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viper 4806v and aftermarket immobilizer


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eanema 
Member - Posts: 6
Member spacespace
Joined: April 13, 2015
Location: Manitoba, Canada
Posted: April 26, 2015 at 3:44 PM / IP Logged Link to Post Post Reply Quote eanema
Hi folks,
I have installed a viper 4806v into a 1998 Toyota 4rummer with an aftermarket immobilizer installed. I had a bit if a problem with the manual transmission mode but I got that all figured out. Now I am having a hard time with the immobilizer. The remote start cranks but because if the immobilizer it won't start (unless a fob has been left by the ignition)
I followed all the wires from the immobilizer and there are three spots where a wire has been cut and then both sides have been run into the immobilizer: the starter, what I assume is the fuel pump line and something else that is behind the fuse box. The starter is already bypassed correctly but the other two disconnections are. It bypassed. To test I shirted the wires back together , removing the immobilizer and everything works good.
The last bit of information I have is there is a single wire coming from the immobilizer that was connected to the previous remote start module that I was replacing. It was connected to a terminal labeled "ground out" in tried grounding this to defeat the immobilizer but it didn't effect it.
My question is this: I can take two relays and connect them up to short the cut wires back together when the remote start is active, but I was hoping for a bit more elegant solution.
Does anyone have any better ideas?
Is there supposed to be some sort of defeat option on an immobilizer? How does it normally work?
eanema 
Member - Posts: 6
Member spacespace
Joined: April 13, 2015
Location: Manitoba, Canada
Posted: April 26, 2015 at 3:45 PM / IP Logged Link to Post Post Reply Quote eanema
FYI, the aftermarket immobilizer is an autowatch autoguard
tedmond 
Gold - Posts: 4,610
Gold spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: January 06, 2007
Location: Ontario, Canada
Posted: April 26, 2015 at 6:04 PM / IP Logged Link to Post Post Reply Quote tedmond
you shouldnt have to do that. if you power the wire that exits the unit to the starter wire in the car (away from ignition) it should work fine.
Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
eanema 
Member - Posts: 6
Member spacespace
Joined: April 13, 2015
Location: Manitoba, Canada
Posted: April 26, 2015 at 6:48 PM / IP Logged Link to Post Post Reply Quote eanema
The immobilizer is switching three key wires in the system, not just the starter. The remote start bypasses the starter circuit (and the clutch switch) already, but I need to bypass the fuel pump and the unknown disconnection. If all three haven't been bypassed the vehicle does not start.
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: April 27, 2015 at 5:33 AM / IP Logged Link to Post Post Reply Quote howie ll
Use the NEG ignition output at H21,(pink) add relay take that wire to 85
Ignition POS input to 86.
12V+ constant, fused 20 amps to 87 and output as Ted described to the third circuit.
Diode 1N4004 across the relay coil (85 and 86), band side to 86.
The immobiliser at a guess bypasses starter, ignition and fuel pump.
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: April 27, 2015 at 5:39 AM / IP Logged Link to Post Post Reply Quote howie ll
Of course if the 4806 has H3 violet and green, starter cut, you can always remove the immobiliser, I always do that with aftermarket units although the South African Watchdog is one of the better immobilisers.

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