Captiva |
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• | 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. |
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
---|---|---|---|---|---|
Passenger Seat Belt Switch Signal | 1 | 2 | 2 | 2 | - |
Passenger Seat Belt Switch Low Reference | - | 2 | 2 | 2 | - |
1. Indicator will remain ON with seat belt buckled. 2. Indicator will illuminate only for the bulb check. |
When an individual is sitting in the passenger seat the seat belt reminder sensor detects the individual. A signal to the SDM indicates a person is in the passenger seat. The SDM will turn the passenger seat belt indicator on while someone is seating in the passenger seat. The passenger seat belt switch is a 2-wire switch wired to the inflatable restraint sensing and diagnostic module (SDM) using a signal circuit and a low reference circuit. When the seat belt is unbuckled the switch is closed, and when the seat belt is buckled the switch is open. The SDM sends the status of the passenger seat belt via a serial data message to the instrument panel cluster (IPC). The IPC will then control the illumination of the passenger seat belt indicator.
Seat Belt System Description and Operation
Control Module References for scan tool information
⇒ | If the scan tool does not indicate Occupied, test the seat belt reminder sensor signal circuit and the low reference circuit for an open or short. If the circuits test normal, replace the seat belt reminder sensor. |
⇒ | If the indicator does not illuminate, replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . |
Note: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector. • Seat belt switch • Seat belt switch harness connector • SDM • SDM harness connector
⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the SDM. |
⇒ | If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal replace the SDM. |
⇒ | If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the SDM. |
⇒ | If less than the specified value, replace the seat belt switch. |
⇒ | If greater than the specified range, replace the seat belt switch. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for SDM replacement, setup, and programming |
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