TROUBLESHOOTING [KEYLESS ENTRY SYSTEM]
KEYLESS ENTRY SYSTEM PRELIMINARY INSPECTION
• Perform the following preliminary inspection before troubleshooting.
STEP
INSPECTION ACTION
1
• Is the system an after-market one?
Yes
Perform troubleshooting according to after-market
keyless entry system manual.
No Go to next step.
2
• Did customer activate keyless entry system
when ignition switch was in LOCK position?
Yes
Go to next step.
No
Explain to customer that system does not work when
ignition switch is in ON position.
Turn ignition switch to LOCK position, 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
non-interference 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.
(See S-37 ON-BOARD DIAGNOSTIC
FUNCTION)
• Does on-board diagnostic function work?
Yes Go to next step.
No
Go to Step 1 of troubleshooting NO. 1.
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. 2.
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