RAM 2500 Truck 2WD V8-5.7L VIN D (2004)
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faults display on the DRBIII(R) as test messages only after running the test.
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faults will not display on the DRBIII(R) as Diagnostic Trouble Codes.
When Performing The Actuator Circuit Test
CAUTION:
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To ensure a proper diagnosis, repair all Short Too Complex messages first, all common door driver circuit related messages second, and all other
door driver circuit related messages last.
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The DRBIII(R) can display up to three Actuator Circuit Test messages at a time. After repairing each Actuator Circuit Test message, cycle the
ignition switch, then rerun the Actuator Circuit Test to ensure no new messages exist.
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The Short Too Complex message:
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indicates that a specific determination of which lines are shorted could not be made.
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is caused by more than three drivers being shorted in the same direction. For example, four drivers all shorted to ground, or two or more
drivers shorted with at least one driver shorted to ignition/battery and one driver shorted to ground.
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Messages displaying:
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XXX Driver/Circuit Shorted to Ignition/ Battery will set on a per-driver basis.
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XXX Driver/Circuit Shorted to Ground will set on a per-driver basis.
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the same two drivers/circuits shorted to ignition/battery as-well-as shorted to ground indicates that two actuator driver circuits are shorted
together.
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When the test returns passed, then troubleshooting should proceed to clearing faults and running the HVAC Door Recalibration system test as a
final check of system health.
Instrument Cluster
The DR Instrument Cluster is a new type of control module that includes the hardware and software necessary to function as the cluster and the body
control module. The Instrument Cluster houses the Speedometer, Tachometer, Fuel gauge, Coolant Temperature gauge, Oil Pressure gauge, and the
Voltage gauge. The cluster positions all of the gauges using PCI bus messages received from the PCM. The cluster contains certain warning indicators,
depending on engine type and options. Some of the indicators are hardwire inputs and some indicators are controlled via PCI bus messages. The warning
chime tone generator is contained within the cluster. The cluster includes a vacuum fluorescent (VF) display for the PRNDL, Total and Trip Odometers.
The VF will also display warning messages such as door ajar, low washer fluid level, engine hours, and no bus communications. The cluster has the
ability to set and store DTCs, communicate on the PCI bus, display engine information, and display certain inputs using the DRBIII(R).
The following systems are controlled either completely by the Instrument Cluster or in conjunction with other inputs received by hardwire or via the PCI
bus:
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Audible Warnings
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Brake Lamp Control
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Brake Transmission Shift Interlock (BTSI)
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Cargo Lamp Control
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Central Locking
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Door Lock Inhibit
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Enhanced Accident Response
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Exterior Lighting Control
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Exterior Lighting Fail-Safe
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Heated Seat Control
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Horn Control
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Interior Lamp Control
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Interior Lamps - Enhanced Accident Response
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Interior Lamps Load Shedding
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Lamp Out Indicator Control
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Panel Lamps Dimming Control
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Parade Mode
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Power Locks
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Remote Keyless Entry (RKE)
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Remote Radio Switch Interface
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Rolling Door Locks
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Turn Signal and Hazard Warning Lamp Control
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Vacuum Fluorescent Display Synchronization
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Vehicle Theft Security System (VTSS)
CAUTION: Instrument clusters used in this model automatically configure themselves for compatibility with the features and optional equipment in the
vehicle in which they are initially installed. The instrument cluster is programmed to do this by embedding the Vehicle Identification Number (VIN) and
other information critical to proper cluster operation in electronic memory. This embedded information is learned through electronic messages received
from other electronic modules in the vehicle over the Programmable Communications Interface (PCI) data bus, and through certain hard wired inputs
received when the cluster is connected to the vehicle electrically.
