Opel Frontera UBS. Service manual — part 1176
6E–70
ENGINE DRIVEABILITY AND EMISSIONS
SPARK — Tech 2 Range –64
°
to 64
°
—
Displays the amount of spark advance being commanded
by the PCM on the IC circuit.
START-UP ECT — Tech 2 Range –40
°
C to 151
°
C
(–40
°
F to 304
°
F) —
Indicates the engine coolant temperature at the time that
the vehicle was started. Used by the HO2S diagnostic to
determine if the last start-up was a cold start.
START-UP IAT — Tech 2 Range –40
°
C to 151
°
C
(–40
°
F to 304
°
F) —
Indicates the intake air temperature at the time that the
vehicle was started. Used by the HO2S diagnostic to
determine if the last start-up was a cold start.
TP — Tech 2 Range 0%-100% —
TP (throttle position) angle is computed by the PCM from
the TP sensor voltage. TP angle should display “0%” at
idle and “100%” at wide open throttle.
TP SENSOR — Tech 2 Range 0.00-5.00 Volts —
The voltage being monitored by the PCM on the TP
sensor signal circuit.
CATALYST PROTECTION MODE — Tech 2 Displays
YES or NO —
“YES” displayed indicates that the PCM has detected
conditions appropriate to operate in TWC protection
mode. The PCM will decrease the air/fuel ratio to a value
that depends on mass air flow (higher mass air flow =
lower air/fuel ratio).
UPSHIFT LAMP (MANUAL TRANSMISSION)
VEHICLE SPEED — Tech 2 Range 0-255 km/h
(0-155 mph) —
The vehicle speed sensor signal is converted into km/h
and mph for display.
WEAK CYLINDER — Tech 2 Displays Cylinder
Number —
This indicates that the PCM has detected crankshaft
speed variations that indicate 2% or more cylinder firing
events are misfires.
Typical Scan Data Values
Use the Typical Scan Data Values Table only after the
On-Board Diagnostic System Check has been
completed, no DTC(s) were noted, and you have
determined that the on-board diagnostics are functioning
properly. Tech 2 values from a properly-running engine
may be used for comparison with the engine you are
diagnosing. The typical scan data values represent
values that would be seen on a normally-running engine.
NOTE: A Tech 2 that displays faulty data should not be
used, and the problem should be reported to the Tech 2
manufacturer. Use of a faulty Tech 2 can result in
misdiagnosis and unnecessary replacement of parts.
Only the parameters listed below are referred to in this
manual for use in diagnosis. For further
information on using the Tech 2 to diagnose the PCM and
related sensors, refer to the applicable reference section
listed below. If all values are within the typical range
described below, refer to the
Symptoms section for
diagnosis.
Test Conditions
Engine running, lower radiator hose hot, transmission in
park or neutral, closed loop, accessaries off, brake not
applied and air conditioning off.
6E–71
ENGINE DRIVEABILITY AND EMISSIONS
3.2/3.5L V-6 Engine
Tech 2
Parameter
Data List
Units
Displayed
Typical Data
Values (IDLE)
Typical Data
Values
(2500 RPM)
Refer To
A/C Clutch
Engine
On/Off
Off
Off
General Description and
Operation, A/C Clutch
Circuit Operation
A/C Request
Engine
Yes/No
No
No
General Description and
Operation, A/C Request
Signal
Air/Fuel Ratio
Engine
Ratio: _ to
1
14.7
14.7
General Description and
Operation, Fuel System
Metering Purpose
Barometric
Pressure
Engine
kPa
61-104 (depends
on altitude and
barometric)
61-104 (depends
on altitude and
barometric)
General Description and
Operation
CMP Act.
Counter (Cam
Position Activity)
Engine
Counts
0-255, always
increasing
0-255, always
increasing
DTC P0341 and P0342
Decel Fuel
Mode
Engine
Active/Inac
tive
Inactive
Inactive
General Description and
Operation, Deceleration
Mode
Desired EGR
Position
Engine
Percent
0%
0%
General Description and
Operation, EGR Pintle
Position Sensor
Desired Idle
Engine
RPM
750
—
General Description and
Operation, Idle Air Control
(IAC) Valve
ECT (Engine
Coolant Temp)
Engine
Degrees C,
Degrees F
80-100
°
C
(176-212
°
F)
80-100
°
C
(176-212
°
F)
General Description and
Operation, Engine Coolant
Temperature (ECT) Sensor
EGR Closed
Valve Pintle
Position
Engine
Steps
20-40
20-40
General Description and
Operation, EGR Pintle
Position Sensor
EGR Duty Cycle
Engine
Percent
0%
0%
General Description and
Operation, Linear EGR
Operation and Results of
Incorrect Operation
EGR Feedback
Engine
Volts
0.45-0.80
0.45-0.80
—
EGR
Normalized
Engine
Percent
0%
0%
—
Engine Load
Engine
Percent
2.0% - 5.5%
8.0% - 16.0%
General Description and
Operation, Mass Air Flow
(MAF) Sensor
Time From Start
Engine
Sec
Varies. Resets at
each engine
start.
Varies. Resets at
each engine
start.
