Description And Operation: Notes
DESCRIPTION
The power lock system can contain the following components:
| 1. | Refer to REMOTE KEYLESS ENTRY (RKE) . |
| 2. | Refer to INSTRUMENT PANEL CLUSTER . |
| 3. | Refer to UCONNECT® TOUCH SCREEN - RRM . |
| 4. | Refer to POWER LOCK SWITCH . |
| 5. | Refer to SMART HANDLE . |
| 6. | Refer to POWER LOCK MOTOR . Refer to AJAR SWITCH - Integrated into the latch. |
| 7. | Refer to LOW FREQUENCY ANTENNA . |
| 8. | Refer to FUEL LID MOTOR . |
| 9. | Refer to RADIO FREQUENCY HUB (RFH) . |
| 10. | Refer to BODY CONTROL MODULE (BCM) . |
| 11. | Refer to AJAR SWITCH - Plunger Switch. |
| 12. | Refer to AJAR SWITCH - Hood Latch. |
| 13. | Refer to ELECTRONIC STEERING LOCK (ESL) . |
| 14. | Refer to KEYLESS IGNITION NODE (KIN) . |
| - | Refer to HORN . |
OPERATION
Remote Keyless Entry Operation
The RKE system uses non-switched battery current received through a fused B(+) fuse so that the system remains operational regardless of the ignition switch position. The BCM is the primary RKE system controller as well as the Radio Frequency (RF) RKE receiver. The BCM validates the vehicle access code of each RKE transmitter from which it receives RF signal inputs. It ignores requests from any transmitter for which it has no stored vehicle access code. When the BCM receives an input from a valid transmitter source, it uses internal programming to provide the appropriate hard wired outputs to invoke the proper RKE system features and responses.
The RKE system circuits and transmitter inputs are continually monitored by the BCM. When the BCM monitors a problem in any of the RKE system circuits or transmitters, it stores a DTC in its memory circuit.
Passive Entry System Operation
In the Passive Entry Keyless Go (PEKG) system the doors are unlocked passively; however, they must still be locked actively after exiting the vehicle using the tactile Lock button on either front door smart handle. When the system senses a hand approaching the capacitive switch in the door Smart handle pull or detects a button press of the liftgate release switch, it sends out challenge messages through the Low Frequency (LF) antennas to authenticate the presence and location of a valid FOBIK.
The FOBIK responds by sending a Very High Frequency (VHF) message back to the receiver within the RFH. If the RFH determines the FOBIK is valid and that it is located outside the vehicle in the same zone or vicinity as the door handle or liftgate switch being activated, it sends an electronic Unlock Request message over the Controller Area Network (CAN) data bus to the BCM to automatically unlock and allow entry.
The PEKG system circuits and FOBIK inputs are continually monitored by the software contained within the RFH. When the RFH monitors a problem in any of the PEKG system circuits or FOBIK inputs, it stores a Diagnostic Trouble Code (DTC) in its memory circuit.