Dodge Ram. Manual — part 110
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Transmission Range Sensor harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Measure the resistance of the Transmission Range Sensor 5 Volt Supply circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the TRS 5 Volt Supply circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and configure the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
437
INSTRUMENT CLUSTER
PRNDL SWITCH INPUT CIRCUIT OPEN (DIESEL ONLY) —
Continued
Symptom:
PRNDL SWITCH INPUT CIRCUIT SHORTED (DIESEL ONLY)
When Monitored and Set Condition:
PRNDL SWITCH INPUT CIRCUIT SHORTED (DIESEL ONLY)
When Monitored:
With the ignition on.
Set Condition:
The instrument Cluster detects that a short condition exists in the
PRNDL circuit.
POSSIBLE CAUSES
TRANSMISSION RANGE SENSOR
TRS 5 VOLT SUPPLY CIRCUIT SHORT TO TRS MUX CIRCUIT
TRS 5 VOLT SUPPLY CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure that the correct Instrument Cluster is installed and is
correctly configured for the vehicle.
Turn the ignition off.
Disconnect the Transmission Range Sensor harness connector.
Turn the ignition on.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display PRNDL Input Circuit Open?
All
Yes
→ Replace the Transmission Range Sensor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the Transmission Range Sensor harness connector.
Disconnect the Instrument Cluster C2 and C3 harness connectors.
Measure the resistance between the TRS 5 Volt Supply circuit and the TRS MUX
circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the TRS 5 Volt Supply circuit for a short to the TRS MUX
circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
438
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Transmission Range Sensor harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Measure the resistance between ground and the TRS 5 Volt Supply circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the TRS 5 Volt Supply circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and configure the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
439
INSTRUMENT CLUSTER
PRNDL SWITCH INPUT CIRCUIT SHORTED (DIESEL ONLY) —
Continued
Symptom List:
VIN CHECKSUM ERROR
VIN PREVIOUSLY STORED
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be VIN CHECKSUM ERROR.
When Monitored and Set Condition:
VIN CHECKSUM ERROR
When Monitored:
With the ignition on.
Set Condition:
Once the Instrument Cluster learns a valid VIN and another valid VIN is
transmitted on the bus. The Instrument Cluster decodes the VIN that is transmitted on
the bus by the PCM. If the VIN is valid the Instrument Cluster stores the information. If
the VIN information does not equate to the encrypted value then the fault is set.
VIN PREVIOUSLY STORED
When Monitored:
With the ignition on.
Set Condition:
Once the Instrument Cluster learns a valid VIN and another VIN is
transmitted on the bus. This code can only be set if a PCM or MIC has been exchanged or
9swapped9 from another vehicle. The VIN is embedded in both the cluster and the PCM and
cannot be used in any other vehicle.
POSSIBLE CAUSES
POWERTRAIN CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
NOTE: The V.I.N. is embedded into the Instrument Cluster memory during
production and can not be modified. Do not attempt to
(swap( a cluster from
one vehicle to another. Refer to the Instrument Cluster Caution in the
Service Information.
NOTE: This code will only be set if the PCM has been exchanged or
(swapped( into this vehicle from another.
If any components have been exchanged or
9swapped9, reinstall the original parts.
With the DRBIII
t, erase DTCs.
Cycle the ignition.
With the DRBIII
t, read DTCs.
If this code resets, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
440
INSTRUMENT CLUSTER
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