Dodge Ram Truck 1500-2500-3500. Manual — part 383
*SEAT BELT WARNING INDICATOR ALWAYS ON - STANDARD CAB
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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
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*SEAT BELT WARNING INDICATOR ALWAYS ON - STANDARD CAB (CONTINUED)
For the Instrument Cluster circuit diagram (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - SCHEMATICS
AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
Possible Causes
(F983) FUSED IGNITION SWITCH OUTPUT (RUN-ACC) CIRCUIT OPEN
(Z951) SEAT BELT SWITCH GROUND CIRCUIT OPEN
(G10) SEAT BELT SWITCH SENSE CIRCUIT OPEN
SEAT BELT TENSIONER REDUCER
SEAT BELT SWITCH
INSTRUMENT CLUSTER
1.
(F983) FUSED IGNITION SWITCH OUTPUT (RUN-ACC) CIRCUIT OPEN
Turn the ignition off.
Disconnect the Seat Belt Tensioner Reducer harness connector.
Turn the ignition on.
Measure the voltage between the (F983) Fused Ignition Switch Output
(Run-Acc) circuit and ground in the Tensioner Reducer harness con-
nector.
Is the voltage above 10.5 volts?
Yes
>> Go To 2
No
>> Repair the (F983) Fused Ignition Switch Output (Run-Acc)
circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
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*SEAT BELT WARNING INDICATOR ALWAYS ON - STANDARD CAB (CONTINUED)
2.
SEAT BELT TENSIONER REDUCER
Ensure that the Seat Belt Tensioner Reducer harness connector is
connected.
Measure the voltage between the (G10) Seat Belt Switch Sense circuit
and ground in the Seat Belt Tensioner Reducer harness connector
(cavity 2).
Is there any voltage present?
Yes
>> Go To 3
No
>> Replace the Seat Belt Tensioner Reducer in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
3.
SEAT BELT SWITCH
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Connect a jumper wire between cavity 1 and cavity 2.
Turn the ignition on.
Observe the Seat Belt Warning Indicator.
Did the Seat Belt Warning Indicator illuminate?
Yes
>> Replace the Seat Belt Switch in accordance with the Ser-
vice Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
No
>> Go To 4
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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
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*SEAT BELT WARNING INDICATOR ALWAYS ON - STANDARD CAB (CONTINUED)
4.
CHECK THE (Z951) SEAT BELT SWITCH GROUND CIRCUIT FOR AN OPEN
Turn the ignition off.
Measure the resistance between ground and the (Z951) Seat Belt
Switch circuit.
Is the resistance below 5.0 ohms?
Yes
>> Go To 5
No
>> Repair the (Z951) Seat Belt Switch Ground circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
5.
CHECK THE (G10) SEAT BELT SWITCH SENSE CIRCUIT FOR AN OPEN
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance of the (G10) Seat Belt Switch Sense circuit
between the Seat Belt Switch connector and the Instrument Cluster C3
connector.
Is the resistance above 5.0 ohms?
Yes
>> Repair the (G10) Seat Belt Switch Sense circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
No
>> Replace and configure the Instrument Cluster in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
DR/DH
INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
8J - 95
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