low.
Conditions for Setting the DTC
The engine rum time is greater than 3 seconds.
IAT voltage is greater than 4.99V.
Action Taken when the DTC Sets
Emission related.
“Armed” after two trip with a fail.
“Disarmed” after one trip with a pass.
MIL on if failure is detected in three consecutive trips.
Stores a History DTC on the third consecutive with a
fail (The DTC will be armed after the second fail).Stores a Freeze Frame on the third consecutive trip
with a fail (if empty).
The ECM will default to last valid value for intake air
temperature. The scan tool will not show the de-
faulted value.
Conditions for Clearing the MIL/DTC
The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm up
cycles without a fault.
DTC(s) can be cleared by using the scan tool.
Diagnostic Aids
If the vehicle is at ambient temperature, compare the
IAT sensor to the engine coolant temperature (ECT)
sensor. The IAT sensor and the ECT sensor should be
relatively close to each other.
Use the temperature vs. Resistance Values table to
evaluate the possibility of a skewed sensor. Refer to
“Temperature vs. Resistance” in this Section.
Page 172 of 1184
1F–74 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F110
DIAGNOSTIC TROUBLE CODE (DTC) – P0118 ENGINE COOLANT
TEMPERATURE SENSOR HIGH VOLTAGE
Circuit Description
The coolant temperature sensor (ECT) uses a thermis-
tor to control the signal voltage to the engine control
module (ECM).
The ECM supplies a voltage on the signal circuit to the
sensor. When the air is cold, the resistance is high;
therefore the ECT sensor signal voltage will be high.
As the engine warms, the sensor resistance becomes
less, and the voltage drops. At normal engine operating
temperature, the voltage will be between 1.5 and 2.0
volts at the ECT sensor signal terminal.
The ECT sensor is used to the following items:
Fuel delivery.
Lock Up Clutch (LUC).
Ignition.
Evaporator Emission (EVAP) Canister Purge Valve.
Idle Air Control (IAC) valve.
Electric cooling fan.
Conditions for Setting the DTC
This DTC can be stored in “key-on” status.
The engine rum time is greater than 3 seconds.
The ECT sensor indicates that the engine coolant
temperature is less than –40°C(–40°F).
ECT voltage is greater than 4.98V.A low voltage condition exits.
Action Taken when the DTC Sets
The Malfunction Indicator Lamp (MIL) will illuminate.
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.
A history DTC is stored.
The coolant fan turns ON.
The ECM will substitutes a fixed MAP value and use
TP to control the fuel delivery (the scan tool will not
show defaulted)
Conditions for Clearing the MIL/DTC
The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm-up
cycles without a fault.
DTC(s) can be cleared by using the scan tool.
Diagnostic Aids
After the engine has started, the ECT should rise steadi-
ly to about 90°C(194°F) then stabilize when the thermo-
stat opens.
Use the temperature vs. resistance values table to eval-
uate the possibility of a skewed sensor. Refer to “Te m -
perature vs. Resistance” in this Section.
Page 175 of 1184
ENGINE CONTROLS 1F–77
DAEWOO M-150 BL2
DTC P0122 – Throttle Position Sensor Low Voltage
StepActionValue(s)YesNo
1
Perform an On-Board Diagnostic (EOBD) System
Check.
Was the check performed?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Install a scan tool to the Data Link Connector
(DLC).
2. Turn the ignition ON.
Is the Throttle Position (TP) sensor voltage below
the specified value?
0.20 VGo to Step 4Go to Step 3
3
1. Turn the ignition ON.
2. Review the Freeze Frame data and note the
parameters.
3. Operate the vehicle within the Freeze Frame
conditions and Conditions for Setting the DTC as
noted.
Is the TP sensor voltage below the specified value?
0.20 VGo to Step 4Go to Step 12
4
1. Turn the ignition OFF.
2. Disconnect the TP sensor connector.
3. Turn the ignition ON.
4. Jump the 5 volt reference circuit terminal B and
the TP signal circuit terminal C at the TP sensor
connector.
Is the TP sensor voltage over the specified value?
4.0 VGo to Step 10Go to Step 5
5
Connect a test light between B+ and the TP sensor
signal circuit terminal C.
Is the TP sensor voltage greater than the specified
value?
4.0 VGo to Step 6Go to Step 8
6
Check the TP sensor 5 volt reference circuit for an
open or short to ground and repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 7
7
Check the 5 volt reference circuit for a poor
connection at terminal 75 of the Engine Control
Module (ECM) and repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 11
8
Check the TP sensor signal circuit between terminal
C of the TP sensor and terminal 44 of the ECM for
an open or a short to ground and repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 9
9
Check the TP sensor signal circuit, terminal 44 of
the ECM for a poor connection and repair as
needed.
