ABS OPEL FRONTERA 1998 Workshop Manual

6E–226
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
0018
Manifold Absolute Pressure (MAP) Sensor
The manifold absolute pressure (MAP) sensor responds
to changes in intake manifold pressure. The MAP sensor
signal voltage to the ECM varies from below 2 volts at idle
(high vacuum) to above 4 volts.
The MAP sensor is used to determine the following:
Boost pressure for injector control.
Barometric pressure (BARO).
If the ECM detects a voltage that is lower than the
possible range of the MAP sensor, DTC P0107 will be set.
A signal voltage higher than the possible range of the
sensor will set DTC P0108. An intermittent low or high
voltage will set DTC P1107 or DTC P1106, respectively.
The ECM can detect a shifted MAP sensor. The ECM
compares the MAP sensor signal to a calculated MAP
based on throttle position and various engine load factors.
If the ECM detects a MAP signal that varies excessively
above or below the calculated value, DTC P0106 will set.
Engine Control Module (ECM)
The engine control module (ECM) is located in the engine
room.
The ECM constantly observes the information from
various sensors. The ECM controls the systems that
affect vehicle performance. The ECM performs the
diagnostic function of the system. It can recognize
operational problems, alert the driver through the MIL
(Service Engine Soon lamp), and store diagnostic trouble
codes (DTCs). DTCs identify the problem areas to aid the
technician in making repairs.
ECM Function
The ECM supplies 5, 12 and 110 volts to power various
sensors or switches. The power is supplied through
resistances in the ECM which are so high in value that a
test light will not light when connected to the circuit. In
some cases, even an ordinary shop voltmeter will not give
an accurate reading because its resistance is too low.
Therefore, a digital voltmeter with at least 10 megohms
input impedance is required to ensure accurate voltage
readings. The ECM controls output circuits such as theinjectors, glow relays, etc., by controlling the ground or
the power feed circuit through transistors or through
either of the following two devices:
Output Driver Module (ODM)
Quad Driver Module (QDM)
ECM Components
The ECM is designed to maintain exhaust emission levels
to government mandated standards while providing
excellent driveability and fuel efficiency. The ECM
monitors numerous engine and vehicle functions via
electronic sensors such as the crankshaft position (CKP)
sensor, and vehicle speed sensor (VSS). The ECM also
controls certain engine operations through the following:
Fuel injector control
Rail pressure control
ECM Voltage Description
The ECM supplies a buffered voltage to various switches
and sensors. It can do this because resistance in the
ECM is so high in value that a test light may not illuminate
when connected to the circuit. An ordinary shop
voltmeter may not give an accurate reading because the
voltmeter input impedance is too low. Use a 10-megohm
input impedance digital voltmeter to assure accurate
voltage readings.
The input/output devices in the ECM include
analog-to-digital converters, signal buffers, counters,
and special drivers. The ECM controls most components
with electronic switches which complete a ground circuit
when turned “ON.” These switches are arranged in
groups of 4 and 7, called either a surface-mounted quad
driver module (QDM), which can independently control up
to 4 output terminals, or QDMs which can independently
control up to 7 outputs. Not all outputs are always used.
ECM Input/Outputs
Inputs – Operating Conditions Read
Air Conditioning “ON” or “OFF”
Engine Coolant Temperature
Crankshaft Position
Electronic Ignition
Manifold Absolute Pressure
Battery Voltage
Intake Throttle Position
Vehicle Speed
Fuel Temperature
Oil Temperature
Intake Air Temperature
EGR boost pressure
Oil rail pressure
Camshaft Position
Accelerator position
Outputs – Systems Controlled
Exhaust Gas Recirculation (EGR)
Injector Control
QWS

