501-20B-5 Occupant Restraints — Passive — Supplemental Air 501-20B-5
Bag System
DIAGNOSIS AND TESTING
Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS)
Refer to Wiring Diagrams Cell: 50120, Occupant
Restraints - Passive for schematic and connector
information.
Special Tool(s)
Test and Deployment Lead,
Air Bag/Pyrotechnic Safety
Belt
418-S055 (40-007)
Simulator - Driver and
Passenger Air Bags
418-037 (40-001)
Simulator - Pyrotechnic
Safety Belt
501-074 (40-017)
General Equipment
WDS
Diagnosing Customer Concerns Without Hard
DTCs/LFCs
WARNING: The battery back up power
supply must be depleted before any work
is carried out on the supplemental
restraint system and adjacent
components. Failure to follow this
instruction may result in personal injury.
NOTE: Following the pinpoint tests when a
diagnostic trouble code/lamp fault code
(DTC/LFC) is not present, will result in needless
replacement of air bag system components and
repeat repairs.
Speak with the customer to determine if a
particular set of conditions must be met in order
to indicate a fault. If a LFC is reported by the
customer but is not present when the vehicle
comes in for repair, pinpoint test diagnostics
cannot be used. Instruct the customer on how to
count a LFC.
Diagnosing Customer Concerns with Hard
DTCs / LFCs
WARNING: Do not use substitute air bag
simulators when working on the
supplemental restraint system. Use only
the appropriate tool. Failure to follow
these instructions may result in personal
injury.
Most air bag system diagnostic procedures
require the use of system deactivation and
system reactivation procedures. These
procedures require the air bag module(s) and
safety belt pre-tensioner's to be disconnected
from the SRS, thereby removing the risk of the air
bag deployment while diagnostics are carried out.
Air bag simulators are required to carry out
diagnosis and testing of the air bag system. It is
not acceptable to short-circuit the air bag module
connections with a 0 ohm jumper wire. If a 0 ohm
jumper wire is used to short-circuit the air bag
module connections, a LFC will be displayed and
a DTC logged by the air bag control module.
Deactivation
WARNING: The back up power supply
must be depleted before any work is
carried out on the supplemental restraint
system. Wait at least one minute after
disconnecting the battery ground cable
before disconnecting any supplemental
restraint system electrical connector.
Failure to follow this instruction may
result in personal injury.
1. Disconnect the battery ground cable.
REFER
to Section 414-01.
2. Wait at least one minute for the backup
power supply in the air bag control module to
deplete its stored energy.
WARNING: Place the air bag module(s) on
a ground wired bench, with the trim
cover facing up. Failure to follow this
instruction may result in personal injury.
3. Remove the driver air bag module from the
vehicle.
REFER to Driver Air Bag Module in
this section.
4. Connect the driver air bag simulator to the
sub-harness in place of the driver air bag
module at the top of the steering column.
08/2001 2002 Bantam
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