Is the repair complete?
–
Go to Step 12Go to Step 11
10Replace the throttle body assembly.
Is the action complete?–Go to Step 12–
11
1. Turn the ignition switch OFF.
2. Replace the ECM.
Is the action complete?
–
Go to Step 12
–
Page 179 of 1184
ENGINE CONTROLS 1F–81
DAEWOO M-150 BL2
DTC P0123 – Throttle Position Sensor High Voltage
StepActionValue(s)YesNo
1
Perform an On-Board Diagnostic (EOBD) System
Check.
Was the check performed?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Install a scan tool to the Data Link Connector
(DLC).
2. Turn the ignition ON.
Is the Throttle Position (TP) sensor voltage greater
than the specified value?
1.0 VGo to Step 4Go to Step 3
3
1. Turn the ignition ON.
2. Review the Freeze Frame data and note the
parameters.
3. Operate the vehicle within the Freeze Frame
conditions and Conditions for Setting the DTC as
noted.
Is the TP sensor voltage greater than the specified
value?
3.9 VGo to Step 4Go to Step 12
4
1. Turn the ignition OFF.
2. Disconnect the TP sensor connector.
3. Turn the ignition ON.
Is the TP sensor voltage less than the specified
value?
0.2 VGo to Step 5Go to Step 6
5
Probe the TP sensor ground circuit, terminal A at the
TP sensor connector with a test light connected to
B+.
Does the test light illuminate?
–
Go to Step 7Go to Step 9
6
Check the TP sensor signal circuit for an short to
voltage and repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 11
7
Check the 5 volt reference circuit for a short to B+
and repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 8
8
Check the TP sensor electric connector for a poor
connection and repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 10
9
Check the TP sensor ground circuit for an open and
repair as needed.
Is the repair complete?
–
Go to Step 12Go to Step 11
10Replace the throttle body assembly.
Is the action complete?–Go to Step 12–
11
1. Turn the ignition switch OFF.
2. Replace the Engine Control Module (ECM).
Is the action complete?
–
Go to Step 12
–
12
1. Using the scan tool, clear the Diagnostic Trouble
Codes (DTCs).
2. Start the engine and idle at normal operating
temperature.
3. Operate the vehicle within the Conditions for
setting this DTC as specified in the supporting
text.
Does the scan tool indicate that this diagnostic has
run and passed?
–
Go to Step 13Go to Step 2
Page 182 of 1184
1F–84 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F130
DIAGNOSTIC TROUBLE CODE (DTC) – P0131 OXYGEN SENSOR LOW
V O LTA G E
Circuit Description
The engine control module (ECM) supplies a voltage of
about 450m volts between the ECM terminals 44 and
13. The oxygen (O
2) sensor varies the voltage within a
range of about 1volt if the exhaust is rich, down to about
100mm volts if the exhaust is lean. The O
2 sensor is like
an open circuit and produces no voltage when it is below
350°C(600°F). An open O
2 sensor circuit or a cold O2
sensor causes “open loop” operation.
Conditions for Setting the DTC
(Case A)
The engine controls system is in closed loop.
Engine speed is less than 6,000rpm.
The oxygen sensor voltage is below 0.07V for at least
40seconds.
DTCs P0107, P0108, P0117, P0118, P0122, P0123,
P0335, P0336, P0341, P0342, P0400, P0404,
P0405, P0406, P0445, P0444 are NOT SET.
(Case B)
The engine controls system is in closed loop.
Engine speed is less than 6,000rpm.
The oxygen sensor voltage is between 0.352 and
0.499 at least 10seconds.
Action Taken when the DTC Sets
The Malfunction Indicator Lamp (MIL) will illuminate.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.
A history DTC is stored.
Conditions for Clearing the MIL/DTC
The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm-up
cycles without a fault.
DTC(s) can be cleared by using the scan tool.
Disconnecting the ECM battery feed for more than 10
seconds.
Diagnostic Aids
Normal scan tool voltage varies between 0.1volts and
0.9 volts while in closed loop.
Inspect the oxygen (O
2) sensor wire. The O2 sensor
may be positioned incorrectly and contacting the ex-
haust manifold.
Check for an intermittent ground in the wire between the
O
2 sensor and the engine control module.
Perform an injector 2alance test to determine if a re-
stricted fuel injector may be causing the lean condition.
Vacuum of crankcase leaks will cause a lean running
condition.
An exhaust manifold gasket leak of a cracked exhaust
manifold may cause outside air to be pulled into the ex-
haust and past the sensor.