Opel Frontera UBS. Manual

SUPPLEMENTAL RESTRAINT SYSTEM

9J–30

Service Precautions for SRS
Component Service

CAUTION: When fasteners are removed, always
reinstall them at the same location from which they
were removed. If a fastener needs to be replaced, use
the correct part number fastener for that application.
If the correct part number fastener is not available, a
fastener of equal size and strength (or stronger) may
be used. fasteners that are not reused, and those
requiring thread locking compound will be called
out. The correct torque value must be used when
installing fasteners that require it. If the above
conditions are not followed, parts or system damage
could result.

WARNING: WHEN PERFORMING SERVICE ON OR
AROUND SRS COMPONENTS OR SRS WIRING,
FOLLOW THE PROCEDURES LISTED BELOW TO
TEMPORARILY DISABLE THE SRS. FAILURE TO
FOLLOW PROCEDURES COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY OR OTHERWISE UNNEEDED SRS REPAIRS.

The SDM in Driver–Passenger SRS can maintain
sufficient voltage to cause a deployment for up to 15
seconds after the ignition switch is turned “OFF,” the
battery is disconnected, or the fuse powering the SDM is
removed.
Many of the service procedures require removal of the
“C–21” fuse, and disconnection of the air bag assembly
from the deployment loop to avoid an accidental
deployment. If the air bag assembly is disconnected from
the deployment loop as noted in the “Disabling the SRS”
procedure that follows, service can begin immediately
without waiting for the 15 second time period to expire.

Disabling The SRS

Removal

Turn the ignition switch to “OFF” and turn the steering
wheel so that the vehicle’s wheels are pointing straight
ahead.

1. Remove SRS fuse “C–21” from left dash side lower

fuse block or disconnect battery.

2. Disconnect yellow 2–pin connector at the base of

steering column.

3. Remove glove box assembly; Refer to “Passenger air

bag assembly replacement” in this section.

4. Disconnect passenger air bag assembly yellow 2–pin

connector behind the glove box assembly.

CAUTION: With the “C–21” fuse removed and
ignition switch “ON,” the “AIR BAG” warning lamp
will be “ON.” This is normal operation and does not
indicate an SRS malfunction.

Enabling The SRS

Installation

Turn ignition switch to “LOCK” and remove key.

1. Connect yellow 2–pin connector passenger air bag

assembly.

2. Install glove box assembly. Refer to “Passenger Air

Bag Assembly Replacement” in this section.

3. Connect yellow 2–pin connector at the base of the

steering column.

4. Install “AIR BAG” fuse “C–21” to left dash side lower

fuse block or connect battery.

Turn ignition switch to “ON” and verify that the “AIR BAG”
warning lamp turn on 3.5 seconds and then turns “OFF.” If
it does not operate as described, perform the “SRS
Diagnostic System Check” in this section.

Handling / Installation / Diagnosis

1. Air bag assembly should not be subjected to

temperatures above 93

C (200

F).

2. Air bag assembly, and SDM should not be used if they

have been dropped from a height of 100 centimeters
(3.28 feet) or more.

3. When a SDM is replaced, it must be oriented with the

arrow on the SDM pointing toward the front of the
vehicle. It is very important for the SDM to be located
flat on the mounting surface, parallel to the vehicle
datum line. It is important that the SDM mounting
surface is free of any dirt or other foreign material.

4. Do not apply power to the SRS unless all components

are connected or a diagnostic chart requests it, as
this will set a diagnostic trouble code.

5. The “SRS Diagnostic System Check” must be the

starting point of any SRS diagnostics. The “SRS
Diagnostic System Check” will verify proper “AIR
BAG” warning lamp operation and will lead you to the
correct chart to diagnose any SRS malfunctions.
Bypassing these procedures may result in extended
diagnostic time, incorrect diagnosis, and incorrect
parts replacements.

Inspections Required After An Accident

CAUTION: Certain SRS components must be
replaced after a frontal crash involving air bag
deployment.
In all types of accidents regardless of “Air Bag”
deployment, visually inspect all of the following
components and replace as required:
— Driver air bag assembly
— Passenger air bag assembly
— Driver pretensioner assembly
— Passenger pretensioner assembly
— Steering wheel
— SRS coil assembly
— Steering column
— Knee bolster and instrument panel mounting

attachments

— Driver seat and belt
— Passenger seat and belt
— SDM

SDM always should be checked according to “SDM
Replacement Guidelines.”

SUPPLEMENTAL RESTRAINT SYSTEM

9J–31

CAUTION: Refer to “SDM Replacement Guidelines”
below for important information on SDM
replacement in both deployment and
non–deployment crashes.
Inspect SRS coil assembly wiring and steering wheel for
any sign of scorching, melting, or damage due to
excessive heat. If coil assembly wire or steering wheel is
damaged, replace them. The steering column and wheel
must be dimensionally checked to determine if they are
damaged. Refer to steering wheel of in this manual.
Never use SRS parts from another vehicle. This does not
include remanufactured parts purchased from an
authorized Isuzu Retailer; they may be used for SRS
repairs.
Do not attempt to repair the SDM, the SRS harness, the
SRS coil assembly, the air bag assembly, the steering
wheel, or the steering column. Service of these items is
replacement only. Verify replacement part numbers.

CAUTION: Proper operation of the SDM and
supplemental restraint system (SRS) requires that
any repairs to the vehicle structure return it to its
original production configuration.

SRS Connectors

CAUTION: The special yellow color connectors are
used for supplemental restraint system air bag circuit.
When removing the oable harnese, do not pull the cables
otherwile, cable disconnection may occur. When connect
the SRS connector, insert the connector completely.
Imperfect locking may cause malfunction of SRS circuit.

Removal

To remove the connector, hold the cover insulator (1) and
pull it. The cover insulator slides and lock will be released.
Do not hold the socket insulator (2).

827RW028

Opel Frontera UBS. Manual - part 2919