Dodge Ram. Manual — part 114
Symptom:
*SEAT BELT WARNING INDICATOR ALWAYS OFF - STANDARD
CAB
POSSIBLE CAUSES
SEAT BELT SWITCH SENSE CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance between ground and the seat Belt Switch Sense circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Seat Belt Switch Sense 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.
453
INSTRUMENT CLUSTER
Symptom:
*SEAT BELT WARNING INDICATOR ALWAYS ON
POSSIBLE CAUSES
SEAT BELT SWITCH
SEAT BELT SWITCH GROUND CIRCUIT OPEN
SEAT BELT SWITCH SENSE CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
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 for approximately 4 seconds and then
turn off?
All
Yes
→ Replace the Seat Belt Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Measure the resistance between ground and the Seat Belt Switch Ground circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Seat Belt Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance of the Seat Belt Switch Sense circuit between the Seat Belt
Switch connector and the Instrument Cluster C1 connector.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Seat Belt Switch Sense 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.
454
INSTRUMENT CLUSTER
Symptom:
*SEAT BELT WARNING INDICATOR ALWAYS ON - STANDARD CAB
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT (RUN-ACC) CIRCUIT OPEN
SEAT BELT TENSIONER REDUCER
SEAT BELT SWITCH
SEAT BELT SWITCH GROUND CIRCUIT OPEN
SEAT BELT SWITCH SENSE CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Seat Belt Tensioner Reducer harness connector.
Turn the ignition on.
Measure the voltage between the Fused Ignition Switch Output (Run-Acc) circuit and
ground in the Tensioner Reducer harness connector.
Is the voltage above 10.5 volts?
All
Yes
→ Go To 2
No
→ Repair the Fused Ignition Switch Output (Run-Acc) circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
Ensure that the Seat Belt Tensioner Reducer harness connector is connected.
Measure the voltage between the Seat Belt Switch Sense circuit and ground in the
Seat Belt Tensioner Reducer harness connector (cavity 2).
Is there any voltage present?
All
Yes
→ Go To 3
No
→ Replace the Seat Belt Tensioner Reducer in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
3
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?
All
Yes
→ Replace the Seat Belt Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
455
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Measure the resistance between ground and the Seat Belt Switch circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 5
No
→ Repair the Seat Belt Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Disconnect the Seat Belt Switch harness connector.
Measure the resistance of the Seat Belt Switch Sense circuit between the Seat Belt
Switch connector and the Instrument Cluster C1 connector.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Seat Belt Switch Sense 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.
456
INSTRUMENT CLUSTER
*SEAT BELT WARNING INDICATOR ALWAYS ON - STANDARD CAB —
Continued
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