Daewoo Nubira. Manual — part 128
ENGINE CONTROLS 1F – 7
DAEWOO V–121 BL4
EGR Data Display
At idle / Upper Radiator / Closed Throttle / Park or Neutral / Closed loop / Acc. OFF
Scan Tool Parameter
Units Displayed
Typical Data
Engine Speed
RPM
µ
100 rpm from the Desired rpm
Ignition Voltage
Volts
12.0–15.0
IAC Position
Counts
5–60
Engine Coolant Temperature
C – F
85
³
–115
³
C(185
³
–239
³
F) Varies with
the coolant temperature
Throttle Position Angle
%
0% (up to 100% at wide open
throttle)
Throttle Position Sensor
Volts
0.200–0.900v (up to 5.0 at wide
open throttle)
EGR Actual Position
%
0%
EGR Desired Position
%
0%
EGR Feedback
Volt
EGR Closed Pintle Position
Counts
–
EGR Trip Sample Count
Counts
0
EGR EWMA Threshold
Counts(signed)
EGR EWMA
Counts(signed)
EGR Pintle Position Error
Counts(signed)
Engine Run Time
Seconds
Varies (Since start up)
BPW Bank 1
mS
0–999.9
Air Fuel Ratio
Ratio
14.6:1 (Varies)
Spark
Degrees
Varies
MAP
kPa
25–35 kPa
BARO
kPa
65–100 kPa (varies with altitude and
with the BARO pressure)
Calculated Load
%
0–100
Vehicle Speed
mph
0
1F – 8
I
ENGINE CONTROLS
DAEWOO V–121 BL4
Oxygen Sensor Data Display
At idle / Upper Radiator / Closed Throttle / Park or Neutral / Closed loop / Acc. OFF
Scan Tool Parameter
Units Displayed
Typical Data
Engine Speed
RPM
µ
100 rpm from the Desired rpm
Engine Run Time
Seconds
Varies (Since start up)
Loop Status
Open/Closed
Closed
O2S Bank 1 Sensor 1
mV
0–1132
O2S Bank 1 Sensor 1
Not Ready, Ready
Ready
Rich/Lean Bank 1
Lean, Rich
–
Injector Pulse Bank 1
mS
Varies
Start Up Coolant Temperature
C – F
4
³
–34
³
C (39
³
–93
³
F) Varies with the
underhood temperature when start-
ing
Engine Coolant Temperature
C – F
85
³
–115
³
C (185
³
–239
³
F) Varies
with the coolant temperature
Start Up Intake Air Temperature
C – F
12
³
–42
³
C (54
³
–108
³
F) Varies with
the underhood temperature when
starting
Intake Air Temperature
C – F
Varies with the underhood tempera-
ture
O2S Time to Activity Bank 1 Sensor
1
Seconds
Varies
Short Term FT Bank 1
%
–100 to 100 (Varies)
Long Term FT Bank 1
%
–100 to 100 (Varies)
TP Angle
%
0% (up to 100% at wide open
throttle)
Calculated Air Flow
g/sec
Varies
MAP
kPa
25–35 kPa
EVAP Purge PWM
%
0–100
Ignition 1
Volts
12.0–15.0
Air Fuel Ratio
Ratio
14.6:1 (Varies)
Decel Fuel Mode
Inactive/Active
–
Power Enrichment
Inactive/Active
–
O2S Warm Up Time Bank 1 – Senor
1
Seconds
Varies
HO2S Bank 1 Sensor 2
mV
0–1000 and varying
ENGINE CONTROLS 1F – 9
DAEWOO V–121 BL4
Misfire Data Display
At idle / Upper Radiator / Closed Throttle / Park or Neutral / Closed loop / Acc. OFF
Scan Tool Parameter
Units Displayed
Typical Data
Misfire Current #1
0–255 counts
0 (increase with a misfire)
Misfire History #1
0–255 counts
0 (increase with a misfire)
Misfire Current #2
0–255 counts
0 (increase with a misfire)
Misfire History #2
0–255 counts
0 (increase with a misfire)
Misfire Current #3
0–255 counts
0 (increase with a misfire)
Misfire History #3
0–255 counts
0 (increase with a misfire)
Misfire Current #4
0–255 counts
0 (increase with a misfire)
Misfire History #4
0–255 counts
0 (increase with a misfire)
Misfire Failures First Fail
0–255 counts
0 (increase with a misfire)
Misfire Passes First Fail
0–255 counts
0 (increase with a misfire)
Total Misfire Current Count
0–255 counts
0 (increase with a misfire)
Weak Cylinder
–