—
Engine Speed
Engine
RPM
Within –50 to
+100 of “Desired
Idle”
Actual engine
speed
DTCs: P1508, P1509
Fuel Pump
Engine
On/Off
On
On
Engine Fuel
HO2S Bank 1
Sen.1 (millivolts)
O2 Sensor
Data
Millivolts
50-950 changing
quickly
50-950, always
changing quickly
General Description and
Operation, Fuel control
HO2S
6E–72
ENGINE DRIVEABILITY AND EMISSIONS
Tech 2
Parameter
Refer To
Typical Data
Values
(2500 RPM)
Typical Data
Values (IDLE)
Units
Displayed
Data List
HO2S Bank 2
Sen.1 (millivolts)
O2 Sensor
Data
Millivolts
50-950 changing
quickly
50-950 changing
quickly
General Description and
Operation, Fuel Control
HO2S
HO2S Bank 1
Sen.1
(ready/not
ready)
O2 Sensor
Data
Ready
Yes/No
Ready
Yes
Ready
Yes
General Description and
Operation, Fuel Control
HO2S; DTC: P0135
HO2S Bank 2
Sen.1
(ready/not
ready)
O2 Sensor
Data
Ready
Yes/No
Ready
Yes
Ready
Yes
General Description and
Operation, Fuel Control
HO2S
HO2S Warm-Up
Time Bank 1
Sen.1
O2 Sensor
Data
Seconds
25-45
25-45
General Description and
Operation, Fuel Control
HO2S
HO2S Warm-Up
Time Bank 2
Sen.1
O2 Sensor
Data
Seconds
25-45
25-45
General Description and
Operation, Fuel Control
HO2S
IAT (Intake Air
Temp)
Engine
Degrees C,
Degrees F
0-100
°
C,
depends on
underhood
0-80
°
C, depends
on underhood
General Description and
Operation, Intake Air
Temperature (IAT) Sensor
Ignition Voltage
Engine
Volts
12.8-14.1
12.8-14.1
General Description and
Operation, Electronic
Ignition System
Inj. Pulse Bank
1
Engine
Millisecond
s
2.0-4.0
2.5-4.0
General Description, Fuel
Metering, Fuel Injector
Inj. Pulse Bank
2
Engine
Millisecond
s
2.0-4.0
2.5-4.0
General Description, Fuel
Metering, Fuel Injector
KS Noise
Channel (Knock
Sensor)
Engine
Volts
0.10-0.40
0.50-1.75
General Description and
Operation, Knock Sensor
Purpose and Operation;
DTCs: P0352, P0327
Loop Status
Engine
Open/Clos
ed
Closed
Closed
General Description and
Operation, Fuel Metering
System; DTCs:
P0125-P0155
MAF (Mass Air
Flow)
Engine
Grams per
second
2.85-6.65
9.5-16.5
General Description and
Operation, MAF; DTCs:
P101, P0102, P0103
MAP kPa
(Manifold
Absolute
Pressure)
Engine
Kilopascals
—
—
General Description and
Operation, Manifold
Absolute Pressure (MAP)
Sensor; DTCs: P0106,
P0107, P0108
MIL
Engine
On/Off
Off
Off
On-Board Diagnostic
System Check
Power
Enrichment
Engine
Inactive/Ac
tive
Inactive
Inactive
General Description and
Operation, Acceleration
Mode
Spark
(Advance)
Engine
Degrees
Before Top
Dead
Center
15-22
34-44
General Description and
Operation, Electronic
Ignition System
6E–73
ENGINE DRIVEABILITY AND EMISSIONS
Tech 2
Parameter
Refer To
Typical Data
Values
(2500 RPM)
Typical Data
Values (IDLE)
Units
Displayed
Data List
Start-Up ECT
(Engine Coolant
Temp)
Engine
Degrees C,
Degrees F
Depends on
engine coolant
temperature at
time of start-up
Depends on
engine coolant
temperature at
time of start-up
General Description and
Operation, Engine Coolant
Temperature (ECT) Sensor
Start-Up IAT
(Intake Air
Temp)
Engine
Degrees C,
Degrees F
Depends on
intake air
temperature at
time of start-up
Depends on
intake air
temperature at
time of start-up
General Description and
Operation, Intake Air
Temperature (IAT) Sensor
TP
(Throttle
Position)
Engine
Percent
0
—
General Description and
Operation, Throttle
Position (TP) Sensor;
DTCs: P0121,
P0122,P0123
TP Sensor
(Throttle
Position)
Engine
Volts
0.50-0.82
0.60-1.00
General Description and
Operation, Throttle
Position (TP) Sensor;
DTCs: P0121,
P0122,P0123
Catalyst
Protection Mode
Engine
No/Yes
No
No
General Description, Fuel
Metering, catalytic
Converter Protection Mode
Vehicle Speed
Engine
MPH /
km/h
0
0
4L30-E Automatic
Transmission Diagnosis
EVAP Purge
Solenoid
Engine
Percent
65
99
General Description
VIM Solenoid
Engine
On/Off
On
On
General Description
Security Wait
Time
Engine
Active/Inac
tive
Inactive
Inactive
—
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