1998 OPEL FRONTERA Measurements

RESTRAINT CONTROL SYSTEM 9J1–20
DTC 18 Passenger Deployment Loop Short To Ground
StepActionYe sNo
1Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check”
21. 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 data link connector. follow directions as
given in the scan tool operator’s MANUAL.
4. Ignition switch “ON.”
5. Read passenger bag sense LO.
Is passenger bag sense LO less than 1.5 volts?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Disconnect passenger air bag assembly yellow 2–pin
connector behind the glove box assembly.
3. Leave driver air bag assembly connected.
4. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter to passenger air bag assembly
harness connector.
5. Ignition switch “ON.”
Is DTC 18 current?
Go to Step 4
Ignition switch
“OFF”
Replace
passenger air
bag assembly
Go to Step 6
41. Ignition switch “OFF”.
2. Disconnect SRS driver / passenger load tool
3. Measure resistance on SDM harness connector from terminal
“15” to terminal “16” (ground).
Does 5–8840–0285–0 display “OL” (Infinite)?
Go to Step 5
Replace SRS
Harness
Go to Step 6
5Measure resistance on SDM harness connector from terminal
“16” to terminal “6” (ground).
Does 5–8840–0285–0 display “OL” (Infinite)?
Go to Chart A
Replace SRS
Harness.
Go to Step 6
61. Reconnect all components and ensure all component are
properly mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Go to the “SRS
Diagnostic
system Check”
Go to Step 6

RESTRAINT CONTROL SYSTEM 9J1–22
DTC 19 Passenger Deployment Loop Short To B+
CAUTION: When DTC 19 has been set, it is necessary to replace the SDM. Setting DTC 19 will also cause DTC
71 to set. When a scan tool “CLEAR CODES” command is issued and the malfunction is no longer present,
DTC 71 will remain current. Ensure that the short to voltage condition is repaired prior to installing a
replacement SDM to avoid damaging the SDM.
Step
ActionYe sNo
1Perform the “SRS Diagnostic System Check”
Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Repeat the “SRS
Diagnostic
System Check”
21. 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 data link connector. follow directions as
given in the scan tool operator’s manual.
4. Ignition switch “ON.”
5. Read passenger bag sense LO.
Is passenger bag sense LO more than 3.5 volts?
Go to Step 3Go to Chart A
31. Ignition switch “OFF”.
2. Disconnect passenger air bag assembly yellow 2–pin
connector behind the glove box assembly.
3. Leave driver air bag assembly connected.
4. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter to passenger air bag assembly
harness connector.
5. Ignition switch “ON.”
Is passenger bag sense LO more than 3.5 volts?
Go to Step 4
Ignition switch
“OFF”
Replace
passenger air
bag assembly
Go to Step 6
41. Ignition switch “OFF.”
2. Disconnect SDM.
3. Disconnect SRS driver / passenger load tool.
4. Measure resistance on SDM harness connector from terminal
“15” to terminal “12” (ignition).
Does 5–8840–0285–0 display “OL” (infinite)?
Go to Step 5
Replace SRS
harness
Go to Step 6.
5Measure resistance on SDM harness connector from terminal
“16” and terminal “12” (ignition).
Does 5–8840–0285–0 display “OL” (infinite)?
Go to Chart A
replace SRS
harness
Go to Step 6
61. Reconnect all components ensure all component are properly
mounted.
2. Ignition switch “ON”.
Is passenger bag senslo less than 3.5 volts?Ignition switch
“OFF”
Replace SDM
Go to Step 7
Go to Chart A
71. Reconnect all components ensure all component are properly
mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Repeat the “SRS
Diagnostic
System Check”
Go to Step 7

