dodge caliber prestige xr6900

Just installed an Audiovox Prestige XR6900 on my Son's Caliber.  I though people might like to know how to handle the strange signals required for remote start.

First the ignition is two rotary switch sections,

We disconnected the ign sw and read the resistors to ground on  the cut "VT/BR" wire,  They are:

The pin 4 of the ign switch ("PK/LB" on pin 4) did put out 12 v in "Run" to the "T.I.P." module, so we used the XR6900 "IGN 1" output to apply 12 v to that circuit (at the T.I.P. module plug C3 pin 12).

The door locks were similar, the common door lock wire that comes out of the driver's door is normally open.  It gets 300 ohms to ground for "Lock", 100 ohms to ground for "Unlock". 

I have not given wire colors, as many of them were wrong in the manual, too bad they were so sloppy with their work, but this is the first year, and it will get straightened out by Chrysler in time.

We are having trouble with the "Tach" signal, it originally worked by being tied to one of the four coils. But the following morning it refused to start, saying "Tach signal is low" by blinking twice when he tried it.  It will warm-start OK, but not when it is cold. 

I just noticed that I need to double-check that "Start" circuit, as the ign sw does have a wire out, but the TIP module doesn't have one in where the manual says it should be.  The manual shows a "Start" wire out of ign sw pin 4 ("PK/LB") to the T.I.P module plug C3 pin 12 (but this T.I.P. pin is empty).  I may have to put the XR6900 "Start" wire on the ign sw "PK/LB" wire anyway, as it probably goes somewhere!.

I will keep everyone posted on my progress.  If you want to help me with the "Tach" signal, that would be appreciated.

Jeff,

Thanks for the reply, it is encouraging.  My Son tried it after stopping for gas after leaving my house and it wouldn't crank.  Then he tried it later, at home and it worked!  Something that I did is marginal.

This RS has a non-tach mode, but it still fails to crank, indicating "Low Tach Signal".  I still think the Caliber electronics is not allowing the crank signal from the RS to crank the car.  I must put indicators on the various RS outputs to prove this...

Jeff,

No, it doesn't flash.  The only diagnostic he gets is the Audiovox unit flashes the parking lights twice, meaning "Low or no tach signal received"

But I have seen the tach signal on the 'scope, and we have tried it three ways, 1. on one coil, 2. on four coils with 10 k iso resistors, and 3. on one injector.

We will see tomorrow morning.  He gets up early, and he will email me right after starting it.

Thanks for the help

Thursday morning, didn't start again. 

So we added the "Key in" signal, driven by the "Bypass control" signal, which comes on for 1 second before "Run".

So we are slill missing the "Acc" signal, and might have the "Open" glitch during switching, but that's the only difference between an operator doing a "key-start" vs. the Remote-Start simulation.  (Except for any switch detecting the operator sitting in his seat... would the Caliber be that sneaky?)

Thanks.

What did you use for the Sentry bypass ? The reason I ask is because most of the new Chrysler/Jeep/Dodge bypass modules have the MUX bypass built into them so all the work is done for you and it's a matter of hooking up only 3 wires on the module + the transponder ring