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–1
TRANSMISSION
TRANSMISSION CONTROL SYSTEM (4L30–E)
CONTENTS
Service Precaution 7A1–2. . . . . . . . . . . . . . . . . . . . . .
General Description 7A1–2. . . . . . . . . . . . . . . . . . . . .
Shift Control 7A1–6. . . . . . . . . . . . . . . . . . . . . . . . . .
Band Apply Control 7A1–6. . . . . . . . . . . . . . . . . . . .
Torque Converter Clutch Control 7A1–6. . . . . . . . .
Line Pressure Control 7A1–6. . . . . . . . . . . . . . . . . .
On–Board Diagnostic System 7A1–6. . . . . . . . . . .
Fail Safe Mechanism 7A1–6. . . . . . . . . . . . . . . . . . .
Torque Management Control 7A1–6. . . . . . . . . . . .
ATF Warning Control 7A1–6. . . . . . . . . . . . . . . . . . .
ABS Control (If equipped) 7A1–6. . . . . . . . . . . . . .
Winter Drive Mode 7A1–9. . . . . . . . . . . . . . . . . . . . .
Backup Mode 7A1–9. . . . . . . . . . . . . . . . . . . . . . . . .
Functions of Input / Output Components 7A1–10. .
Diagnosis 7A1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Trans Indicator 7A1–11. . . . . . . . . . . . . . . . . .
Diagnostic Check 7A1–11. . . . . . . . . . . . . . . . . . . . . .
“Check Trans” Check 7A1–12. . . . . . . . . . . . . . . . . .
Tech2 OBD II Connection 7A1–13. . . . . . . . . . . . . . .
OBD II Diagnostic Management System 7A1–18. .
16 – Terminal Data Link Connector (DLC) 7A1–19.
Malfunction Indicator Lamp (MIL) 7A1–20. . . . . . . .
Types Of Diagnostic Trouble Codes
(DTCs) 7A1–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clear DTC 7A1–20. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC Check 7A1–21. . . . . . . . . . . . . . . . . . . . . . . . . . .
PCM Precaution 7A1–21. . . . . . . . . . . . . . . . . . . . . . .
Information On PCM 7A1–21. . . . . . . . . . . . . . . . . . .
Intermittent Conditions 7A1–21. . . . . . . . . . . . . . . . .
Transmission And PCM Identification 7A1–22. . . . .
Diagnostic Trouble Code (DTC)
Identification 7A1–24. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0218 Transmission Fluid Over
Temperature 7A1–25. . . . . . . . . . . . . . . . . . . . . . . . . . . Conditions For Setting The DTC 7A1–25. . . . . . . . .
Action Taken When The DTC Sets 7A1–25. . . . . . .
Conditions For Clearing The DTC 7A1–25. . . . . . . .
Diagnostic Aids 7A1–25. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 7A1–25. . . . . . . . . . . . . . . . . . . . . . .
DTC P0560 System Voltage Malfunction 7A1–27. . .
DTC P0705 Transmission Range Switch
(Mode Switch) Illegal Position 7A1–30. . . . . . . . . . . .
DTC P0706 Transmission Range Switch
(Mode Switch) Performance 7A1–33. . . . . . . . . . . . . .
DTC P0712 Transmission Fluid Temperature
(TFT) Sensor Circuit Low Input 7A1–36. . . . . . . . . . .
DTC P0713 Transmission Fluid Temperature
(TFT) Sensor Circuit High Input 7A1–39. . . . . . . . . . .
DTC P0719 TCC Brake Switch Circuit High
(Stuck On) 7A1–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0722 Transmission Output Speed
Sensor (OSS) Low Input 7A1–45. . . . . . . . . . . . . . . . .
DTC P0723 Transmission Output Speed
Sensor (OSS) Intermittent 7A1–48. . . . . . . . . . . . . . .
DTC P0730 Transmission Incorrect
Gear Ratio 7A1–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0748 Pressure Control Solenoid
(PCS) (Force Motor) Circuit Electrical 7A1–54. . . . .
DTC P0753 Shift Solenoid A Electrical 7A1–56. . . . .
DTC P0758 Shift Solenoid B Electrical 7A1–59. . . . .
DTC P1790 ROM Transmission Side Bad
Check Sum 7A1–63. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1792 EEPROM Transmission Side
Bad Check Sum 7A1–64. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1835 Kickdown Switch Always On 7A1–65. . .
DTC P1850 Brake Band Apply Solenoid
Malfunction 7A1–67. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1860 TCC Solenoid Electrical 7A1–71. . . . . . .

