1998 OPEL FRONTERA wiring

8H–2SECURITY AND LOCKS
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
Front Door Lock Assembly
Front Door Lock Assembly and Associated Parts
632RS003
Legend
(1) Door Trim Panel
(2) Waterproof Sheet
(3) To Outside Handle(4) Rear Guide Rail
(5) Door Lock Assembly
(6) Door Lock Switch Connector (W/Power Door
Lock)
Removal
1. Disconnect the battery ground cable.
2. Remove the door trim panel.3. Remove the waterproof sheet.
Refer to the Window Regulator removal procedure in
Body Structure section.

SUN ROOF/CONVERTIBLE TOP8I–1
BODY AND ACCESSORIES
SUN ROOF/CONVERTIBLE TOP
CONTENTS
Service Precaution 8I–1. . . . . . . . . . . . . . . . . . . . . .
Sun Roof Glass 8I–2. . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Glass and Associated Parts 8I–2. . . .
Removal 8I–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Deflector 8I–4. . . . . . . . . . . . . . . . . . . . . .
Removal 8I–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sunshade 8I–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 8I–4. . . . . . . . . . . . . . . . . . . .
Removal 8I–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Frame Complete Assembly 8I–6. . . . . .
Sun Roof Frame Complete Assembly and
Associated Parts 8I–6. . . . . . . . . . . . . . . . . . . . . .
Removal 8I–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 8I–7. . . . . . . . . . . . . . . . . . . .
Disassembly 8I–7. . . . . . . . . . . . . . . . . . . . . . . . . . Reassembly 8I–8. . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Drain Hose (Front Side) 8I–9. . . . . . . . .
Sun Roof Drain Hose (Front Side) and
Associated Parts 8I–9. . . . . . . . . . . . . . . . . . . . . .
Removal 8I–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Drain Hose (Rear Side) 8I–10. . . . . . . . .
Sun Roof Drain Hose (Rear Side) and
Associated Parts 8I–10. . . . . . . . . . . . . . . . . . . . . .
Removal 8I–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Switch 8I–11. . . . . . . . . . . . . . . . . . . . . . . .
General Description 8I–11. . . . . . . . . . . . . . . . . . . . . .
Removal 8I–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Roof Motor 8I–12. . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8I–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8I–12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 8I–12. . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

8J–2EXTERIOR/INTERIOR TRIM
Quarter Flipper Glass Assembly (SꞏWꞏB) 8J–33. . .
Quarter Flipper Glass Assembly and
Associated Parts 8J–33. . . . . . . . . . . . . . . . . . . . . .
Removal 8J–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8J–33. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Trim Panel (LH) 8J–34. . . . . . . . . . . . . . . . .
Tailgate Trim Panel (LH) and Associated
Parts 8J–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8J–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8J–35. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Trim Panel (RH) 8J–36. . . . . . . . . . . . . . . . .
Parts Location 8J–36. . . . . . . . . . . . . . . . . . . . . . . .
Removal 8J–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8J–36. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luggage Floor Box 8J–37. . . . . . . . . . . . . . . . . . . . . .
Luggage Floor Box and Associated Parts 8J–37.
Remove 8J–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8J–37. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rope Hook Set 8J–37. . . . . . . . . . . . . . . . . . . . . . . . . Rope Hook Set and Associated Parts 8J–37. . . .
Removal 8J–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8J–37. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Door Mirror System 8J–38. . . . . . . . . . . . . . .
General Description 8J–38. . . . . . . . . . . . . . . . . . . . . .
Door Mirror Switch Assembly (Control Switch, Fold-
ing Switch and Defogger Switch) Removal 8J–38
Installation 8J–38. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Door Mirror 8J–38. . . . . . . . . . . . . . . . . . . . . . .
General Description 8J–38. . . . . . . . . . . . . . . . . . . .
Removal and Installation 8J–38. . . . . . . . . . . . . . .
Power Window System 8J–39. . . . . . . . . . . . . . . . . .
General Description 8J–39. . . . . . . . . . . . . . . . . . . . . .
Power Window Switch Removal and
Installation 8J–39. . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window Motor Removal and
Installation 8J–40. . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 8J–41. . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

