1998 OPEL FRONTERA ignition

RESTRAINT CONTROL SYSTEM 9J1–16
check, unless DTC 17 or DTC 26 is detected. When a
scan tool “Clear Codes” command is issued and themalfunction is still present, the DTC will not reappear until
the next ignition cycle.
DTC 16 Passenger Deployment loop Resistance Low
StepActionYe sNo
1Was 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. Using scan tool data list function, read and record the
passenger deployment loop resistance.
Is passenger resist. less than 1.4 ohms?
Go to Step 3Go to Chart A
31. Ignition switch “Off.”
2. Make sure the passenger air bag assembly yellow 2–pin
connector located behind the glove box assembly is seated
properly.
Is the yellow 2–pin connector connected properly?
Go to Step 4
Seat passenger
air bag assembly
yellow 2–pin
connector
properly
Go to Step 7
41. Disconnect and inspect the passenger air bag assembly
yellow 2–pin connector located behind the glove box
assembly.
2. If ok, reconnect the passenger air bag assembly 2–pin
connector.
3. Ignition switch “ON.”
Is DTC 16 Current?
Go to Step 5Go to Step 7
51. Ignition switch “Off.”
2. Disconnect SRS coil and passenger air bag assembly, yellow
2–pin connector located at the base of the steering column and
behind the glove box assembly.
3. Connect 5–8840–2421–0 SRS driver/passenger load tool and
appropriate adapters to SRS coil and passenger air bag
assembly harness connectors.
4. Ignition switch “ON.”
Is DTC 16 current?
Go to Step 6
Ignition switch
“Off”
Replace the
passenger air
bag assembly
Go to Step 7
61. Ignition switch “Off.”
2. There has been a decrease in the total circuit resistance of the
passenger inflator deployment loop.
3. Use the high resolution ohmmeter mode of the DVM while
checking IB07–YEL/GRN and IB08–YEL/RED, and SDM
connector terminal “15” and “16” to locate the root cause.
Was a fault found?
Replace SRS
harness
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

9J1–17
RESTRAINT CONTROL SYSTEM
DTC 17 Passenger Deployment Loop Open
D09RW014
Circuit Description:
When the ignition switch is turned “ON”, the SDM will
perform tests to diagnose critical malfunctions within
itself. Upon passing these tests, “Ignition 1”, and
deployment loop voltages are measured to ensure they
are within their respective normal voltage ranges. During
“Continuous Monitoring” diagnostics, a fixed amount of
current is flowing in the deployment loop. This produces
proportional voltage drops in the loop. By monitoring the
voltage difference between “Passenger Bag High” and
“Passenger Bag Low”, the SDM calculates the combined
resistance of the passenger air bag assembly, harness
wiring IB07–YEL/GRN AND IB08–YEL/RED, and
connector terminal contact.
DTC Will Set When:
The voltage difference between “Passenger Bag High”
terminal “15” and “Passenger Bag Low” terminal “16” is
above or equal to a specified value for 500 milliseconds
during “Continuous Monitoring”.
Action Taken:
SDM turns “ON” the “AIR BAG” warning lamp and sets a
diagnostic trouble code.
DTC Will Clear When:
The voltage difference between “Passenger Bag High”
terminal “15” and “Passenger Bag Low” terminal “16” is
below a specified value for 500 milliseconds during
“Continuous Monitoring”.
DTC Chart Test Description:
Number(s) below refer to step number(s) on the
diagnostic chart:
2. This test determines whether the malfunction is in
the SDM.
3. This test verifies proper connection of the yellow
2–pin connector.
4. This test cheeks for proper contact and/or corrosion
of the shorting clip in the yellow 2–pin connector
terminals.
5. The test checks for a malfunctioning passenger air
bag assembly.
6. This test determines whether the open in the wiring.
Diagnostic Aids:
An intermittent condition is likely to be caused by a poor
connection at the passenger air bag assembly harness
connector terminals“2” and “3”, SDM terminals “15” and
“16”, or an open in IB07–YEL/GRN and IB08–YEL/RED.

RESTRAINT CONTROL SYSTEM 9J1–18
DTC 17 Passenger 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. Using scan tool data list function, read and record the
passenger differential voltage.
Is passenger VDIF 0.425 volts or more?
Go to Step 3Go to Chart A
31. Ignition switch “OFF”.
2. Make sure the passenger air bag assembly yellow 2–pin
connector located behind the glove box assembly is seated
properly.
Is the yellow 2–pin connector connected properly?
Go to Step 4
Seat passenger
air bag assembly
yellow 2–pin
connector
properly
Go to Step 7
41. Disconnect and inspect the passenger air bag assembly
yellow 2–pin connector located behind the glove box
assembly.
2. If ok, reconnect the passenger air bag assembly 2–pin
connector.
3. Ignition switch “ON”.
Is DTC 17 current?
Go to Step 5Go to Step 7
51. Ignition switch “Off.”
2. Disconnect SRS coil and passenger air bag assembly, yellow
2–pin connector located at the base of the steering column and
behind the glove box assembly.
3. Connect 5–8840–2421–0 SRS driver / passenger load tool
and appropriate adapters to SRS coil and passenger air bag
assembly harness connectors.
4. Ignition switch “ON.”
Is DTC 17 current?
Go to Step 6
Ignition switch
“Off”
Replace the
passenger air
bag assembly
Go to Step 7
61. Ignition switch “Off.”
2. There has been an open circuit resistance in the passenger
deployment loop.
3. Use the high resolution ohmmeter mode of the DVM while
checking IB07–YEL/GRN and IB08–YEL/RED, and SDM
connector terminal “15” and “16” to locate the root cause.
Was a fault found?
Replace SRS
harness
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?
Go to the “SRS
Diagnostic
System Check”
Go to Step 7