RESTRAINT CONTROL SYSTEM 9J1–24
Diagnostic Aids:
An intermittent condition is likely to be caused by a poor
connection at terminals “1” and “2” of the SRS coil 2–pin
connector at the base of the steering column, terminal “1”
and “2” of the driver air bag assembly 2–pin connector at
the top of the steering column, SDM terminals “3” and “4”
or a poor wire to terminal connection in IB05–YEL orIB06–YEL/BLK. The test for this diagnostic trouble code
is only run while the “AIR BAG” warning lamp is
performing the bulb check, unless DTC 17 or DTC 26 is
detected. When a scan tool “Clear Codes” command is
issued and the malfunction is still present, the DTC will not
reappear until the next ignition cycle.
DTC 21 Driver Deployment Loop Resistance High
StepActionYe sNo
1Perform the “SRS Diagnostic System Check”.
Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Repeat the “SRS
Diagnostic
System Check”
21. When measurements are requested in this chart use
5–8840–0285–0 DVM with correct terminal adapter from
5–8840–0385–0.
2. Use scan tool data list function, read and record the driver
deployment loop resistance.
Is driver resistance more than 3.7 ohms?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Disconnect SRS coil assembly yellow 2–pin connector located
at base of steering column is seated properly.
Is the 2–pin connector connected properly?
Go to Step 4
Seat SRS coil
assembly 2–pin
connector
properly
Go to Step 8
41. Disconnect and inspect the SRS coil assembly yellow 2–Pin
connector located base of steering column.
2. If ok, reconnect the SRS coil assembly yellow 2–pin
connector.
3. Ignition switch “ON.”
Is DTC 21 current?
Go to Step 5Go to Step 8
51. Ignition switch “OFF.”
2. Disconnect SRS coil and passenger air bag assembly, yellow
2–pin connector located at the base of steering column and
behind the glove box assembly.
3. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter to SRS coil and passenger air bag
assembly harness connectors.
4. Ignition switch “ON.”
Is DTC 21 current?
Go to Step 6Go to Step 7
61. Ignition switch “Off.”
2. There has been a increase in the total circuit resistance of the
driver deployment loop.
3. Use the high resolution ohmmeter mode of the DVM while
checking IB05–YEL and IB06–YEL/BLK, and SDM connector
terminal “3” and “4” to locate the root cause.
Was a fault found?
Replace SRS
harness
Go to Step 8
Go to Chart A

9J1–27
RESTRAINT CONTROL SYSTEM
malfunctioning shorting clip on the driver air bag
assembly or SRS coil assembly which would require
replacement of the component. The test for this
diagnostic trouble code is only run while the “AIR BAG”
warning lamp is performing the bulb check, unless DTC17 or DTC 26 is detected. When a scan tool “Clear
Codes” command is issued and the malfunction is still
present, the DTC will not reappear until the next ignition
cycle.
DTC 22 Driver Deployment Loop Resistance Low
StepActionYe sNo
1Perform the “SRS Diagnostic System Check.”
Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check”
21. When measurements are requested in this chart use
5–8840–0285–0 DVM with correct terminal adapter from
5–8840–0385–0.
2. Use scan tool data list function, read and record the driver
deployment loop resistance.
Is driver deployment loop resistance less than 1.7 OHMS?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Make sure the SRS coil assembly yellow 2–pin connector
located at the base of steering column is seated properly.
Is the 2–pin connector connected properly?
Go to Step 4
Seat driver air
bag assembly
2–pin connector
properly
Go to Step 8
41. Disconnect and inspect the SRS coil assembly yellow 2–pin
connector located base of steering column.
2. If ok, reconnect the SRS coil assembly yellow 2–pin
connector.
3. Ignition switch “ON.”
Is DTC 22 current?
Go to Step 5Go to Step 8
51. Ignition switch “OFF.”
2. Disconnect SRS coil and passenger air bag assembly, yellow
2–pin connector located at the base of steering column and
behind the glove box assembly.
3. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter to SRS coil and passenger air bag
assembly harness connectors.
4. Ignition switch “ON.”
Is DTC 22 current?
Go to Step 6Go to Step 7
61. Ignition switch “OFF.”
2. There has been a decrease in the total circuit resistance of the
driver deployment loop.
3. Use the high resolution ohmmeter mode of the DVM while
checking IB05–YEL and IB06–YEL/BLK, and SDM connector
terminal “3” and “4” to locate the root cause.
Was a fault found?
Replace SRS
harness
Go to Step 8
Go to Chart A

