Opel Frontera UBS. Manual - part 2181

6E–297

ENGINE DRIVEABILITY AND EMISSIONS

Mass Air Flow (MAF) Sensor

Removal Procedure

1. Disconnect the negative battery cable.
2. Disconnect the electrical connector from the MAF

sensor.

TS23740

3. Loosen the clamps which secure the intake air duct

and the air cleaner to the MAF sensor.

4. Remove the intake air duct from the MAF sensor.
5. Remove the MAF sensor from the air cleaner.

TS23781

Installation Procedure

1. Install the MAF sensor on the air cleaner with the

clamp.

2. Install the intake air duct and the clamp on the MAF

sensor.

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3. Tighten the clamps to secure the MAF sensor to the

intake air duct and the air cleaner.

4. Connect the MAF electrical connector.
5. Connect the negative battery cable.

Manifold Absolute Pressure

(MAP) Sensor

Removal Procedure

1. Disconnect the negative battery cable.
2. Disconnect the electrical connector from the MAP

sensor.

055RW005

3. Remove the bolt securing the MAP sensor to the

mounting bracket on the common chamber.

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ENGINE DRIVEABILITY AND EMISSIONS

4. Remove the MAP sensor from the mounting bracket.

055RW002

Installation Procedure

1. Install the MAP sensor in the mounting bracket.

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2. Install the mounting bracket retaining bolt on the

common chamber.

3. Connect the MAP electrical connector.

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4. Connect the negative battery cable.

Malfunction Indicator Lamp

(MIL)

Removal and Installation Procedure

Refer to Warning light bulb, indicator light valve,
illumination light bulb, A/T indicator light bulb in Meter and
Gauge.

Powertrain Control Module

(PCM)

Service Precaution

NOTE: To prevent possible electrostatic discharge
damage to the PCM, do not touch the connector pins or
soldered components on the circuit board.

Electrostatic Discharge (ESD)
Damage

Electronic components used in the control systems are
often designed to carry very low voltage.  Electronic
components are susceptible to damage caused by
electrostatic discharge.  Less than 100 volts of static
electricity can cause damage to some electronic
components.  By comparison, it takes as much as 4,000
volts for a person to even feel the zap of a static
discharge.
There are several ways for a person to become statically
charged.  The most common methods of charging are by
friction and by induction.  An example of charging by
friction is a person sliding across a car seat.
Charging by induction occurs when a person with well
insulated shoes stands near a highly charged object and
momentarily touches ground.  Charges of the same
polarity are drained off leaving the person highly charged
with the opposite polarity.  Static charges can cause

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ENGINE DRIVEABILITY AND EMISSIONS

damage, therefore, it is important to use care when
handling and testing electronic components.

NOTE: To prevent possible Electrostatic Discharge
damage, follow these guidelines:

D

Do not touch the control module connector pins or
soldered components on the control module circuit
board.

D

Do not open the replacement part package until the
part is ready to be installed.

D

Before removing the part from the package, ground
the package to a known good ground on the vehicle.

D

If the part has been handled while sliding across the
seat, or while sitting down from a standing position, or
while walking a distance, touch a known good ground
before installing the part.

NOTE: To prevent internal PCM damage, the ignition
must be in the “OFF” position in order to disconnect or
reconnect power to the PCM (for example: battery cable,
PCM pigtail, PCM fuse, jumper cables, etc.).

IMPORTANT:

When replacing the production PCM

with a service PCM, it is important to transfer the
broadcast code and production PCM number to the
service PCM label.  This will allow positive identification of
PCM parts throughout the service life of the vehicle.  Do
not record this information on the metal PCM cover.

IMPORTANT:

The ignition should always be in the

“OFF” position in order to install or remove the PCM
connectors.

Service of the PCM should normally consist of either re-
placement of the PCM or EEPROM programming.  If the
diagnostic procedures call for the PCM to be replaced,
the PCM should be checked first to ensure it is the correct
part.  If it is, remove the faulty PCM and install the new
service PCM.
The service PCM EEPROM will not be programmed.
DTC P0601 indicates the check sum error.

Removal Procedure

1. Disconnect the negative battery cable.
2. Block the wheels.
3. Remove the front console assembly.

1. Remove the four screws.

TS23755

2. Remove the transfer shift lever knob by

unscrewing the knob.

3. Move the transmission gear selector out of the

park position.

4. Lift up sharply on the back edge of the assembly.

5. Disconnect the seat heater switch connectors (if

equipped).

6. Disconnect the POWER and WINTER switch

connectors.

7. Lift out the front console assembly.

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6E–300

ENGINE DRIVEABILITY AND EMISSIONS

4. Disconnect the red, white, and blue electrical

connectors at the PCM.

5. Remove the two screws in the front of the PCM.
6. Remove the one screw at the left rear of the PCM.
7. Pull the PCM straight out from the dashboard.

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Installation Procedure

1. Insert the PCM into the dashboard.

D

Line up the holes in front for the mounting screws.

2. Install the PCM with two screws in the front and one

screw at the left rear.

3. Plug the red, white, and blue connectors into the

appropriate sockets.

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EEPROM

General Description

The Electronically Erasable Programmable Read Only
Memory (EEPROM) is a permanent memory that is
physically soldered within the PCM.  The EEPROM
contains program and calibration information that the
PCM needs to control powertrain operation.

EEPROM Programming

1. Step-up – Ensure that the following conditions have

been met:

D

The battery is fully charged.

D

The ignition is “ON.”

D

The Vehicle Interface Module cable connection at
the DLC is secure.

2. Program the PCM using the latest software matching

the vehicle.  Refer to up-to-date Techline equipment
user’s instructions.

3. If the PCM fails to program, Refer to 

UBS 98 model

year Immobilizer Workshop Manual.

Functional Check

1. Perform the On-Board Diagnostic System Check.
2. Start the engine and run for one minute.
3. Scan for DTCs using the Tech 2.

Power Steering Pressure (PSP)

Switch

General Description

The Power Steering Pressure (PSP) switch closes when
the hydraulic pressure reaches 3920 

±

 690 kPa (570 

±

100 psi).  This causes the PCM to actuate the idle air
control valve in order to prevent the additional load from
slowing down the engine.  The switch opens when the
hydraulic pressure drops to 2970 

±

 560 kPa (430 

±

 80

psi).

Removal Procedure

1. Disconnect the PSP switch pigtail from the wiring

harness.

D

The pigtail is permanently attached to the switch.
Do not attempt to remove the wires from the
sensor.

D

Have a container ready to catch the power steering
fluid that leaks out of the line when the switch is
removed.