SEAT BELT SYSTEM 9A–1
RESTRAINTS
CONTENTS
SEAT BELT SYSTEM
CONTENTS
Seat Belt System . . . . . . . . . . . . . . . . . . . . . . 9A–1
Supplemental Restraint System (SRS) . . . . . 9J–1Restraint Control System . . . . . . . . . . . . . . . . 9J1–1
Service Precaution . . . . . . . . . . . . . . . . . . . . . 9A–1
Seat Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–2
Front Seat Belt and Associated Parts
(Long Wheel Base) . . . . . . . . . . . . . . . . . . 9A–2
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–2
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–3
Front Seat Belt and Associated Parts
(Short Wheel Base) . . . . . . . . . . . . . . . . . . 9A–4
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–4
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–5
Rear Seat Belt and Associated Parts
(Long Wheel Base) . . . . . . . . . . . . . . . . . . 9A–6
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–6
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–7
Rear Seat Belt and Associated Parts
(Short Wheel Base) . . . . . . . . . . . . . . . . . . 9A–8
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–8
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–9
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–9
Third Seat Belt and Associated Parts
(Long Wheel Base) . . . . . . . . . . . . . . . . . . 9A–10
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–10
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–11
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–11Front Seat Buckle Assembly . . . . . . . . . . . . . 9A–12
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–12
Front Seat Buckle Assembly (W/Pretensioner) 9A–12
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–12
Rear Center Seat Belt Buckle Assembly . . . 9A–13
Rear Center Seat Belt Buckle Assembly
and Associated Parts . . . . . . . . . . . . . . . . . 9A–13
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–13
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–13
Third Seat Belt Buckle and Lock Assembly . 9A–14
Third Seat Belt Buckle and Lock Assembly
and Associated Parts . . . . . . . . . . . . . . . . . 9A–14
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–14
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–14
Rear Seat Lock Assembly . . . . . . . . . . . . . . . 9A–15
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–15
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–15
Rear Seat Lock Assembly (Bench Type) . . . 9A–15
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–15
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–15
Rear Seat Strikers . . . . . . . . . . . . . . . . . . . . . 9A–16
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–16
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–16
Third Seat Striker . . . . . . . . . . . . . . . . . . . . . . 9A–16
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–16
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9A–16
Main Data and Specifications . . . . . . . . . . . . 9A–17
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fasteners joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fasteners.
When you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

SUPPLEMENTAL RESTRAINT SYSTEM9J–1
RESTRAINTS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
CONTENTS
Service Precaution 9J–1. . . . . . . . . . . . . . . . . . . . . .
General Description 9J–2. . . . . . . . . . . . . . . . . . . . .
SRS Component And Wiring Location View 9J–4.
Component Description 9J–4. . . . . . . . . . . . . . . . . .
Definitions 9J–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis 9J–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS Connector Body Face Views 9J–9. . . . . . . . .
Repairs And Inspections Required After
An Accident 9J–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
On–Vehicle Service 9J–10. . . . . . . . . . . . . . . . . . . . . .
Air Bag Assembly Handling / Shipping
/ Scrapping 9J–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pretensioner Seat Belt Handling / Shipping
/ Scrapping. 9J–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Tools 9J–26. . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precautions for SRS Component
Service 9J–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS Connectors 9J–31. . . . . . . . . . . . . . . . . . . . . . . .
Sensing And Diagnostic Module (SDM) 9J–33. . . .
Service Precautions 9J–33. . . . . . . . . . . . . . . . . . .
Removal 9J–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–33. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver Air Bag Assembly 9J–35. . . . . . . . . . . . . . . . .
Service Precautions 9J–35. . . . . . . . . . . . . . . . . . .
Removal 9J–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–36. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Wheel 9J–37. . . . . . . . . . . . . . . . . . . . . . . . . Service Precautions 9J–37. . . . . . . . . . . . . . . . . . .
Removal 9J–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–38. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS Coil Assembly 9J–39. . . . . . . . . . . . . . . . . . . . . .
Service Precautions 9J–39. . . . . . . . . . . . . . . . . . .
Removal 9J–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–41. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS Coil Replacement Procedure 9J–42. . . . . . . . .
Removal 9J–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Disconnect the horn terminal 9J–43. . . . .
How to Connect Horn Terminal 9J–43. . . . . . . . . .
Installation 9J–44. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Column 9J–44. . . . . . . . . . . . . . . . . . . . . . . .
Service Precautions 9J–44. . . . . . . . . . . . . . . . . . .
Removal 9J–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–46. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passenger Air Bag Assembly 9J–48. . . . . . . . . . . . .
Service Precautions 9J–48. . . . . . . . . . . . . . . . . . .
Removal 9J–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–48. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pretensioner Seat Belt (If so equipped) 9J–49. . . .
Service Precaution 9J–49. . . . . . . . . . . . . . . . . . . .
Parts Location 9J–49. . . . . . . . . . . . . . . . . . . . . . . .
Removal 9J–49. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J–49. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 9J–50. . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

