Circuit Description
When you first turn the ignition switch to the ON position, the inflatable restraint Sensing and Diagnostic Module (SDM) performs tests to diagnose critical malfunctions within itself. The SDM monitors the voltages at PASSENGER SEAT LOW terminal 1 to calculate the combined resistance of the passenger seat module and its associated wiring.
Conditions for Setting the DTC
The SDM detects low resistance in the passenger seat deployment loop.
Action Taken When the DTC Sets
| • | The SDM sets a Diagnostic Trouble Code. |
| • | The SDM flashes the AIR BAG warning lamp. |
Conditions for Clearing the DTC
All DTCs are cleared with each ignition cycle.
Test Description
-
This test checks for a short between the inflatable restraint passenger seat module high and low circuits.
-
This test determines if the malfunction is caused by the SDM.
-
This test determines if the malfunction is caused by the inflatable restraint passenger seat module.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the SIR Diagnostic System Check performed? | -- | ||
Is the resistance measured equal to the specified value? | OL (Infinite) | |||
Is DTC 43 present? | -- | |||
Is DTC 43 present? | -- | |||
5 | Replace the inflatable restraint Sensing and Diagnostic Module (SDM). Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . Are all repairs complete? | -- | -- | |
6 | Replace the inflatable restraint passenger seat module. Refer to Inflatable Restraint Seat Module Replacement - Passenger . Are all repairs complete? | -- | -- | |
7 | Repair the IP wiring harness between the passenger seat module and the SDM. Refer to Wiring Repair . Are all repairs complete? | -- | -- | |
8 | An intermittent exists in the passenger seat deployment loop. Refer to diagnostic aids. Are all repairs complete? | -- | -- | |
9 | Reconnect all SIR components. Make sure all components are properly mounted. Have all the SIR components been reconnected and properly mounted? | -- | -- |
