[tfarr]

Ok So I am getting a code 46. Assuming the worst I went to Radio Shack and bought the corresponding resistors and made a resistor pack matching my key. wired it in under the dash. and still no start. Code 46 (PassKey Fault) from the PCM. Any ideas?

1994 Buick Roadmaster Estate.

Thanks in advance

 

[j cat]

Ok So I am getting a code 46. Assuming the worst I went to Radio Shack and bought the corresponding resistors and made a resistor pack matching my key. wired it in under the dash. and still no start. Code 46 (PassKey Fault) from the PCM. Any ideas?

1994 Buick Roadmaster Estate.

Thanks in advance

so you installed the resistor of the same resistance as the key. then you used a key with NO resistor ??? or you used the key with the resistor ?

 

[sippi547]

After you do the by pass it doesnt matter about the key. It no longer reads from the cylinder.

Not being a smartass, but be sure u installed it on the right wires. Meaning after u cut the wires. Be sure you installed the resistor on the harness side and not the cylinder side.

Sent from AutoGuide.com Free App

 

[sippi547]

And you still have to turn the key on and let it learn the resistance of the resistor. The 10 min with the key on or untill the light goes out.

Sent from AutoGuide.com Free App

 

[95wagon]

The only time a 94-96 Passkey II "learns" the the key is the very first time you power up a green module.
( this is why an SEO car can learn zero resistance)
These are not like the later systems that you do the multiple key on for extended periods to go through the relearn when components are replaced.

What they will do is prevent restart for 3 min +- 18 seconds if the wrong resistance was tried

OP , jumping the wiring with a resistor may take the key and column wiring out of the equation but the Vats module, vats relay are still in the equation along with the PCM looking for the signal to enable the injectors.

If you truly want to disable it, you need to disable VATS in the PCM program and ground the signal wire to the Relay

OR, get your hands on a factory service manual and diagnose the problem correctly

 

[sippi547]

Only one key on until the light goes out. Turn the ignition back off and start the vehicle if its done correctly.
But u are correct about other problems that could be in the VATS system besides just the wiring to the cylinder.

Sent from AutoGuide.com Free App

 

[95wagon]

I was replying to you saying it has to learn the key, it does not.
It is "looking" for the resistance value it already learned in 1994 the first time it was powered up .
What ever, semantics.

Fact remains, hanging resistors under the dash, in my mind ,is half assed.

Fix the system , or completely remove it

Original poster, if you PM me your Email , I will scan the pages from my 1995 service manual
Would have to be today as I am gone for a week in a few hours.
Or some one else here could do the same for you.

Gerry

 

[sippi547]

Not half assed if ur fixing the problem. But to each his own. I have done it and it works if done correctly.
Not trying to have a pissing contest, but the resistor is a cheap and easy fix.

Sent from AutoGuide.com Free App

 

[j cat]

I was replying to you saying it has to learn the key, it does not.
It is "looking" for the resistance value it already learned in 1994 the first time it was powered up .
What ever, semantics.

Fact remains, hanging resistors under the dash, in my mind ,is half assed.

Fix the system , or completely remove it

Original poster, if you PM me your Email , I will scan the pages from my 1995 service manual
Would have to be today as I am gone for a week in a few hours.
Or some one else here could do the same for you.

Gerry

I agree with the complete removal. since your relying on the relay and circuit to allow the start. less to go wrong more reliable.