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
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