Opel Frontera UBS. Service manual — part 1497
7A1–18 TRANSMISSION CONTROL SYSTEM (4L30–E)
F0: Transmission Data
Item
Unit
Engine running at idle
Engine Speed
RPM
750
∼
900 RPM
Vehicle Speed
km/h, MPH
0 MPH
Throttle Position
%
0 %
Throttle Position Sensor
V
0.5
∼
1.0 V
Manifold Absolute Pressure
kPa
approx. 40 kPa
Barometric Pressure
kPa
approx. 102 kPa
AT Output Speed (Automatic Transmission)
RPM
0 RPM
AT Input Speed Ratio (Automatic Transmission)
0.0
Ignition Voltage
V
12.8
∼
14.1 V
AT Oil Temperature (Automatic Transmission)
°
C,
°
F
70
∼
80
°
C (158
∼
176
°
F)
AT Oil Life Monitor (Automatic Transmission)
%
100 %
Commanded Gear
1
Current Gear
1
Mode Switch C
Inactive, Active
Inactive
Mode Switch B
Inactive, Active
Inactive
Mode Switch A
Inactive, Active
Active
Mode Switch G
Inactive, Active
Active
Actual Gear
Park
1–2 Shift Solenoid A
Off, On
Off
2–3 Shift Solenoid B
Off, On
On
Brake Switch
Off, On
Off
Solenoid Brake Band
Off, On
Off
TCC Slip Speed
RPM
750
∼
900 RPM
TCC Status
Disabled, Enabled
Enabled
TCC Solenoid
Off, On
Off
TCC Duty Cycle
%
0 %
TCC Apply Mode
No Apply, In Apply
No Apply
TCC Release Mode
No, Yes
No
TCC On Mode
No, Yes
No
TCC Off Mode
No, Yes
Yes
Default Gear
No, Yes
No
Engine Warm
No, Yes
Yes
A/C Request
Yes, No
Yes
A/C Clutch Relay
Off, On
On
Winter Switch
Off, On
Off
Winter Drive Lamp
Off, On
Off
Kickdown Switch
Off, On
Off
ATF Lamp (Automatic Transmission)
Off, On
Off
Power Switch
Normal, Power
Normal
Power Drive Lamp
Off, On
Off
ABS Status
On, Off
Off
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–19
F1: PC Solenoid Data
Item
Unit
Engine running at idle
Engine Speed
RPM
750
∼
900 RPM
Vehicle Speed
km/h, MPH
0 MPH
Throttle Position
%
0 %
Throttle Position Sensor
V
0.5
∼
1.0 V
Manifold Absolute Pressure
kPa
approx. 40 kPa
Barometric Pressure
kPa
approx. 102 kPa
PCS Current (Pressure Control Solenoid)
A
approx. 1.0 A
PCS Actual Current (Pressure Control Solenoid)
A
approx. 1.0 A
PCS Duty Cycle (Pressure Control Solenoid)
%
approx. 45 %
Desired PCS Pressure (Pressure Control Solenoid)
kPa
43
∼
52 kPa
Shift Pressure (Line Pressure)
kPa
43
∼
52 kPa
Transmission Temperature
°
C,
°
F
75
∼
110
°
C (167
∼
230
°
F)
7A1–20 TRANSMISSION CONTROL SYSTEM (4L30–E)
OBD II Diagnostic Management System
Powertrain Control Module (PCM) Location
C07RW005
Class 2 Serial Data Bus
OBD II technology requires a much more sophisticated
PCM than does OBD I technology. The OBD II PCM
diagnostic management system not only monitors
systems and components that can impact emissions, but
they also run active tests on these systems and
components. The decision making functions of OBD II
PCMs have also greatly increased. To accommodate this
expansion in diagnostic complexity, Isuzu engineers have
designed the Class 2 serial data bus, which meets SAE
J1850 recommended practice for serial data.
“Serial Data” refers to information which is transferred in a
linear fashion – over a single line, one bit at a time. A “Data
Bus” is an electronic pathway through which serial data
travels.
TROOPER previously used a 5 volt data bus called
UART, which is an acronym for “Universal Asynchronous
Receive and Transmit”. When neither the vehicle’s
control module nor the diagnostic tool, such as a Tech2,
are “talking,” the voltage level of the bus at rest is 5 volts.
The two computers talk to each other at a rate of 8,192
bits per second, by toggling or switching the voltage on
the data bus from 5 volts to ground.
Class 2 data, which is used on OBD II vehicles, is quite
different. Data is transferred at a rate of 10.4 kilobits per
second, and the voltage is toggled between zero and 7
volts.
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–21
C07RT006
Class 2 data is also pulse width modulated. Each bit of
information can have one of two lengths: long or short. On
the other hand, UART data bits come in only one length
(short). The pulse width modulation of Class 2 data allows
better utilization of the data line.
The message carried on Class 2 data streams are also
prioritized. This means that if two devices try to
communication on the data line at the same time, only the
higher priority message will continue. The device with the
lower priority message must wait.
NOTE: The Class 2 data wire is always terminal 2 of the
new 16–terminal Data Link Connector (DLC).
16 – Terminal Data Link Connector (DLC)
OBD II standardizes Data Link Connector (DLC)
configurations. The DLC, formerly referred to as the
ALDL, will be a 16–terminal connector found on the lower
left side of the driver’s side instrument panel. All
manufacturers must conform to this 16–terminal
standard.
821RW262
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