Opel Frontera UBS. Manual - part 1814

 

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Opel Frontera UBS. Manual - part 1814

 

 

RESTRAINT CONTROL SYSTEM

9J1–36

DTC 51  Air Bag Deployment Event Commanded 

WARNING: DURING SERVICE PROCEDURES. BE VERY CAREFUL WHEN HANDLING A SENSING AND
DIAGNOSTIC MODULE (SDM). NEVER STRIKE OR JAR THE SDM.  NEVER POWER UP THE SRS WHEN THE
SDM IS NOT RIGIDLY ATTACHED TO THE VEHICLE. ALL SDM AND MOUNTING BRACKET FASTENERS MUST
BE CAREFULLY TORQUED AND THE ARROW MUST BE POINTING TOWARD THE FRONT OF THE VEHICLE
TO ENSURE PROPER OPERATION OF THE SRS. THE SDM COULD BE ACTIVATED WHEN POWERED WHILE
NOT RIGIDLY ATTACHED TO THE VEHICLE WHICH COULD CAUSE DEPLOYMENT AND RESULT IN
PERSONAL INJURY.

Step

Action

Yes

No

1

Was the “SRS Diagnostic System Check” performed?

Go to Step 2

Go to the “SRS

Diagnostic

System Check”

2

Ignition switch “OFF.”

Have air bag assemblies deployed?

Replace

components and

perform

inspections as

directed in

“repairs and

inspections

required after an

accident” in this

section

Clear diagnostic

trouble codes

Repeat “SRS

Diagnostic

System Check”

Go to Step 3

3

Inspect front of vehicle and undercarriage for sings of impact.

Were signs of impact found?

Replace

components and

perform

inspections as

directed in

“Repairs and

Inspections

Required After An

Accident” in this

section

Clear diagnostic

trouble codes

Repeat “SRS

Diagnostic

System Check”

Ignition switch

“OFF”

Replace SDM

Reconnect all

SRS system

components,

ensure all

components are

properly mounted

Repeat “SRS

Diagnostic

System Check”

9J1–37

RESTRAINT CONTROL SYSTEM

DTC 53  Deployment Commanded With Deployment Loop Fault Or Energy
Reserves Out Of Range

D09RW014

Circuit Description:

The SDM contains a sensing drive which converts vehicle
velocity changes to an electrical signal.  The electrical
signal generated is processed by the SDM and then
compared to a value stored in memory.  When the
generated signal exceeds the stored value, the SDM will
cause current to flow through the air bag assembly
deploying the air bags.  DTC 53 is set accompanying with
DTC 51 when a deployment occurs while an air bag
assembly circuit fault is present that could possible result
in a no deployment situation in one or both air bag
assemblies.

DTC Will Set When:

The SDM detects a frontal crash, up to 30 degrees off the
centerline of the vehicle, of sufficient force to warrant
deployment of the air bags and an inflator circuit fault is
present..

Action Taken:

SDM turns “ON” the “AIR BAG” warning lamp records
“Crash Data”, and sets a diagnostic trouble code.

DTC Will Clear When:

The SDM is replaced.  If DTC 53 is set, one or more DTCs
will be set in addition to DTC 53.  Malfunction(s) setting
DTC(s) (other than DTC 71) must be repaired so that
DTC(s) will not be set when a new SDM is installed.

DTC Chart Test Description:

Number(s) below refer to step number(s) on the
diagnostic chart:
2. If air bag assembly have not deployed, DTC 53 may

have falsely set.

3. If DTC 53 has set with no signs of frontal impact, the

diagnostic trouble code has falsely set.

RESTRAINT CONTROL SYSTEM

9J1–38

DTC 53 Deployment Commanded WITH Deployment Loop Fault Or Energy Reserves Out
Of Range 

WARNING: DURING SERVICE PROCEDURES. BE VERY CAREFUL WHEN HANDLING A SENSING AND
DIAGNOSTIC MODULE (SDM). NEVER STRIKE OR JAR THE SDM.  NEVER POWER UP THE SRS WHEN THE
SDM IS NOT RIGIDLY ATTACHED TO THE VEHICLE. ALL SDM AND MOUNTING BRACKET FASTENERS MUST
BE CAREFULLY TORQUED AND THE ARROW MUST BE POINTING TOWARD THE FRONT OF THE VEHICLE
TO ENSURE PROPER OPERATION OF THE SRS. THE SDM COULD BE ACTIVATED WHEN POWERED WHILE
NOT RIGIDLY ATTACHED TO THE VEHICLE WHICH COULD CAUSE DEPLOYMENT AND RESULT IN
PERSONAL INJURY.

Step

Action

Yes

No

1

Was the “SRS Diagnostic System Check” performed?

Go to Step 2

Go to the “SRS

Diagnostic

System Check” 

2

Ignition switch “OFF.”

Have air bag assembles deployed?

Replace

components and

perform

inspections as

directed in

“Repairs And

Inspections

Required After An

Accident” in this

section

Clear diagnostic

trouble codes

Repeat the “SRS

Diagnostic

System Check”

Go to Step 3

3

Inspect front of vehicle and undercarriage for signs of impact.

Were signs of impact found?

Replace

components and

perform

inspections as

directed in

“Repairs And

Inspections

Required After An

Accident” in this

section

Clear diagnostic

trouble codes

Repeat “SRS

Diagnostic

System Check”

Ignition switch

“OFF”

Replace SDM

Reconnect all

SRS system

components,

ensure all

components are

properly mounted

Repeat the “SRS

Diagnostic

System Check”

9J1–39

RESTRAINT CONTROL SYSTEM

DTC 61  Warning Lamp Circuit Failure

D09RW014

Circuit Description:

When the ignition switch is turned “ON”, battery voltage is
applied to the “AIR BAG” warning lamp and to the “Ignition
1” input terminal “12”.  The SDM responds by turning on
the “AIR BAG” warning lamp 3.5 seconds.  The SDM
monitors the lamp driver output by comparing the output
state at “SRS Warning Lamp” terminal “7” to the
microprocessor commanded state.  When “Ignition 1” is in
the specified value, and the output state does not match
the commanded state of the lamp driver for 500
milliseconds, DTC 61 is set.

DTC Will Set When:

“Ignition 1” voltage is in the specified value and the output
state at the “SRS Warning Lamp” terminal does not match

the commanded state of the lamp driver for 500
milliseconds.  This test is run every 100 milliseconds
during “Continuous Monitoring” tests and once per each
ignition cycle at the beginning.

Action Taken:

SDM attempts to turn “ON” the “AIR BAG” warning lamp
and sets a diagnostic trouble code.

DTC Will Clear When:

The ignition switch is turned “OFF.”

Diagnostic Aids:

Refer to Charts B and C to diagnose warning lamp circuit
malfunctions.

 

 

 

 

 

 

 

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