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Left Curtain Deployment Control 2 (Subfault)
The driver deployment loop consists of the following components:
- A dual-stage inflatable restraint steering wheel module
- The inflatable restraint steering wheel module coil
- The steering wheel module high circuits for both stages 1 and 2
- The steering wheel module low circuits for both stages 1 and 2
There are 2 shorting bars used within the steering wheel module coil connector. These shorting bars short together both stages of the steering wheel module high circuit and the steering wheel module low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during servicing. During a frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop. This flow of current will deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory.
Cause:
Faulty Steering Wheel Module Coil
Steering Wheel Module Coil harness is open or shorted
Steering Wheel Module Coil circuit poor electrical connection
Faulty Steering Wheel Module
Symptoms:
Air Bag Warning Light ON
Left Curtain Deployment Control 1 (Subfault)
The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.
Cause:
Faulty Driver Side Air Curtain
Driver Side Air Curtain harness is open or shorted
Driver Side Air Curtain circuit poor electrical connection
Symptoms:
Air Bag Warning Light ON
Left Side Airbag Deployment Control (Subfault)
The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.
Cause:
Faulty Left Seat Side Airbag
Left Seat Side Airbag harness is open or shorted
Left Seat Side Airbag circuit poor electrical connection
Symptoms:
Air Bag Warning Light ON
Passenger Knee Bolster Deployment Control (Subfault)
NA
Cause:
NA
Symptoms:
Air Bag Warning Light ON
Passenger Frontal Stage 3 Deployment Control (Subfault)
NA
Cause:
NA
Symptoms:
Air Bag Warning Light ON
Passenger Frontal Stage 2 Deployment Control (Subfault)
The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM
Cause:
Faulty Passenger Airbag
Passenger Airbag harness is open or shorted
Passenger Airbag circuit poor electrical connection
Symptoms:
Air Bag Warning Light ON
Passenger Frontal Stage 1 Deployment Control (Subfault)
The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.
Cause:
Faulty Passenger Airbag
Passenger Airbag harness is open or shorted
Passenger Airbag circuit poor electrical connection
Symptoms:
Air Bag Warning Light ON
Collapsible Steering Column Deployment Control (Subfault)
The Restraint Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the Parameter
Cause:
Faulty Deployable Steering Column
Deployable Steering Column harness is open or shorted
Deployable Steering Column circuit poor electrical connection
Faulty Restraint Control Module (RCM)
Symptoms:
Air Bag Warning Light ON
Driver Knee Bolster Deployment Control (Subfault)
The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.
Cause:
Faulty Driver Knee Airbag
Driver Knee Airbag harness is open or shorted
Driver Knee Airbag circuit poor electrical connection
Symptoms:
Air Bag Warning Light ON
Driver Frontal Stage 3 Deployment Control (Subfault)
NA
Cause:
NA
Symptoms:
Air Bag Warning Light ON