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).