Dodge Durango (HB). Manual — part 512
B1BBC-OCS NEGATIVE SYSTEM WEIGHT (CONTINUED)
•
When Monitored:
While the CAN bus ignition status is in IGN_RUN, the module checks the sensor input ranges.
•
Set Condition:
If the module detects a seat weight sensor input with the total seat weight below -6.5 kg +/- 1kg.
Possible Causes
DAMAGE TO THE PASSENGER SEAT STRUCTURE, RISER ASSEMBLY, CROSSMEMBERS, SEAT TRACKS,
FLOOR PAN
OBJECT UNDER SEAT OR REAR SEAT FOLDED DOWN AND RESTING AGAINST PASSENGER SEAT
OCCUPANT CLASSIFICATION MODULE (OCM)
Diagnostic Test
1.
TEST CONDITIONS
•
ACTIVE INTERNAL FAULTS
•
IGNITION FAULTS
•
BATTERY FAULT
•
SEAT WEIGHT SENSOR DTC
NOTE: Ensure the battery is fully charged.
NOTE: When reconnecting Airbag system components, the igni-
tion must be turned off and the battery must be disconnected.
Turn the ignition on, then off, and then on again.
With the scan tool, read Occupant Classification Module (OCM) DTCs.
Does the scan tool display any active DTCs listed above?
Yes
>> Diagnose and repair the DTCs. Refer to the Table of Con-
tents in this Section for a complete list of symptoms.
No
>> Go To 2
2.
ACTIVE OR STORED DTC
With the scan tool, read OCM DTCs.
Does the scan tool display active: B1BBC–NEGATIVE SYSTEM
WEIGHT?
Yes
>> Go To 3
No
>> Go To 4
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
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B1BBC-OCS NEGATIVE SYSTEM WEIGHT (CONTINUED)
3.
PERFORM OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST
Verify that the passenger seat is empty.
Verify that all of the Seat Weight Sensor mounting screws are torqued
to specification. Refer to 23 - BODY/SEATS.
NOTE: Failure to follow the test instructions or aborting the test
will cause faults to set when performing the Occupant Classifica-
tion Module System Verification Test. To prevent faults due to
process errors: Verify That All Tests Steps That Led You Here
Were Performed As Directed; Verify That The Ignition Is In Run;
Wait 30 Seconds After Changing The Seat Weight Before Pro-
ceeding To Allow The System To Stabilize; Only Press Scan Tool
Buttons When Directed To Do So; & Perform The Occupant Clas-
sification Module System Verification Test To Completion.
With the scan tool in OCM, select More Options, select System Tests,
and select Occupant Classification Module System Verification Test.
Run the test by following the instructions displayed on the scan tool.
When the test is complete, proceed as follows.
With the scan tool, read OCM DTCs.
Does the scan tool display active: B1BA8–OCS NOT CALIBRATED DTC?
Yes
>> Perform the *Diagnosis/Checkout Procedure For Seat Weight Sensors.
Perform OCS VERIFICATION TEST - VER 1.
No - But Other DTCs Present
Diagnose and repair the DTCs. Refer to the Table of Contents in this Section for a complete list of
symptoms.
No - No Active DTCs Present
Perform OCS VERIFICATION TEST - VER 1.
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
HB
B1BBC-OCS NEGATIVE SYSTEM WEIGHT (CONTINUED)
4.
STORED B1BBC-OCS NEGATIVE SYSTEM WEIGHT DTC
With the scan tool, record and erase all DTC’s from all Airbag System
Modules.
If any ACTIVE codes are present they must be resolved before diag-
nosing any stored codes.
WARNING: To avoid personal injury or death, turn the ignition off,
disconnect the battery and wait two minutes before proceeding.
Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors.
Look for chaffed, pierced, pinched, or partially broken wires and bro-
ken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possi-
ble intermittent problem.
Reconnect any disconnected components and harness connector.
WARNING: To avoid personal injury or death, turn the ignition on,
then reconnect the battery.
With the scan tool monitor active codes as you work through the fol-
lowing steps.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
IF only stored codes return continue the test until the problem area has been isolated.
In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
Are any ACTIVE DTC’s present?
Yes
>> Select appropriate symptom from Symptom List.
No
>> No problem found at this time. Erase all codes before returning vehicle to customer.
HB
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 319
B1BBD-OCM CURRENT CONFIGURATION TABLE UNPROGRAMMED
For the Occupant Classification System circuit diagram (Refer to 8 - ELECTRICAL/RESTRAINTS - SCHEMATICS
AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
If the Configuration Table is not programmed at the supplier or when the checksum is invalid.
•
Set Condition:
This DTC will set if the module was received unprogrammed from the supplier, the vehicle line was not iden-
tified correctly or if the flash procedure was not completed successfully
Possible Causes
NEW OCCUPANT CLASSIFICATION MODULE
INTERNAL CHECKSUM FAILURE
Diagnostic Test
1.
MODULE CONFIGURATION
Does the scan tool display B1BBD-OCM CURRENT CONFIGU-
RATION TABLE UNPROGRAMMED?
Yes
>>
Perform the B1BA7–OCS VERIFICATION REQUIRED
diagnostic procedure.
No
>> Replace the Occupant Classification Module in accordance
with the service information.
With the scan tool, perform the OCM SYSTEM VERIFICA-
TION procedure.
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
HB
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