Dodge Ram Truck 1500-2500-3500. Manual — part 494
AIRBAG WARNING INDICATOR SHORT (CONTINUED)
3.
WARNING INDICATOR
With the DRBIII
T
select PASSIVE RESTRAINTS, AIRBAG, and MONITOR DISPLAY.
Using the DRBIII
T
, read the WARNING LAMP MONITOR screen.
Select the LAMP STATUS displayed on the DRB monitors screen.
Observe the Lamp Driver State and Actual Lamp State.
Is the LAMP DRIVER and ACTUAL LAMP STATE: OK?
Yes
>> Go To 4
No
>> Replace the Instrument Cluster in accordance with the Service Information.
Perform ORC VERIFICATION TEST - VER 1.
4.
ORC, WARNING LAMP CIRCUIT
WARNING: WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT
THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER IS DROPPED AT ANY TIME, IT MUST
BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG
DEPLOYMENT AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.
Repair
Replace the Occupant Restraint Controller (ORC) in accordance with the Service Information.
Perform ORC VERIFICATION TEST - VER 1.
5.
CHECKING STORED OR INTERMITTENT CODES
With the DRBIII
T
, record and erase all DTC’s from all Airbag modules.
If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
WARNING: 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 broken, bent, pushed out, spread, corroded, or
contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.
WARNING: WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECON-
NECT THE BATTERY.
With the DRBIII
T
, monitor active codes as you work through the following steps.
WARNING: WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE DISTANCE FROM ALL
AIRBAGS WHILE PERFORMING THE FOLLOWING 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 DTCs present?
Yes
>> Select the appropriate diagnostic procedure from the Table of Contents in this section.
No
>> No problem found at this time. Erase all codes before returning vehicle to customer.
8O - 10
RESTRAINTS - ELECTRICAL DIAGNOSTICS
DR/DH
CALIBRATION MISMATCH
•
When Monitored:
With the Ignition on.
•
Set Condition:
This DTC will be set when the VIN stored in the PCM does not match the VIN stored in the Occupant
Restraint Controller (ORC).
Possible Causes
INCORRECT PCM
OCCUPANT RESTRAINT CONTROLLER (ORC)
Diagnostic Test
1.
VERIFY THAT THE DTC IS ACTIVE
Turn the ignition on.
With the scan tool, read ORC DTCs.
NOTE: Ensure the battery is fully charged.
NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must
be disconnected.
Does the scan tool display active: CALIBRATION MISMATCH?
Yes
>> Go To 2
No
>> Test Complete.
2.
CHECK VIN IN PCM
With the scan tool compare the VIN that is programmed into the PCM to the VIN stored in the ORC.
Does the VIN programmed into the PCM match the VIN stored in the ORC?
Yes
>> Go To 3
No
>> Replace and program the Powertrain Control Module in accordance with the service information. Ensure
the PCM is replaced with the correct vehicle line PCM.
Perform POWERTRAIN VERIFICATION TEST.
3.
REPLACE THE OCCUPANT RESTRAINT CONTROLLER
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes before proceeding.
WARNING: If the occupant restraint controller is dropped at any time, it must be replaced. Failure to take
the proper precautions can result in accidental airbag deployment and personal injury or death.
View repair.
Repair
Replace the Occupant Restraint Controller in accordance with the service information.
Perform the ORC VERIFICATION TEST-VER 1.
DR/DH
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 11
CLUSTER MESSAGE MISMATCH
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
After the Instrument Cluster bulb check is completed, the ORC compares the lamp request by the ORC (On or
Off) and the Lamp On request by the Instrument Cluster (On or Off) bus messages. Each message is trans-
mitted one time per second or when a change in the lap state occurs.
•
Set Condition:
If the lamp request by the ORC (On or Off), and the Lamp On by the Instrument Cluster (On or Off), messages
do not match, this code will set.
Possible Causes
OCCUPANT RESTRAINT CONTROLLER, INSTRUMENT CLUSTER MESSAGE MISMATCH
INSTRUMENT CLUSTER
OCCUPANT RESTRAINT CONTROLLER
Diagnostic Test
1.
CHECK FOR AN ACTIVE DTC
NOTE: Ensure the battery is fully charged.
NOTE: When reconnecting Airbag system components, the ignition 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 Restraint Controller (ORC) DTCs.
Select DTC type.
Active
Go To 2
Stored
Go To 5
2.
CHECK FOR ACTIVE INSTRUMENT CLUSTER DTCs
With the scan tool, read Instrument Cluster DTCs.
Does the scan tool display any active Instrument Cluster DTCs?
Yes
>> (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - DIAGNOSIS AND TESTING) for the diagnostic
test procedures.
Perform the ORC VERIFICATION TEST-VER 1.
No
>> Go To 3
8O - 12
RESTRAINTS - ELECTRICAL DIAGNOSTICS
DR/DH
CLUSTER MESSAGE MISMATCH (CONTINUED)
3.
CHECK THE ORC AND INSTRUMENT CLUSTER FOR LAMP STATUS
With the scan tool view the Instrument Cluster Data Display.
Cycle the ignition key and observe the SRS Indicator Lamp Request status (Set/Not Set) during the Instrument
Cluster bulb check.
With the scan tool view the ORC Data Display.
Cycle the ignition key and observe the SRS Indicator Lamp Status (Lamp On/Lamp Off) during the Instrument Clus-
ter bulb check.
Did the Data Display information match the operation of the lamp?
Yes
>> Go To 4
No
>> Replace the Instrument Cluster in accordance with the service information.
Perform the ORC VERIFICATION TEST-VER 1.
4.
REPLACE THE OCCUPANT RESTRAINT CONTROLLER
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes before proceeding.
WARNING: If the Occupant Restraint Controller is dropped at any time, it must be replaced. Failure to take
the proper precautions could result in accidental airbag deployment and personal injury or death.
If there are no possible causes remaining, view repair.
Repair
Replace the Occupant Restraint Controller in accordance with the service information.
Perform the ORC VERIFICATION TEST-VER 1.
5.
TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase all DTCs from all Airbag modules.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes 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 broken, bent, pushed out, spread, corroded, or
contaminated terminals.
The following additional checks may assist you in identifying a possible 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 following steps.
WARNING: To avoid personal injury or death, maintain a safe distance from all airbags while performing the
following 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 the active DTC in ques-
tion.
Does the scan tool display any ACTIVE DTCs?
Yes
>> Select appropriate symptom from Symptom List.
No
>> No problem found at this time. Erase all codes before returning vehicle to customer.
DR/DH
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 13
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