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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 | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Driver Seat Belt Switch Signal | 1 | 2 | 2 | -- |
Driver Seat Belt Indicator Control | 1 | 2 | 2 | -- |
Driver Seat Belt Switch Ground | - | 2 | 2 | -- |
1. Driver Seat Belt Indicator Always Illuminated 2. Driver Seat Belt Indicator Inoperative |
For vehicles equipped with the driver and passenger airbags, the driver seat belt switch will supply a ground for the seat belt indicator when the seat belt is unbuckled causing that indicator to illuminate.
For vehicles equipped with the driver airbag only, the driver seat belt switch supplies a ground to the SDM when the seat belt is buckled. When the driver is unbuckled, the seat belt switch opens removing the ground to the SDM. The SDM will then supply voltage to the seat belt indicator which will then cause that indicator to illuminate.
Seat Belt System Description and Operation
Control Module References for scan tool information
⇒ | If the values do not change, refer to Seat Belt Switch Malfunction (With RPO AJ3). |
⇒ | If the indicator is always ON or always OFF, refer to Driver Seat Belt Indicator Malfunction (With RPO AJ3). |
⇒ | If the indicator is always ON or always OFF, refer to Seat Belt Switch Malfunction (Without RPO AJ3). |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the K36 SDM. |
⇒ | If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K36 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 K36 SDM |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM. |
⇒ | 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 K36 SDM. |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the seat belt indicator is ON, test the control circuit terminal 2 for a short to ground. If the circuit tests normal, replace the P16 instrument cluster. |
⇒ | If the seat belt indicator is OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the P16 instrument cluster. |
⇒ | If not the specified value, replace the B153D driver seat belt buckle. |
⇒ | If greater than the specified range, replace the B153D driver seat belt buckle. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for the instrument cluster and SDM replacement, setup, and programming |
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