Honda Civic Service Manual page 2041

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Keyless Entry Does Not Work ln Any
Mode
NOTE: Before beginning, verify that all the
transmitters are programmed to the vehicle.
1. ls the vehicle equipped with the optional security
system?
Yes - Go to the next steD.
No -
Go to step 3.
2. Does lhe keyless entry work correctly when the
security control unit connector is disconnected?
Yes - Faulty security system, go to security
system for f urther lroubleshooting.
No -
Go to the next steo.
3. Does the transmitter LED come on when anv of
the buttons are pressed?
Yes - Go to step 6.
No -
Go to the next step.
4. ls the transmitter battery installed with the
positive side facing up?
Yes - Ensure that the battery contact tabs are
repositioned, then replace the battery.
Remove the key trom the ignition, then
close the doors and trunk. Press the
LOCK button on the transmitter six times,
then go to the next step.
No -
Ensure that the battery contact tabs are
repositioned, then reinstall the battery
correctly. Then reprogram the transmitter
and retest it. Use the procedure on page
1 30-1 4 for transmitter programming.
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1 3 0 - 1 7
7.
Does the transmitter LED come on when anv of
the buttons are oressed?
Yes - Go to the next steo.
No -
Replace the transmitter and program it by
using the procedure on page 130-14.
Does the system work properly in all modes?
Yes - Finished. The system is OK.
No -
Go to the next step.
Recheck with a known good transmitter
reprogrammed
to the vehicle. Does the system
work properly in all modes?
Yes - Replace the transmitter and program it by
using the procedure on page 130-14.
No -
Replace the keyless door lock control unit.