Keyless Entry System Preliminary Inspection [Keyless Entry System]
- Perform the following preliminary inspection before troubleshooting.KEYLESS ENTRY SYSTEM PRELIMINARY INSPECTION CHART
STEP INSPECTION ACTION 1 - Is system an after-market one?
Yes Perform troubleshooting according to after-market keyless entry system Service Information. No Go to next step. 2 - Did customer activate keyless entry system when the ignition is switched to off?
Yes Go to next step. No - Explain to customer that system does not work when the ignition is switched to ON.
- Switch the ignition to off, then go to next step.
3 - Did customer use keyless entry system in particular area, such as being near TV towers, power plants, power lines, or factories?
Yes Attempt to lock/unlock doors with transmitter in noninterference area. If system operates:
- Area of operation is bad. Explain effect of outside interference on transmitter to customer.
If system does not operate:
- Go to next step.
No Go to next step. 4 - Are any of the following after-market electrical parts on the vehicle?
- Cellular phone
- Radio-wave equipment
- Remote engine starter
- TV, etc.
Yes Disconnect after-market electrical part connectors and attempt to lock/unlock doors with transmitter. If system operates:
- After-market electrical parts are interfering with keyless entry system.
If system does not operate:
- Go to next step.
No Go to next step. 5 - Perform on-board diagnostic function.
- Does on-board diagnostic function work?
Yes Go to next step. No - Go to Step 1 of NO. 1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE.
- Go to Step 1 of NO. 2 ALL ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE.
6 - Attempt to reprogram transmitter ID code.
- Can transmitter ID code be reprogrammed?
Yes System is normal now. No Go to Step 1 of troubleshooting NO. 3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED.