Dodge Ram Truck 1500-2500-3500. Manual — part 493

AIRBAG WARNING INDICATOR OPEN (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With ignition on the Occupant Restraint Controller (ORC) monitors the PCI Bus for a message from the MIC
containing the airbag warning indicator status. The ORC request the warning lamp status from the MIC once
every second.

•

Set Condition:
This DTC will set immediately if the indicator status is OPEN.

Possible Causes

MIC, COMMUNICATION FAILURE

MIC, WARNING INDICATOR

ORC, WARNING INDICATOR CIRCUITS

Diagnostic Test

1.

DETERMINE ACTIVE OR STORED DTC

Turn the ignition on.

NOTE: Ensure that the battery is fully charged.

NOTE: For the purpose of this test, the AECM and ORC modules will be referred to as an ORC.

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must
be disconnected.

Select ACTIVE or STORED DTC:

ORC - ACTIVE DTC

Go To 2

ORC - STORED DTC

Go To 5

2.

MIC COMMUNICATION FAILURE

With the DRBIII

T

, ensure PCI Bus communications with the Instrument Cluster.

Is the Instrument Cluster communicating on the PCI Bus?

Yes

>> Go To 3

No

>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for No

Response diagnostic test procedures.

Perform ORC VERIFICATION TEST - VER 1.

8O - 6

RESTRAINTS - ELECTRICAL DIAGNOSTICS

DR/DH

AIRBAG WARNING INDICATOR OPEN (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.

DR/DH

RESTRAINTS - ELECTRICAL DIAGNOSTICS

8O - 7

AIRBAG WARNING INDICATOR SHORT

8O - 8

RESTRAINTS - ELECTRICAL DIAGNOSTICS

DR/DH

AIRBAG WARNING INDICATOR SHORT (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With ignition on the Occupant Restraint Controller (ORC) monitors the PCI Bus for a message from the MIC
containing the airbag warning indicator status. The ORC request the warning lamp status from the MIC once
every second.

•

Set Condition:
This DTC will set immediately if the indicator status is SHORT.

Possible Causes

MIC, COMMUNICATION FAILURE

MIC, WARNING INDICATOR

ORC, WARNING INDICATOR CIRCUITS

Diagnostic Test

1.

DETERMINE ACTIVE OR STORED DTC

Turn the ignition on.

NOTE: Ensure that the battery is fully charged.

NOTE: For the purpose of this test, the AECM and ORC modules will be referred to as an ORC.

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must
be disconnected.

Select ACTIVE or STORED DTC:

ORC - ACTIVE DTC

Go To 2

ORC - STORED DTC

Go To 5

2.

MIC COMMUNICATION FAILURE

With the DRBIII

T

, ensure PCI Bus communications with the Instrument Cluster.

Is the Instrument Cluster communicating on the PCI Bus?

Yes

>> Go To 3

No

>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for No

Response diagnostic test procedures.

Perform ORC VERIFICATION TEST - VER 1.

DR/DH

RESTRAINTS - ELECTRICAL DIAGNOSTICS

8O - 9