7A1–6
TRANSMISSION CONTROL SYSTEM (4L30–E)
Shift Control
The transmission gear is shifted according to the shift
pattern selected by the driver. In shifting gears, the gear
ratio is controlled by the ON/ OFF signal using the shift
solenoid A and the shift solenoid B.
Band Apply Control
The band apply is controlled when in the 3–2 downshift
(engine overrun prevention) and the garage shift (shock
control).
The band apply solenoid is controlled by the signal from
the Pulse Width Modulation (PWM) to regulate the flow of
the oil.
Torque Converter Clutch Control
The clutch ON/OFF is controlled by moving the converter
clutch valve through shifting Torque Converter Clutch
(TCC) solenoid using the ON/OFF signal.
Line Pressure Control
The throttle signal allows the current signal to be sent to
the force motor. After receiving the current signal, the
force motor activates the pressure regulator valve to
regulate the line pressure.
On–Board Diagnostic System
Several malfunction displays can be stored in the
Powertrain Control Module (PCM) memory, and read out
of it afterward.The serial data lines, which are required for the testing of
the final assembly and the coupling to other electronic
modules, can be regulated by this function.
Fail Safe Mechanism
If there is a problem in the transmission system, the PCM
will go into a “backup” mode.
The vehicle can still be driven, but the driver must use the
select lever to shift gears.
Torque Management Control
The transmission control side sends the absolute spark
advance signal to the engine control side while the
transmission is being shifted. This controls the engine
spark timing in compliance with the vehicle running
condition to reduce the shocks caused by the change of
speed.
ATF Warning Control
The oil temperature sensor detects the ATF oil
temperature to control the oil temperature warning, TCC,
and the winter mode.
ABS Control (If equipped)
When the select lever is at “L” or “R” range, a signal is sent
to the ABS controller as one of the ABS control
conditions.

7A1–10
TRANSMISSION CONTROL SYSTEM (4L30–E)
Functions of Input / Output Components
ComponentsFunction
Speed sensor
(fixed to transmission
(T/M))Senses rotation of output shaft and feeds the data to Powertrain Control Module
(PCM).
Throttle position sensor
(TPS)
(fixed to engine)Senses the extent of throttle valve opening and the speed of the throttle valve
lever motion to open the valve. Feeds the data to PCM.
I
N
Brake Switch (SW)
(fixed to brake pedal)Senses whether the driver has pressed the brake pedal or not and feeds the
information to PCM.
N-
P
U
Kickdown SW
(fixed to accelerator pedal)Senses whether the driver has pushed the accelerator pedal fully or not, and
feeds the information to PCM.
U
TMode SW (fixed to T/M)Senses the select lever position, and feeds the information to PCM.

S
I
Power drive SW
(fixed to front console)Senses whether the driver has selected the power mode, and feeds the informa-
tion to PCM.
I
G-T/M oil temp. sensorSenses the T/M oil temperature and feeds the data to PCM
N
A
L
Engine coolant tempera-
ture sensorSenses the engine coolant temperature, and feeds the data to PCM.
LEngine speed signalFeeds the signals monitoring engine speed to PCM from crank angle sensor.
Air conditioning informationSenses whether the air conditioner has been switched on or not, and feeds the
information to PCM.
Winter switch (fixed to front
console)Senses whether the driver has selected the winter mode, and feeds the informa-
tion to PCM.
Cruise controller * (Over-
drive OFF signal)Downshift takes place when Overdrive OFF signal is received from auto cruise
control unit.
S
Shift solenoid A, BSelects shift point and gear position suited to the vehicle running condition on
the basis of PCM output.
O
S
O-
L
Band apply solenoidControls oil flow suited to the vehicle running condition on the basis of PCM out-
put.
O
U
T-
P
E-
N
O
Torque Converter
Clutch solenoidControls clutch engagement/disengagement suited to the vehicle running condi-
tion on the basis of PCM output.
P
U
T

O
I
DForce motor
(Pressure regulator
valve)Adjusts the oil pump delivery pressure to line pressure suited to the vehicle run-
ning condition on the basis of PCM output.

