Opel Frontera UBS. Manual - part 1807

 

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Opel Frontera UBS. Manual - part 1807

 

 

RESTRAINT CONTROL SYSTEM

9J1–8

Chart B  “AIR BAG” Warning Lamp Comes “ON” Steady

D09RW014

Circuit Description:

When the ignition switch is first turned “ON”, “Ignition 1”
voltage is applied from the “C–10” fuse to “AIR BAG”,
warning lamp which is connected to “SRS Warning
Lamp”, terminal “7”.  The “C–21” fuses apply system
voltage to the “Ignition 1” inputs, terminals “12”.  The SDM
responds by turning on the “AIR BAG” warning lamp 3.5
seconds.  If “Ignition 1” is less than 9 volts, the “AIR BAG”
warning lamp will come “ON” solid with no DTCs set.

Chart Test Description: 

Number(s) below refer to step number(s) on the
diagnostic chart.
2. This test checks for an open in the “Ignition 1” circuit

to the SDM.

3. This test checks for the voltage of “IGNITION 1”.
4. This test determines whether the malfunction is a

short to ground in IB04–WHT/RED.

9J1–9

RESTRAINT CONTROL SYSTEM

Chart B “AIR BAG” warning lamp comes “ON” Steady 

Step

Action

Yes

No

1

1. When measurements are requested in this chart use

5–8840–0285–0 DVM with correct terminal adapter from
5–8840–0385–0.

2. Ignition switch “OFF.”
3. Connect scan tool to data link connector, follow directions as

given in the scan tool instruction MANUAL.

4. Ignition switch “ON.”
5. Request SRS diagnostic trouble code display.

Dose scan tool indicate “No Data Received”?

Go to Step 2

Go to Step 3

2

1. Ignition switch “OFF”.
2. Inspect SDM harness connector connection to SDM. 

Is it securely connected to the SDM?

Ignition switch

“OFF” 

Replace SDM

Go to Step 5

Connect SDM

securely to

de–activate

shorting clip in

SDM harness

connector

Go to Step 5

3

Using scan tool,  request SRS data list.

Is “ignition” less than 9 volts?

Go to Step 4

Ignition switch

“OFF”

Replace SDM 

Go to Step 5

4

1. Ignition switch “OFF.”
2. Disconnect SRS coil and passenger air bag assemblies.

yellow 2–pin connector located at base of steering column and
behind the glove box assembly.
Disconnect SDM.

3. Disconnect the connector of “SRS Warning Lamp” of

instrument cluster.

4. Measure resistance from SDM harness connector terminal “7”

to ground “6”.

Does 5–8840–0285–0 display “OL” (Infinite)?

Go to Chart A

Replace SRS

harness

Go to Step 5

5

Reconnect all SRS components, ensure all components are
properly mounted.

Was this step finished?

Repeat the “SRS

Diagnostic

System Check”

Go to Step 5

RESTRAINT CONTROL SYSTEM

9J1–10

Chart C  “AIR BAG” Warning Lamp Does Not Come “ON” Steady

D09RW014

Circuit Description:

When the ignition switch is first turned “ON”, “Ignition 1”
voltage is applied from the “C–10” fuse to the “AIR BAG”
warning lamp which is connected to “SRS Warning
Lamp”, terminal “7”.  The “C–21” fuse apply system
voltage to the “Ignition 1” inputs, terminals “12”.  The SDM
responds by turning on the “AIR BAG” warning lamp 3.5
seconds.  If “Ignition 1” is more than 16 volts, the “AIR
BAG” warning lamp will be still “OFF” solid with no DTCs
set.

Chart Test description:

Number(s) below refer to step number(s) on the
diagnostic chart:
1. This test decides whether power is available to SDM

warning lamp power feed circuit.

2. This test determines whether the voltage is present

in the warning lamp circuit.

3. This test determines if the malfunction is in the

instrument cluster.

4. This test checks for open in the warning lamp

circuitry.

5. This test isolates the IB04–WHT/RED circuit and

checks for a short in the IB04–WHT/RED circuit to
B+.

8. This test checks for a short from the SDM warning

lamppower feed circuit to ground.

9. This test determines whether the short to ground is

due to a short in the wiring.

9J1–11

RESTRAINT CONTROL SYSTEM

 Chart C “AIR BAG” Warning Lamp Does Not Come “ON” Steady 

Step

Action

Yes

No

1

1. When measurements are requested in this chart,use

5–8840–0285–0 DVM with correct terminal adapter from
5–8840–0385–0.  

2. Ignition switch “OFF.”
3. Remove and inspect “C–10” fuse (meter) to the “AIR BAG”

warning lamp.

Is fuse good?

Go to Step 2

Go to Step 7

2

1. Ignition switch “OFF.”
2. Disconnect SRS coil and passenger air bag assemblies.

Yellow 2–pin connector located at base of steering column and
behind the glove box assembly.

3. Disconnect SDM.
4. Ignition switch “ON.”
5. Measure voltage on SDM harness connector from terminal “7”

to terminal “6” (ground).

Is system voltage present on terminal “7”?

Go to Step 4

Go to Step 3

3

1. Ignition switch “OFF.”
2. Remove instrument meter cluster.
3. Check for proper connection to instrument cluster at

IB04–WHT/RED terminal.

4. If ok, then remove and inspect “AIR BAG” bulb.

Is bulb good?

Go to Step 5

Replace bulb

Go to Step 6

4

1. Ignition switch “OFF.”
2. Disconnect instrument meter cluster harness connector.
3. Ignition switch “ON.”
4. Measure voltage on SDM harness connector from terminal “7”

to terminal “6” (GROUND).

Is voltage 1 volt or less?

Go to Chart A

Replace SRS

harness

Go to Step 6

5

1. Install bulb.
2. Measure resistance from instrument meter cluster harness

connector IB04–WHT/RED terminal to SDM harness
connector terminal “7”.

Is resistance 5.0 ohms or less?

Service

instrument meter

cluster

Install instrument

meter cluster 

Go to Step 6

Replace SRS

harness

Go to Step 6

6

Reconnect all SRS components, ensure all components are
properly mounted.

Was this step finished?

Repeat the “SRS

Diagnostic

System Check”

Go to Step 6

7

Perform chart C.

Was this step finished?

Go to Step 8

Go to Step 1 

8

1. Replace “C–10” fuse.
2. Ignition switch “ON” wait 10 Seconds then ignition switch “Off.”
3. Remove and inspect “C–10” fuse.

Is fuse good?

Install “C–10”

fuse

Go to Step 10

Go to Step 9

 

 

 

 

 

 

 

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