Secondary/Configurable Control Schematic Icons
Secondary/Configurable Control Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR DISABLING AND ENABLING . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs
Scheme 1
Scheme 2
| Callout | Component Name |
|---|---|
| 1 | C277 Steering Column Harness to Steering Wheel Harness |
| 2 | Inflatable Restraint Steering Wheel Coil C2 (AOL) |
| 3 | Inflatable Restraint Steering Wheel Coil C1 |
| 4 | Inflatable Restraint Steering Wheel Coil |
| 5 | C201 Steering Wheel Harness to I/P Harness |
| 6 | C221 Steering Wheel Harness to I/P Harness |
| 7 | C277 Steering Wheel Harness to steering Column Harness |
| 8 | Steering Wheel Control Switch Assembly-Upper Right (UK3) |
| 9 | Steering Wheel Control Switch Assembly-Lower Right (UK3) |
| 10 | Steering Wheel Control Switch Assembly-Lower Left (UK3) |
| 11 | Steering Wheel Control Switch Assembly-Upper Left (UK3) |
Scheme 3
| Connector Part Information OEM: 50-57-9404 Service: Not Serviced Description: 4-Way F (BK) |
|---|
| Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit |
Steering Wheel Control Switch Assembly-Lower Left (UK3) Connector & Terminal Parts Information
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | BN | 230 | Instrument Panel Lamps Dimming Control |
| 2 | YE | 1327 | Fuel Signal |
| 3 | D-BU | 894 | Trip Signal |
| 4 | BK | 2250 | Ground |
Steering Wheel Control Switch Assembly-Lower Left (UK3) Terminal Identification
Scheme 4
| Connector Part Information OEM: 50-57-9405 Service: 89046734 Description: 5-Way F (BK) |
|---|
| Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit |
Steering Wheel Control Switch Assembly-Lower Right (UK3) Connector & Terminal Parts Information
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | BN | 230 | Instrument Panel Lamps Dimming Control |
| 2 | D-GN | 1358 | Personalization Signal |
| 3 | OG | 1816 | Select Signal |
| 4 | BK | 2250 | Ground |
| 5 | Not Used |
Steering Wheel Control Switch Assembly-Lower Right (UK3) Terminal Identification
Circuit/System Description
The body control module (BCM) supplies voltage to the audio steering wheel control multiple momentary contact switches and monitors the return signal. Each switch is associated to a set resistance value, when pressed a specific voltage drop occurs through a series of resistors unique to that switch. The BCM identifies the selection, then sends a serial data message that is received by the component controlled, activating the feature.
The body control module (BCM) supplies voltage to the audio steering wheel control multiple momentary contact switches and monitors the return signal. Each switch is associated to a set resistance value, when pressed a specific voltage drop occurs through a series of resistors unique to that switch. The BCM identifies the selection, then sends a serial data message that is received by the component controlled, activating the feature.
Personalization Description and Operation
Personalization features may be set for the vehicle or the driver. Vehicle features do not change with each driver. Specific drivers are recognized by the vehicle through the keyless entry transmitters, the memory buttons, or the driver information center (DIC), and the personalization settings for that driver are recalled.
For more information on vehicle personalization features for this vehicle, refer to Vehicle Personalization .
For more information on driver personalization features for this vehicle, refer to Driver Personalization .
Steering Wheel Controls Description and Operation
The steering wheel control switches duplicate the function of the primary controls of the associated component, through a network of multiple momentary contact switches and a series of resistors. The body control module (BCM) supplies voltage to the switches and monitors the return signal for when a switch is pressed, a specific voltage drop occurs. The BCM identifies the one selected, then sends a serial data message that is received by the component controlled, activating the feature.
This section is intended to diagnosis the circuits between the BCM and the steering wheel control switches. If the primary control for the device is inoperative, refer to the appropriate section for the component the steering wheel control switch is functioning.