Restraint Control System - Isuzu Trooper 1999 Workshop Manual

Trooper
Service Precaution . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information . . . . . . . . . . . . . . . . . . .
System Schematic . . . . . . . . . . . . . . . . . . . . . .
SRS Diagnostic System Check
Chart A SDM Integrity Check
Chart B "AIR BAG" Warning Lamp
Comes "ON" Steady . . . . . . . . . . . . . . . . . . . .
Chart C "AIR BAG" Warning Lamp Does
Not Come "ON" Steady (1/2)
DTC 15 Passenger Deployment Loop
Resistance High . . . . . . . . . . . . . . . . . . . . . . . .
DTC 16 Passenger Deployment loop
Resistance Low . . . . . . . . . . . . . . . . . . . . . . . .
DTC 17 Passenger Deployment Loop
Open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 18 Passenger Deployment Loop
Short To Ground . . . . . . . . . . . . . . . . . . . . . . . .
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
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.
RESTRAINTS

RESTRAINT CONTROL SYSTEM

CONTENTS
9J1–1
9J1–2
9J1–4
. . . . . . . . . . . . 9J1–4
. . . . . . . . . . . . . 9J1–6
9J1–8
. . . . . . . . . . . . . 9J1–10
9J1–13
9J1–15
9J1–17
9J1–19
RESTRAINT CONTROL SYSTEM
DTC 19 Passenger Deployment Loop
Short To Voltage . . . . . . . . . . . . . . . . . . . . . . . .
DTC 21 Driver Deployment Loop
Resistance High . . . . . . . . . . . . . . . . . . . . . . . .
DTC 22 Driver Deployment Loop
Resistance Low . . . . . . . . . . . . . . . . . . . . . . . .
DTC 24 Driver Deployment Loop
Short To Ground . . . . . . . . . . . . . . . . . . . . . . . .
DTC 25 Driver Deployment Loop
Short To Voltage . . . . . . . . . . . . . . . . . . . . . . . .
DTC 26 Driver Deployment Loop Open
DTC 51 Deployment Event Commanded
DTC 53 Deployment Commanded With
Deployment Loop Fault Or Energy
Reserves Out Of Range
DTC 61 Warning Lamp Circuit Failure
DTC 71 Internal SDM Fault
SECTION
9J1–1
9J1–21
9J1–23
9J1–26
9J1–28
9J1–30
. . . . 9J1–32
. . . 9J1–34
. . . . . . . . . . . . . . . . . 9J1–36
. . . . . 9J1–38
. . . . . . . . . . . . . . 9J1–40