Horn Does Not Sound With Lock Verification Or When Panic

ALARM IS ACTIVATED FROM REMOTE TRANSMITTER

1. Check operation of panic alarm with all remote transmitters. If horn will not sound with all remote transmitters, go to next step. If horn sounds with some remote transmitters but not with all, reprogram malfunctioning remote transmitter(s). See REMOTE TRANSMITTER  under PROGRAMMING. If malfunctioning transmitter(s) still do not operate after reprogramming, replace remote transmitter(s). Retest system.
2. Check horn operation by pressing horn switch. If horn operates, go to next step. If horn does not operate, repair horn, then retest system.
3. Measure voltage by backprobing door lock control module connector C335 terminal No. 13 and ground while pressing PANIC button on remote transmitter. See Figure . If voltage is greater than 10 volts with PANIC button pressed, repair Dark Blue wire, then retest system. If voltage is less than 10 volts with PANIC button pressed, replace door lock control module, then retest system.