Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

No Horn Chirp When Activated





DOORS WILL LOCK WITH THE TRANSMITTER BUT THERE IS NO HORN CHIRP.

(1) Press horn button, listen horn sound.

(2) If the horn does not CHIRP, check the horn relay and the horn(s). Repair as necessary

(3) Using a voltmeter, check Pin 7 of the black connector for voltage pulse. Press the lock button on the transmitter.

(4) If no voltage pulse measured, replace the receiver. If voltage is measured, repair harness to the horn relay.