S
I
Power drive mode lampInforms the driver whether the vehicle is in power mode or not.
I
G-Winter drive mode lampInforms the driver whether the vehicle is in winter mode or not.G
N
A
L
T/M monitor lamp
(“CHECK TRANS”)Informs the driver of failure in the system.
LATF warning lampLights when ATF oil temperature rises.
ABS signal *When the select lever is at “Reverse” or “L” range, sends a signal to the ABS
controller as one of the ABS control conditions.
* If equipped

7A1–20
TRANSMISSION CONTROL SYSTEM (4L30–E)
821RW263
810RT022
PIN 1 – (Not used)
PIN 2 – J1850 Bus + L line on 2–wire systems, or
single wire (Class 2)
PIN 3 – (Not used)
PIN 4 – Chassis ground pin
PIN 5 – Signal ground pin
PIN 6 – PCM diagnostic enable
PIN 7 – (Not used)
PIN 8 – (Not used)
PIN 9 – Primary UART
PIN 10 – (Not used)
PIN 11 – (Not used)
PIN 12 – ABS diagnostic or CCM diagnostic enable
PIN 13 – SIR diagnostic enable
PIN 14 – (Not used)
PIN 15 – (Not used)
PIN 16 – Battery power from vehicle unswitched (4
AMP MAX.)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) looks the same as
the MIL you are already familiar with (“CHECK ENGINE”
lamp). However, OBD II requires that it illuminate under a
strict set of guidelines. Basically, the MIL is turned on
when the PCM detects a DTC that will impact the vehicle’s
emissions.
The MIL is under the control of the Diagnostic Executive.
The MIL will be turned on if a component or system which
has an impact on vehicle emissions indicates a
malfunction or fails to pass an emissions–related
diagnostic test. It will stay on until the system or
component passes the same test, for three consecutive
trips, with no emissions–related faults.
Types Of Diagnostic Trouble Codes (DTCs)
The Diagnostic Executive classifies Diagnostic Trouble
Codes (DTCs) into certain categories. Each type has
different requirements to set the code, and the Diagnostic
Executive will only illuminate the Malfunction Indicator
Lamp (MIL) for emissions–related DTCs. DTCs fall into
four categories: A, B, C, and D; only types A and B are
emission–related The following descriptions define these
categories:
TYPE A
Will store the DTC and turn on the MIL (“Check Engine”
lamp) on the first trip in which an emission–related
diagnostic test has run and reported a “test failed” to the
Diagnostic Executive.
TYPE B
Will store the DTC and turn on the MIL on the second
consecutive trip in which an emission–related diagnostic
test has run and reported a “test failed” to the Diagnostic
Executive. After one failure, the type B DTC is “armed,”
or prepared to store a history code and turn on the MIL if
a second failure occurs. One passed test will disarm a
type B DTC. Some special conditions apply to misfire and
fuel trim DTCs. For a type B DTC to store and turn on the
MIL, two ignition cycles are required.
TYPE C
Will store the DTC and turn on a “SERVICE” lamp
(“Check Trans” lamp) on the first trip that a
non–emission–related diagnostic test has run and
reported a “test failed” to the Diagnostic Executive. This
type of DTC will be used in future applications.
TYPE D
Will store a DTC but will not turn on the MIL on the first
trip that a non–emission–related diagnostic test has run
and reported a “test failed” to the Diagnostic Executive.
These codes can be very helpful for vehicle service when
the driver may comment about a condition, but the MIL did
not turn on.
Clear DTC
NOTE: If you clear the DTC (Diagnostic Trouble Codes)
you will not be able to read any codes recorded during the
last occurrence.

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–43
DTC P0719 TCC Brake Switch Circuit High (Stuck On)
StepActionYe sNo
11. Install the scan tool.
2. With the engine “off”, turn the ignition switch “on”. If ABS code
is set, check applicable fuse.
NOTE: Before clearing DTC(s), use the scan tool to record “Failure
Records” for reference, as data will be lost when the “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
4. Apply then release the brake pedal.
Does the scan tool display “TCC Brake Switch” as “closed” with
the brake pedal applied, and then display “open” when the brake
pedal is released?
Go to Diagnostic
Aids
Go to Step 2
21. Connect the test light to ground.
2. Back probe ignition feed circuit terminal B13–1 at the brake
switch.
Is the test light “on”?
Go to Step 3Go to Step 4
31. Connect the test light to ground.
2. Back probe circuit terminal B13–4 at the brake switch.
Is the test light “off”?
Go to Step 7Go to Step 5
4Repair the open in battery feed circuit terminal B13–1 to the brake
switch.
If fuse is open, check circuit terminal B13–4 for a short to ground.
Is the repair complete?
Go to Step 13—
5Disconnect brake switch connector B–13 and ignition switch “on”.
Is the test light “on”?
Go to Step 8Go to Step 6
6Check the brake switch short (B13–1 and B13–4).
Was a problem found?
Go to Step 9Go to Step 10
7Check circuit terminal B13–4 for a short to voltage.
Ignition switch “on”.
Is the test light “on”?
Go to Step 8Go to Step 10
81. Disconnect the J3 (BLUE) PCM connector.
2. Check circuit terminal B13–4 for a short to voltage.
Was a problem found?
Go to Step 13Go to Step 10
9Replace the brake switch.
Is the replacement complete?
Go to Step 13—
101. Turn the ignition “off”.
2. Reconnect the J3 (BLUE) PCM connector.
3. Turn the ignition “on”.
Does the scan tool display “TCC Brake Switch” as “open” with the
brake applied, then display “closed” with the brake pedal
released?
Go to Diagnostic
Aids
Go to Step 11
11Check the PCM for faulty or intermittent connections.
Was a problem found and corrected?
Go to Step 13Go to Step 12