SUPPLEMENTAL RESTRAINT SYSTEM 9J–4
SRS Component And Wiring Location View
810RW298
Legend
(1) Battery
(2) Relay & Fuse Box
(3) Passenger Air Bag Assembly
(4) SDM
(5) Meter Assembly
(6) SRS Coil Assembly
(7) Driver Air Bag Assembly(8) Starter Switch
(9) Fuse Box, C–21
(10) SRS Body Earth
(11) Body Harness Connector
(12) Instrument Harness Connector
(13) Engine Haness Connector
(14) Pretensioner, LH (If so equipped)
(15) Pretensioner, RH (If so equipped)
Component Description
SDM (Sensing and Diagnostic Module)
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 BRACKETFASTENERS MUST BE CAREFULLY TORQUED AND
THE ARROW MUST BE POINTED 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.
The Sensing and Diagnostic Module (SDM) is designed
to perform the following functions in the SRS:

SUPPLEMENTAL RESTRAINT SYSTEM9J–5
1. Energy Reserve — The SDM maintains 24–Volt Loop
Reserve (24VLR) energy supply to provide
deployment energy when ignition voltage is lost in a
frontal crash.
2. Frontal Crash Detection — The SDM monitors
vehicle velocity changes to detect frontal crashes
which are severe enough to warrant deployment.
3. Air Bag Deployment — When a frontal crash of
sufficient force is detected, the SDM will cause
enough current to flow through the air bag assembly
to deploy the air bag.
4. Malfunction Detection — The SDM performs
diagnostic monitoring of SRS electrical components
and sets a diagnostic trouble code when a
malfunction is detected.
5. Frontal Crash Recording — The SDM records
information regarding SRS status during frontal
crash.
6. Malfunction Diagnosis — The SDM displays SRS
diagnostic trouble codes and system status
information through the use of a scan tool.
7. Driver Notification — The SDM warns the vehicle
driver of SRS malfunctions by controlling the “Air
Bag” warning lamp.
The SDM is connected to the SRS wiring harness by a
24–pin connector. This harness connector uses a
shorting clip across certain terminals in the contact area.
This shorting clip connects the “AIR BAG” warning lamp
to ground when the SDM harness connector is
disconnected or CPA (Connector Position Assurance) is
not inserted even if completely connected. This will
cause the “AIR BAG” warning lamp to come “ON” steady
whenever the ignition switch is at the ON or START
positions with the SDM disconnected.
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Legend
(1) SDM
(2) SRS Harness
(3) Connector Position Assurance
“Air Bag” Warning Lamp
Ignition voltage is applied to the “AIR BAG” warning lamp
when the ignition switch is at the ON or START positions.
The SDM controls the lamp by providing ground with a
lamp driver. The “AIR BAG” warning lamp is used in the
SRS to do the following:
1. Verify lamp and SDM operation by turn on 3.5
seconds and then turns “OFF” when the ignition
switch is first turned “ON”.
2. Warn the vehicle driver of SRS electrical system
malfunctions which could potentially affect the
operation of the SRS. These malfunctions could
result in nondeployment in case of a frontal crash or
deployment for conditions less severe than intended.
The “AIR BAG ” warning lamp is the key to driver
notification of SRS malfunctions. For proper lamp
operation, refer to the “SRS Diagnostic System Check” in
this section.
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SRS Coil Assembly
The SRS coil assembly consists of two current carrying
coils. This is attached to the steering column and allow
rotation of the steering wheel while maintaining
continuous contact of the driver deployment loop to the
driver air bag assembly.
There is a shorting clip on the yellow 2–pin connector near
the base of steering column which connects the SRS coil
to the SRS wiring harness.
The shorting clip shorts to the SRS coil and driver air bag
assembly when the yellow 2–pin connector is
disconnected. The circuit to the driver air bag assembly is
shorted in this way to help prevent unwanted deployment
of the air bag when servicing the steering column or other
SRS components.

