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Passenger Presence System Indicator Circuit Malfunction

Passenger Presence System Indicator Circuit Malfunction

Diagnostic Instructions


Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.


Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Passenger Air Bag OFF Indicator Control

2

2*

2

-

Passenger Air Bag ON Indicator Control

5

3*

4

-

Center Console Multifunction Switch Ground

-

1

1

-

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



Circuit/System Description

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.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference


Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections

Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Note

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.



1. Ignition ON, with the passenger seat unoccupied, verify the scan tool Passenger Seat Occupancy Status parameter is Empty Seat.

2. With the passenger seat unoccupied, verify the passenger air bag OFF indicator is illuminated.

3. With the passenger seat occupied, verify the scan tool Passenger Seat Occupancy Status parameter is Occupied.

4. With the passenger seat occupied, verify the passenger air bag ON indicator is illuminated.


Circuit/System Testing

Note

When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.

Inflatable restraint passenger air bag on/off indicator.

Inflatable restraint passenger air bag on/off indicator wiring harness.



1. Ignition OFF, disconnect the X1 harness connector at the center console multifunction switch.

2. Test for less than 1 Ω between the ground circuit terminal 2 and ground.

3. If greater than the specified range, test the ground circuit for an open/high resistance.

4. Ignition ON, with the passenger seat occupied, verify that a test lamp does not illuminate between the control circuit terminal 3 and ground.

5. If the test lamp is illuminated, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM

6. With the passenger seat unoccupied, verify that a test lamp illuminates between the control circuit terminal 3 and ground.

7. 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.

8. With the passenger seat unoccupied verify that a test lamp does not illuminate between the control circuit terminal 1 and ground.

9. If the test lamp is illuminated, test the control circuit for a short to voltage. If the circuit tests normal replace the SDM.

10. With the passenger seat occupied verify that a test lamp illuminates between the control circuit terminal 1 and ground.

11. 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.

12. If all circuits test normal, replace the center console multifunction switch.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM replacement, setup, and programming