9J1–19
RESTRAINT CONTROL SYSTEM
DTC 18 Passenger Deployment Loop Short To Ground
D09RW014
Circuit Description:
When the ignition switch is turned “ON”, the SDM will
perform tests to diagnose critical malfunctions within
itself. Upon passing these tests, “Ignition 1”, and
deployment loop voltages are measured to ensure they
are within their respective normal voltage ranges.
The SDM monitors the voltages at “Driver Bag Low”
terminal “4” and “Passenger Bag Low” terminal “16” to
detect short to ground in the air bag assembly circuits.
DTC Will Set When:
Neither of the two air bag assemblies is open.
“Ignition 1” is within the normal operating voltage range.
Once these conditions are met and the voltage at
“Passenger Bag Low” is below a specified value, DTC 18
will set. This test is run once each ignition cycle and
“Continuous Monitoring”.
Action Taken:
SDM turns “ON” the “AIR BAG” warning lamp and sets a
diagnostic trouble code.
DTC Will Clear When:
This malfunction is no longer occurring and the ignition
switch is turned “OFF”.
DTC Chart Test Description:
Number(s) below refer to circled number(s) on the
diagnostic chart.
2. This test determines whether the SDM is
malfunctioning.
3. This test isolates the malfunction to one side of the
passenger air bag assembly yellow 2–pin connector
behind glove box assembly.
4. This test determines whether the malfunction is in
IB07–YEL/GRN.
5. This test determines whether the malfunction is in
IB08–YEL/RED.
Diagnostic Aids:
An intermittent condition is likely to be caused by a short
to ground in the passenger air bag assembly circuit.
Inspect IB07–YEL/GRN and IB08–YEL/RED carefully for
cutting or chafing. If the wiring pigtail of the passenger air
bag assembly is damaged, the component must be
replaced.

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

9J1–21
RESTRAINT CONTROL SYSTEM
DTC 19 Passenger Deployment Loop Short To B+
D09RW014
Circuit Description:
When the ignition switch is turned “ON”, the SDM will
perform tests to diagnose critical malfunctions within
itself. Upon passing these tests, “Ignition 1”, and
deployment loop voltages are measured to ensure they
are within their respective normal voltage ranges.
The SDM monitors the voltages at “Driver Bag Low”
terminal “4” and “Passenger Bag Low” terminal “16” to
detect short to B+ in the air bag assembly circuits.
DTC Will Set When:
“Ignition 1” is within the normal operating voltage range.
Once these conditions are met and the voltage at
“Passenger Bag Low” is above a specified value, DTC 19
will set. This test is run once each ignition cycle and
“Continuous Monitoring”.
Action Taken:
SDM turns “ON” the “AIR BAG” warning lamp and sets
DTC 19 and also DTC 71.
DTC Will Clear When:
The SDM is replaced.
DTC Chart Test Description:
Number(s) below refer to step number(s) on the
diagnostic chart:
2. This test determines whether the malfunction is in
the SDM.
3. This test isolates the malfunction to one side of the
passenger air bag assembly yellow 2–pin connector
behind glove box assembly.
4. This test determines whether the malfunction is in
IB07–YEL/GRN.
5. This test determines whether the malfunction is in
IB08–YEL/RED.
Diagnostic Aids:
An intermittent condition is likely to be caused by a short
to B+ in the passenger air bag assembly circuit. Inspect
IB07–YEL/GRN and IB08–YEL/RED carefully for cutting
or chafing. If the wiring pigtail of the passenger air bag
assembly is damaged, the component must be replaced.
A careful inspection of IB07–YEL/GRN and
IB08–YEL/RED, including the passenger air bag
assembly pigtail is essential to ensure that the
replacement SDM will not be damaged.

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

9J1–23
RESTRAINT CONTROL SYSTEM
DTC 21 Driver Deployment Loop Resistance High
D09RW014
Circuit Description:
When the ignition switch is turned “ON”, the SDM will
perform tests to diagnose critical malfunctions within
itself. Upon passing these tests, “Ignition 1”, and
deployment loop voltages are measured to ensure they
are within their respective normal voltage ranges.
The SDM then proceeds with the “Resistance
Measurement Test” “Driver Bag Low” terminal “4” is
grounded through a current sink and the driver current
source connected to “Driver Bag High” terminal “3” allows
a known amount of current to flow. By monitoring the
voltage difference between “Driver Bag High” and “Driver
Bag Low”, the SDM calculates the combined resistance
of the driver air bag assembly, SRS coil assembly,
harness wiring IB05–YEL and IB06–YEL/BLK, and
connector terminal contact.
DTC Will Set When:
The combined resistance of the driver air bag assembly,
SRS Coil assembly, harness wiring IB05–YEL and
IB06–YEL/BLK, and connector terminal contact is above
a specified value. This test run once each ignition cycle
during the “Resistance Measurement Test” when:
1. No “higher priority faults” are detected during
“Turn–ON”
2. “Ignition 1” voltage is in the specified value.
Action Taken:
SDM turns “ON” the “AIR BAG” warning lamp and sets
DTC 21.
DTC Will Clear When:
The ignition switch is turned “OFF”.
DTC Chart Test Description:
Number(s) below refer to step number(s) on the
diagnostic chart:
2. This test determines whether the malfunction is in
the SDM.
3. This test verifies proper connection of the yellow
2–pin connector at the base of the steering column.
4. This test checks for proper contact and/or corrosion
of the 2–pin connector terminals at the base of
steering column.
5. This test isolate the malfunction to one side of the
SRS coil assembly yellow 2–pin connector located
at the base of the steering column.
6. This test determines whether the malfunction is due
to high resistance in the wiring.
7. This test determines whether the malfunction is in
the SRS coil assembly or the driver air bag
assembly.