SUPPLEMENTAL RESTRAINT SYSTEM 9J–8
the deployment loops, high resistance or opens in the
“Driver Side High”, “Driver Side Low”, “Passenger Side
High” and “Passenger Side Low” circuits and measures
the resistance of the inflator assembly consisting of 1)
Initiators, 2) SRS coil assembly (driver side only), 3)
Connectors and associated wiring.
Normal Operating Voltage Range
The voltage measured between the SDM “Ignition 1”
terminals and “Ground” terminals is between 9 and 16
volts.
Passenger Current Source
An output of the SDM which applies current into the
passenger air bag assembly circuit during the “Initiator
Assembly Resistance Test”.
Passenger Air Bag Assembly
An assembly located in the right side of the instrument
panel consisting of an inflatable bag, an inflator and an
initiator.
Scan Tool
An external computer used to read diagnostic information
from on–board computers via the data link connector.
SDM
Sensing and Diagnostic Module which provides reserve
energy to the deployment loops, deploys the air bags
when required and performs diagnostic monitoring of all
SRS components.
Serial Data
Information representing the status of the SRS.
SRS
Supplemental Restraint System.
SRS Coil Assembly
An assembly of two current–carrying coils in the driver
deployment loop that allows the rotation of the steering
wheel while maintaining the continuous contact of the
driver deployment loop to the driver air bag assembly.
SRS Wiring Harness
The wires and connectors that electrically connect the
components in the SRS.
“Turn–ON”
Test which the SDM performs on the SRS once during
each ignition cycle immediately after “Ignition 1” voltage
is applied to the SDM and before “Continuous
Monitoring”.
Diagnosis
WARNING: TO AVOID DEPLOYMENT WHEN
TROUBLESHOOTING THE SRS, DO NOT USE
ELECTRICAL TEST EQUIPMENT SUCH AS A
BATTERY–POWERED OR AC–POWERED
VOLTMETER, OHMMETER, ETC., OR ANY TYPE OF
ELECTRICAL EQUIPMENT OTHER THAN THAT
SPECIFIED IN THIS MANUAL. DO NOT USE A
NONPOWERED PROBE–TYPE TESTER.
INSTRUCTIONS IN THIS MANUAL MUST BE
FOLLOWED CAREFULLY, OTHERWISE PERSONAL
INJURY MAY RESULT.
Diagnostic Trouble Codes
The “SRS Diagnostic System Check” must always be the
starting point of any SRS diagnosis. The “SRS
Diagnostic System Check” checks for proper “AIR BAG”
warning lamp operation and checks for SRS diagnostic
trouble codes using the scan tool.
1. Current diagnostic trouble codes – Malfunctions that
are presently being detected. Current diagnostic
trouble codes are stored in RAM (Random Access
Memory).
2. History diagnostic trouble codes – All malfunctions
detected since the last time the history memory was
cleared. History diagnostic trouble codes are stored
in EEPROM.
Scan Tool Diagnostics
A scan tool is used to read current and history diagnostic
trouble codes and to clear all diagnostic trouble codes
after a repair is completed. The scan tool must be
updated to communicate with the SRS through a
replaceable cartridge before it can be used for SRS
diagnostics. To use the scan tool, connect it to the data
link connector and turn the ignition switch “ON”. The scan
tool reads serial data from the SDM “Serial Data” line
terminal “24” to the data link connector terminal “9”.
Use Of Special Tools
WARNING: TO AV O I D D E P L O Y M E N T W H E N
TROUBLESHOOTING THE SRS, DO NOT USE
ELECTRICAL TEST EQUIPMENT SUCH AS A
BATTERY–POWERED OR AC–POWERED
VOLTMETER, OHMMETER, ETC, OR ANY TYPE OF
ELECTRICAL EQUIPMENT OTHER THAN THAT
SPECIFIED IN THIS MANUAL. DO NOT USE A NON
POWERED PROBE–TYPE TESTER. INSTRUCTIONS
IN THIS MANUAL MUST BE FOLLOWED
CAREFULLY, OTHERWISE PERSONAL INJURY MAY
RESULT. YOU SHOULD BE FAMILIAR WITH THE
TOOLS LISTED IN THIS SECTION UNDER THE
HANDLING SRS SPECIAL TOOLS.
You should be able to measure voltage and resistance.
You should be familiar with proper use of a scan tool such
as the Tech 2 Diagnostic Computer, SRS
Driver/Passenger Load Tool 5–8840–2421–0, Connector
Test Adapter Kit 5–8840–0385–0, and the DVM (Digital
Multimeter) 5–8840–0285–0.