Topic: key fob remote
in Forum: C4 Electrical
Thanks in advance,
Dave
"Place your transmitter fob 10 feet or more away from the Corvette coupe or convertible. Get in vehicle and turn the key on, but do not start the engine. Push the Trip/Odo button twice and within 5 seconds, push and hold the Fuel/Info button, until the PKE light comes on and remains on. Turn the ignition key off, but do not remove the key. The PKE light will come on and begin flashing. Now go get the fob and walk toward the Corvette with the fob in your hand. When the receiver module recognizes the PKE fob, the PKE light in your Drivers Information Center (Lower Button Left), will remain on, with no flash.
Remove the key from the ignition, put the fob in your pocket/purse and walk away from the Corvette, and the doors should lock. You will hear a chirp from your horn to verify the locking procedure. Now walk toward the Corvette with the fob in your pocket/purse, the doors will automatically unlock, without touching or pressing the fob buttons. If you are working on your vehicle, or have a passenger whom remains in the vehicle, it is best to disarm the system, otherwise the alarm will sound if a door is opened by the passenger, or the system will cycle lock/unlock while you are near it.
To disarm the system, hold the door button down until you hear the the door locks cycle twice. To rearm, simply do the same procedure. "The secret is the flashing PKE light on the DIC. If it doesn't go out, the fob didn't program.
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I read the diagnostics in the Helm's manual for "will not enter program mode". It is a very simple circuit. The BCM sends a 200ms low pulse to the PKE module to enter programming mode. The chart checks a single wire between the two modules to test for an 'open' in that circuit.
The last test is to short this wire to ground for 3 seconds."Does PKE enter program mode?" Yes = "Refer to Key-in-ignition-switch chart".
This was my thought. Wiring and connectors and modules generally don't cause problems, particularly inside the car. Moving parts do. The ignition switch has contacts in it for the switch that detects that the key is inserted in the lock. If this switch is faulty, the BCM won't know the key is in the ignition, and won't send the "program" signal to the PKE module.
So, does your key buzzer work properly with the driver door open, and key in the ignition? If not (no warning with key in ignition, door open) this is why it won't enter program mode.
It has to be something. Worn key warning ignition switch contacts could be it.
|UPDATED|7/15/2013 8:54:02 AM (AZT)|/UPDATED|
Thanks for the update Dave. Interesting to say the least.
I've had my '94 since last August and had to buy 2 new fobs from GM (which were not cheap).They programed in nicely and have worked great since then, but it does seem that the PKE system can be problematic at times. My passenger door sometimes does not unlock necessitating a reprogram to fix the issue.
G/L with yours and thanks for coming back in to share your info.
......and yes: C4's rule.
C.