DESCRIPTION
The HomeLink® transceiver for this vehicle is integral to the Remote Compass Module (RCM) and is sometimes referred to as an Electronic Overhead Module (EOM) located in the front overhead console. The only visible component of the HomeLink® transceiver are the three push buttons (4). The buttons are marked with one, two or three dots, respectively, for identification of each channel.
Scheme 361
Each of the HomeLink® transceiver push buttons controls an independent radio transmitter channel. Each of these three channels can be trained to transmit a different radio frequency signal for the remote operation of garage door openers, motorized gate openers, home or office lighting, security systems or just about any other device that can be equipped with a radio receiver in the 286 to 399 Megahertz (MHz) frequency range for remote operation. The HomeLink® transceiver is capable of operating systems using either rolling code or non-rolling code technology. For information on programing, refer to Standard Procedure .
The HomeLink® transceiver cannot be repaired, and is only available for service as part of the EOM. This unit includes the electronics and push button switches for the HomeLink® transceiver, the electronics for the Remote Compass Module (RCM) and the plastic module case. For service information, refer to MODULE, Compass , Removal and MODULE, Compass , Installation .
OPERATION
The HomeLink® transceiver receives battery feed through the Ignition Off Draw (IOD) fuse circuit of the vehicle. It operates on a non-switched source of battery current so the unit will remain functional, regardless of the ignition switch position. It can learn and store three separate transmitter radio frequency codes to operate garage door openers, security gates and security lighting. The Electronic Vehicle Information Center (EVIC) display provides visual feedback to the driver, showing which transmitter button is pressed. The system will not send operating signals if the vehicle theft security alarm is armed. This prevents a perpetrator from breaking into a vehicle parked outside a home and using the HomeLink® transceiver system to enter the home.
Scheme 362
If the HomeLink® transceiver is inoperative, but the Electronic Vehicle Information Center (EVIC) Vacuum-Fluorescent Display (VFD) is operating normally, for instructions on training the HomeLink® transceiver, refer to Standard Procedure . Retrain the HomeLink® transceiver with a known good hand held transmitter as instructed and test the HomeLink® transceiver operation again. If the unit is still inoperative, test it with the Radio Frequency Detector special tool (special tool #9001, Rf Detector) as described below
- Turn the Radio Frequency (RF) Detector™ will sound and the green power Light Emitting Diode (LED) indicator will light. If the green LED does not light, replace the battery.
- Hold the RF detector within one inch of the TRAINED HomeLink® transceiver and press any of the transceiver buttons.
- The red signal detection LEDs will light and the tool will beep if a radio signal is detected. Repeat this test for each button. If any button is inoperative, replace the Electronic Overhead Module (EOM) module.
For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.