Engine Speed
RPM
µ
100 rpm from the Desired RPM
TP Angle
%
0% (up to 100% at wide open
throttle)
Calculated Load
%
0–100
Engine Coolant Temperature
C
S
F
85
³
–115
³
C(185
³
–239
³
F) Varies with
the coolant temperature
Intake Air Temperature
C
S
F
10
³
–80
³
C(50
³
–176
³
F) Varies with
the underhood temperature
Cam Active Counter
Counts
0–255
Spark Advance
Degrees
Varies
G Sensor
Volts
–
EGR Desired Position
%
0%
EGR Actual Position
%
0%
MAP
kPa
25–35 kPa
Vehicle Speed
mph
0
Air Conditioning Request
On/Off
Off
Air Conditioning Clutch
On/Off
Off
Knock Active Counter
Counts
0–255
Knock Retard
Degrees
Varies
Decel Fuel Mode
Yes/No
–
Power Enrichment Mode
Yes/No
–
Injector Pulse Bank 1
mS
Varies
O2S Bank 1 Sensor 1
mV
0–1000 and varying
HO2S Bank 1 Sensor 2
mV
0–1000 and varying
Short Term FT Bank 1
%
–100 to 100 (Varies)
Long Term FT Bank 1
%
–100 to 100 (Varies)
1F – 10
I
ENGINE CONTROLS
DAEWOO V–121 BL4
TEC Display Table
At idle / Upper Radiator / Closed Throttle / Park or Neutral / Closed loop / Acc. OFF
Scan Tool Parameter
Units Displayed
Typical Data
Engine Speed
RPM
µ
100 rpm from the Desired RPM
TP Angle
%
0 (up to 100% at wide open throttle)
Engine Coolant Temperature
C,F
85
³
–115
³
C (185
³
–239
³
F) Varies
with the coolant temperature
Intake Air Temperature
C,F
10
³
–80
³
C(50
³
–176
³
F) Varies with
the underhood temperature
Cam Active Counter
Counts
0–255
Spark
Degrees
Varies
MAP
kPa
25–35 kPa
Vehicle Speed
mph
0
Decel Fuel Mode
Yes/No
–
Power Enrichment Mode
Yes/No
–
Injector Pulse Bank 1
mS
Varies
Crank Error Latched
Yes/No
–
Sum Out Of Range
Yes/No
–
Opposing Factor Out Of Range
Yes/No
–
Factor Out Of Range
Yes/No
–
Enable Criteria Not Met
Yes/No
–
Cat Damaging Misfire
Yes/No
–
Test is Running
Yes/No
–
Learned This Key Cycle
Yes/No
–
Attempts to Learn
Counts
ENGINE DATA DISPLAY TABLE
DEFINITIONS
PCM/ECM Data Description
The following information will assist in diagnosing emis-
sion or driveability problems. A first technician can view
the displays while the vehicle is being driven by second
technician. Refer to Powertrain On–Board Diagnostic
(OBD II) System Check for additional information.
A/C Clutch
The A/C Relay represents the commanded state of the
A/C clutch control relay. The A/C clutch should be en-
gaged when the scan tool displays ON.
A/C Pressure
The A/C High Side displays the pressure value of the A/C
refrigerant pressure sensor. The A/C High Side helps to
diagnose the diagnostic trouble code (DTC) P0533.
A/C Request
The A/C Request represents whether the air conditioning
is being requested from the HVAC selector. The input is re-
ceived by the instrument panel cluster and then sent over
universal asynchronous receiver transmitter (UART) seri-
al data to the powertrain control module (PCM)/engine
control module (ECM) and finally to the scan tool over
class 2 serial data.
Air Fuel Ratio
The Air Fuel Ration indicates the air to fuel ratio based on
the Oxygen Sensor (O2S 1) inputs. The PCM/ECM uses
the fuel trims to adjust fueling in order to attempt to main-
tain an air fuel ratio of 14.7:1.
BARO
The Barometric Pressure (BARO) sensor measures the
change in the intake manifold pressure which results from
altitude changes. This value is updated at ignition ON and
also at Wide Open Throttle (WOT).
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