For a complete wiring diagram, refer to the Wiring Information.
Theory of Operation
When Monitored:
With the
ignition on.
Set Condition:
The Occupant
Restraint Controller (ORC) monitors the resistance of the Passenger
Squib 1 circuits. The ORC will set this DTC if it detects low resistance
on the Passenger Squib 1 circuits.
Possible Causes
(R42) PASSENGER SQUIB
1 LINE 2 CIRCUIT SHORTED TO GROUND
(R44) PASSENGER
SQUIB 1 LINE 1 CIRCUIT SHORTED TO GROUND
PASSENGER AIRBAG
OCCUPANT RESTRAINT
CONTROLLER (ORC)
1.
DETERMINE ACTIVE OR STORED DTC
NOTE:
Make sure that the battery is fully charged.
NOTE:
The scan tool, SRS Load Tool Kit 8443A, and DVOM are required to perform the following test.
2.
CHECK FOR SHORTED SQUIB CIRCUITS IN PASSENGER AIRBAG
WARNING:
Turn the ignition off, disconnect
the 12-volt battery and wait two minutes before proceeding. Failure
to follow these instructions may result in possible serious or fatal
injury.
1.
Disconnect the Passenger Airbag Squib connectors.
WARNING:
Do not place an intact non-deployed
airbag face down on a hard surface, the airbag propels into the air
if accidentally deployed. Failure to follow these instructions may
result in possible serious or fatal injury.
NOTE:
Check connectors - Clean and repair as necessary.
2.
Connect the SRS Load Tool Kit
8443A
and SRS Load Tool Jumper
8443-8
to the Passenger Airbag Squib connectors.
WARNING:
Turn the ignition on, then reconnect
the 12-volt battery and wait two minutes before proceeding. Failure
to follow these instructions may result in possible serious or fatal
injury.
3.
With the scan tool, read the active ORC DTCs.
Does the scan tool display B1B08-PASSENGER AIRBAG SQUIB 1 CIRCUIT LOW DTC?
Turn the ignition off, disconnect
the 12-volt battery and wait two minutes before proceeding. Failure
to follow these instructions may result in possible serious or fatal
injury.
Replace the Passenger Airbag in accordance with the Service Information.
3.
CHECK (R42) PASSENGER SQUIB 1 LINE 2 CIRCUIT AND (R44) PASSENGER SQUIB 1 LINE 1 CIRCUIT FOR A SHORT TO GROUND
WARNING:
Turn the ignition off, disconnect
the 12-volt battery and wait two minutes before proceeding. Failure
to follow these instructions may result in possible serious or fatal
injury.
1.
Disconnect the SRS Load Tool Kit
8443A
from the Passenger Airbag Squib connector.
2.
Disconnect the ORC connectors.
NOTE:
Check connectors - Clean and repair as necessary.
3.
Connect the SRS Load Tool Adaptor
8443-32-L
to the ORC connectors.
4.
Measure the resistance of the (R42) Passenger Squib 1 Line 2 circuit between the SRS Load Tool Adaptor
8443-32-L
cavity C1-2 and ground.
5.
Measure the resistance of the (R44) Passenger Squib 1 Line 1 circuit between the SRS Load Tool Adaptor
8443-32-L
cavity C1-1 and ground.
Is the resistance below 10K Ohms on either circuit?
Yes
Repair the Passenger Squib 1 circuits with resistance below 10K Ohms for a short to ground.
If the Occupant Restraint Controller
(ORC) is dropped at any time, it must be replaced. Failure to follow
these instructions may result in possible serious or fatal injury.
Replace the Occupant Restraint Controller in accordance with the Service Information.
With the scan tool, record and erase all Airbag System Module DTCs.
WARNING:
Turn the ignition off, disconnect
the 12-volt battery and wait two minutes before proceeding. Failure
to follow these instructions may result in possible serious or fatal
injury.
2.
Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chafed, pierced, pinched, and partially broken wires, and for broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary.
3.
Reconnect all disconnected components and harness connectors.
WARNING:
Turn the ignition on, then reconnect
the 12-volt battery and wait two minutes before proceeding. Failure
to follow these instructions may result in possible serious or fatal
injury.
4.
With the scan tool, monitor for active codes while performing the following:
Wiggle the wiring harness and connectors of the related airbag circuit.
Continue the test until either a code becomes active or the problem area is isolated.
5.
In the previous steps you have attempted to recreate the conditions responsible for setting the DTC in question / causing the intermittent condition.