LIGHTING SYSTEM8A–29
Light NameRated PowerNumber of
BulbsLens ColorRemarks
Headlight60w/55w2WhiteHalogen
FrontTurn signal light21w2Whitecombination
lightClearance light5w2Amber
FRT fog light55w2WhiteHalogen
Taillight/Stoplight5w/21w2Red
RearBumperTurn signal light21w2Ambercombination
lightTaillight/Stoplight5w/21w2RedBodyTurn signal light21w2Amber
Backup light21w2White
RR fog light21w2Red
Side turn signal light5w2Amber
License plate lightBumper5w2White
Body5W1White
High mount stoplight——RedLED
Map light5w2White
Dome light10w1White
Luggage room light8w1White
Courtesy light3.8w2White
A/C SW60mA1
RR defogger SW0.84w1
Mirror defogger SW0.84w1
FRT fog light SW0.7w1
RR fog light SW0.7w1
Cruise (Set)1.4w1Meter
Cruise (Main)1.4w1Meter
Check trans3w1Meter
Anti-theft3w1Warning box
Turn signal1.4w2Meter
Golw1.4w1Meter
Water sedimenter1.4w1Meter
Indicator/High beam1.4w1MeterWa rnin g
lightABS1.4w1Meter
Check engine1.4w1Meter
Low fuel1.4w1Meter
4WD1.4w1Meter
Oil Pressure1.4w1Meter
Brake system1.4w1Meter
Charge1.4w1Meter
Seat belt2w1Meter
A/T shift position0.91w7Meter
A/T oil temp3w1Meter

3
P-2
H-142
2
B-11
P-10P-7
PCM
(A4)
CONDENSER
FANEHCU STARTER
(B)
STARTER
RELAY
(3)
P-6
BODY ENGINE FRAME
BATTERY
STARTER
SWRELAY & FUSE BOX
CONDENSER
FAN
RELAY
FL-2 50A
KEY SWFL-3 30A
PCMFL-4 30A
CONDENSER
FANFL-6 40A
ABS FL-1 80A
MAIN 8.0
B/R
8.0
B30.0
B8.0
B30.0
B/R
3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y3.0
W/G3.0
B/R3.0
L/B2.0
W1.25
L/O
1.25
L3.0
W/G
3.0
W/B5.0
W
5.0
W
3.0
W/B
B-11IG1 ST IG2 ACC B1
7B-11
3B-11
5B-11
1
B2
OFF 4
B-11
P-5
P-1�＋
�−
X-191
X-19
D08RWC56.

E
HI
3.0
W
3.0
W/R 3.0
W/L
3.0
R/B
FG
CERAMIC
HEATERGLOW
PLUG
HEADLIGHT
LIGHTING
RELAY RELAY & FUSE BOX
3.0
W
1
X-1
4
3X-1
X-1
FL-3 40A
CERAMIC
HEATER
FL-5 50A
GLOW
3.0
W/G
EHCU
FL-6 40A
ABS
D08RWB45

E
HI
3.0
W
3.0
W/G 3.0
W/R
3.0
R/B
FG
GLOW
PLUGEHCU
HEADLIGHT
LIGHTING
RELAY RELAY & FUSE BOX
3.0
W
1
X-1
4
3X-1
X-1
FL-5 50A
GLOW
FL-6 40A
ABS
D08RWC53