RESTRAINT CONTROL SYSTEM 9J1–30
DTC 24 Driver Deployment Loop Short To Ground
StepActionYe sNo
1Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check”
21. 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 data link connector. follow directions as
given in the scan tool operator’s manual.
4. Ignition switch “ON.”
5. Read driver bag sense LO.
Is driver bag sense LO less than 1.5 volts?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Disconnect SRS coil assembly yellow 2–pin connector located
at base of the steering column. leave passenger air bag
assembly connected.
3. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter to SRS coil assembly harness
connector.
4. ignition switch “ON.”
Is DTC 24 current?
Go to Step 4Go to Step 6
41. Ignition switch “OFF.”
2. Disconnect SDM.
3. Disconnect SRS driver / passenger load tool.
4. Measure resistance on SDM harness connector “3” to terminal
“6” (ground).
Does 5–8840–0285–0 display “OL” (infinite)?
Go to Step 5
Replace SRS
harness
Go to Step 7
5Measure resistance on SDM harness connector from terminal “4”
to terminal “6” (ground).
Does 5–8840–0285–0 display “OL” (infinite)?
Go to Chart A
Replace SRS
harness
Go to Step 7
61. Ignition switch “OFF.”
2. Disconnect SRS driver / passenger load tool 5–8840–2421–0
from SRS coil assembly harness connector.
3. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter 5–8840–0385–0 to driver air bag
assembly harness connector. located top of the steering
column 2–pin connector.
4. Reconnect SRS coil assembly harness connector as the base
of steering column.
5. Ignition switch “ON.”
Is DTC 24 current?
Ignition switch
“OFF”
Replace SRS coil
assembly
Go to Step 7Ignition switch
“OFF”
Replace driver air
bag assembly
Go to Step 7
71. Reconnect all components ensure all component are properly
mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Go to the “SRS
Diagnostic
System Check”
Go to Step 7

RESTRAINT CONTROL SYSTEM 9J1–32
DTC 25 Driver Deployment Loop Short To B+
CAUTION: When DTC 25 has been set, it is necessary to replace the SDM. Setting DTC 25 will also cause DTC
71 to set. When a scan tool “CLEAR CODES” command is issued and the malfunction is no longer present,
DTC 71 will remain current. Ensure that the short to B+ condition is repaired prior to installing a replacement
SDM to avoid damaging the SDM.
Step
ActionYe sNo
1Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check”
21. 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 data link connector. follow directions as
given in the scan tool operator’s manual.
4. Ignition switch “ON.”
5. Read driver bag sense LO .
Is driver bag sense LO more than 3.5 volts?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Disconnect SRS coil assembly yellow 2–pin connector at the
base of the steering column. Leave passenger air bag
assembly connected.
3. Connect SRS driver /passenger load tool 5–8840–2421–0 and
appropriate adapter to SRS coil assembly harness connector.
4. Ignition switch “ON.”
Is driver bag sense LO more than 3.5 volts?
Go to Step 4Go to Step 6
41. Ignition switch “OFF.”
2. Disconnect SDM.
3. Disconnect SRS driver /passenger load tool.
4. Measure resistance on SDM harness connector “3” to terminal
“12” (ignition).
Does 5–8840–0285–0 display “OL” (infinite)?
Go to Step 5
Replace SRS
harness
Go to Step 7
5Measure resistance on SDM harness connector from terminal “4”
to terminal “12” (ignition).
Does 5–8840–0285–0 display “OL” (infinite)?
Go to Chart A
Replace SRS
harness
Go to Step 7
61. Ignition switch “OFF”
2. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter 5–8840–0385–0 to driver air bag
assembly harness 2-pin connector located at top of the
steering column.
3. Reconnect SRS coil assembly harness connector as the base
of steering column.
4. Ignition switch “ON.”
Is driver bag sense LO more than 3.5 volts?
Ignition switch
“OFF”
Replace SRS coil
assembly
Go to Step 7Ignition switch
“OFF”
Replace driver air
bag assembly
Go to Step 7
71. Reconnect all components, ensure all component are properly
mounted.
2. Ignition switch “ON.”
Is driver bag senslo less than 3.5 volts?Ignition switch
“OFF”
Replace SDM
Go to Step 8
Go to Chart A
81. Reconnect all components ensure all component are properly
mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Go to the “SRS
Diagnostic
System Check”
Go to Step 8

