Passenger Presence System Indicator Circuit Malfunction
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Passenger Presence System Indicator Circuit Malfunction
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Passenger Air Bag OFF Indicator Control
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2
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2*
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2
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-
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Passenger Air Bag ON Indicator Control
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5
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3*
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4
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-
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Center Console Multifunction Switch Ground
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-
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1
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1
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-
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1. Both indicators always OFF
2. The OFF indicator will not illuminate
3. The ON indicator will not illuminate
4. The OFF indictor always ON
5. The ON indicator always OFF
* High resistance may cause the appropriate indicator to illuminate less bright than normal
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Circuit/System Description
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The passenger air bag ON/OFF indicators are used to notify the driver when the passenger presence system has enabled or disabled the I/P inflator module. When the ignition is turned ON, the ignition voltage is supplied to the passenger presence system module. When the sensing and diagnostic module (SDM) receives the appropriate serial data message from the passenger presence system the SDM will then provide voltage to the appropriate indicator.
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for scan tool information
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Circuit/System Verification
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Note
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The ON and OFF indicators for the passenger airbag cannot work as intended if there are also supplemental airbag DTCs. Repair all supplemental airbag DTCs before continuing with this fault diagnosis.
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1.
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Ignition ON, with the passenger seat unoccupied, verify the scan tool Passenger Seat Occupancy Status parameter is Empty Seat.
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2.
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With the passenger seat unoccupied, verify the passenger air bag OFF indicator is illuminated.
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3.
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With the passenger seat occupied, verify the scan tool Passenger Seat Occupancy Status parameter is Occupied.
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4.
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With the passenger seat occupied, verify the passenger air bag ON indicator is illuminated.
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Note
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When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
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•
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Inflatable restraint passenger air bag on/off indicator.
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•
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Inflatable restraint passenger air bag on/off indicator wiring harness.
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1.
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Ignition OFF, disconnect the X1 harness connector at the center console multifunction switch.
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2.
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Test for less than 1 Ω between the ground circuit terminal 2 and ground.
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3.
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If greater than the specified range, test the ground circuit for an open/high resistance.
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4.
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Ignition ON, with the passenger seat occupied, verify that a test lamp does not illuminate between the control circuit terminal 3 and ground.
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5.
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If the test lamp is illuminated, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM
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6.
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With the passenger seat unoccupied, verify that a test lamp illuminates between the control circuit terminal 3 and ground.
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7.
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If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the SDM.
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8.
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With the passenger seat unoccupied verify that a test lamp does not illuminate between the control circuit terminal 1 and ground.
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9.
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If the test lamp is illuminated, test the control circuit for a short to voltage. If the circuit tests normal replace the SDM.
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10.
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With the passenger seat occupied verify that a test lamp illuminates between the control circuit terminal 1 and ground.
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11.
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If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the SDM.
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12.
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If all circuits test normal, replace the center console multifunction switch.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for SDM replacement, setup, and programming