RESTRAINT CONTROL SYSTEM 9J1–34
DTC 26 Driver Deployment Loop Open
StepActionYe sNo
1Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check”
21. When measurements are requested in this chart use
5–8840–0285–0 DVM with correct terminal adapter from
5–8840–0385–0.
2. Use scan tool data list function, read and record the driver
differential voltage.
Is driver VDIF more than 4.25 volts?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Make sure the SRS coil assembly yellow 2–pin connector
located at the base of steering column is seated properly.
Is the yellow 2–pin connector connected properly?
Go to Step 4
Seat driver air
bag assembly
2–pin connector
Go to Step 8
41. Disconnect and inspect the SRS coil assembly yellow 2–pin
connector located base of steering column.
2. If ok, reconnect the SRS coil assembly yellow 2–pin
connector.
3. Ignition switch “ON.”
Is DTC 26 current?
Go to Step 5Go to Step 8
51. Ignition switch “OFF”.
2. Disconnect SRS coil and passenger air bag assembly, yellow
2–pin connectors located at the base of steering column and
behind the glove box assembly.
3. Connect SRS driver/passenger load tool 5–8840–2421–0 and
appropriate adapter to SRS coil and passenger air bag
assembly harness connectors.
4. Ignition switch “ON.”
Is DTC 26 current?
Go to Step 6Go to Step 7
61. Ignition switch “OFF.”
2. There has been an open circuit in the driver inflator
deployment loop.
3. Use the high resolution ohmmeter mode of the DVM while
checking IB05–YEL and IB06–YEL/BLK, and SDM connector
terminal “3” and “4” to locate the root cause.
Was a fault found?
Replace SRS
harness
Go to Step 8
Go to Chart A
71. Ignition switch “OFF.”
2. Disconnect SRS driver / passenger load tool from SRS coil
assembly harness connector.
3. Connect SRS driver / passenger load tool 5–8840–2421–0 on
steering column 2–pin connector.
4. Reconnect SRS coil assembly harness connector at the base
of steering column.
5. Ignition switch “ON.”
Is DTC 26 current?
Ignition switch
“OFF”
Replace SRS coil
assembly
Go to Step 8Ignition switch
“OFF”
Replace driver air
bag assembly
Go to Step 8
81. Reconnect all components ensure all component are properly
mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Repeat the “SRS
Diagnostic
System Check”
Go to Step 8

RESTRAINT CONTROL SYSTEM 9J1–44
DTC 29 Passenger Pretensioner Loop Short To Ground
StepActionYe sNo
1Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check”
21. 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 data link connector. follow directions as
given in the scan tool operator’s MANUAL.
4. Ignition switch “ON.”
5. Read passenger sense LO.
Is passenger sense LO less than 1.5 volts?
Go to Step 3Go to Chart A
31. Ignition switch “OFF.”
2. Disconnect passenger pretensioner assembly yellow 2–pin
connector at the base of the passenger seat.
3. Leave driver pretensioner assembly connected.
4. Connect SRS driver / passenger load tool 5–8840–2421–0
and appropriate adapter to passenger pretensioner assembly
harness connector.
5. Ignition switch “ON.”
Is DTC 29 current?
Go to Step 4
Ignition switch
“OFF”
Replace
passenger
pretensioner
assembly
Go to Step 6
41. Ignition switch “OFF”.
2. Disconnect SRS driver / passenger load tool
3. Measure resistance on SDM harness connector from terminal
“9” to terminal “6” (ground).
Does 5–8840–0285–0 display “OL” (Infinite)?
Go to Step 5
Replace SRS
harness or repair
chassis harness
Go to Step 6
5Measure resistance on SDM harness connector from terminal
“10” to terminal “6” (ground).
Does 5–8840–0285–0 display “OL” (Infinite)?
Go to Chart A
Replace SRS
harness or repair
chassis harness
Go to Step 6
61. Reconnect all components and ensure all component are
properly mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Go to the “SRS
Diagnostic
system Check”
Go to Step 6