Car: US Spec 2001 Toyota Avalon XLS with Factory Security
RES: Viper 4806V and 556U Bypass Module
Wiring is detailed below the post.
What doesn't work:
HVAC has no power when remote start is used. When remotely started, as soon as the key is inserted, the engine dies and the remote start points to a brake input as the cause.
History:
I carefully researched the wiring tables for my car for hours prior to installing, including the listing found here and on several other sites. I removed the un-used wires on the RES harnesses by de-pinning them to prevent any confusion and clean up the install.
I installed the 5-wire lock/unlock system with a relay in the driver's door and everything works well.
What works:
Horn, locks, parking lights and AUX (trunk) output function as they should. Vehicle will lock/unlock, remote start and remote shut down. Brake press will shut down engine. Hood switch will prevent start if hood is open. Everything functions normally when using a key. Factory alarm arms/disarms with lock/unlock and during RES.
Other notable behavior:
During a RES, if the two conductor lead that contains the RED / YEL key sense wire is disconnected from the ignition cylinder, I can insert the key and successfully drive away. I can also start the car normally and then activate the RES allowing me to remove my key and exit the vehicle while still running.
Testing I've done:
Verified all wiring below matches my install. If the RED / YEL key sense wire is given a ground while RES is running the car, the engine dies - exact same behavior as if key is inserted. I've also run pin 2 of the RES harness to 12V constant with no behavior change.
At this point I'm stuck and desperately ask for expert assistance. What am I doing wrong?
Thanks!
Remote Start 8 Pin Harness:
[PIN #] - [RES Description] - [RES Color] : [Car Description] - [Car Color]
1 - 12V Constant - RED / BLK : 12V Constant - WHT/BLU
2 - REMOVED 87a of Flex Relay - *See testing above
3 - Ignition 2 - PNK/WHT : Ignition 2 - WHT/RED (Smaller Gauge of the two)
4 - 12V Constant - RED : 12V Constant - WHT/BLU
5 - Starter Output - VIOLET : Starter - BLK/WHT
6 - 12V Accy Output - ORG : 12V Accy - WHT/GRN
7 - 12V Constant - RED / WHT : 12V Constant - WHT/BLU
8 - Ignition I/O - PNK : Ignition - BLK/ORG
Main 6 Pin Harness:
1 - 12V Constant - RED : 12V Constant - WHT/BLU
2 - Ground - BLK : Chassis Ground
3 - Horn - BRN : Horn - GRN/BLK
4 - REMOVED Light Insol. WIre
5 - Parking Lights - WHT : Parking Lights - PNK
6 - REMOVED Ground When Armed
Aux/Shutdown 24 Pin Harness
1 - REMOVED Ignition 2 (low) Output
2 - Defroster (low) BLU/WHT : Defroster Relay - RED / BLK
3 - Trunk (low) - RED / WHT : Trunk Relay - BLU
4 - REMOVED Dome Light
5 - RES Output (low) - DRK BLU : 556U Bypass Input - BLU
6 - REMOVED AUX 3
7 - REMOVED AUX 1
8 - REMOVED AUX 4
9 - Hood Pin - GRY : Hood Pin - BLK
10 - Horn Input - BLU : Horn - GRN/BLK
11 - REMOVED Activation Input
12 - Tach - VIOLET/WHT : Tach - BLK
13 - Ground - BLK/WHT : Chassis Ground
14 - REMOVED Factory Alarm Disarm
15 - (-) Door Input - GRN : Door Switch - RED / BLU
16 - EMPTY
17 - REMOVED Ignition Output (low)
18 - REMOVED (+) Door Input
19 - REMOVED AUX 2
20 - Brake Shutdown - BRN : Brake - GRN/WHT
21 - REMOVED Starter Output (low)
22 - REMOVED Wait to Start (low)
23 - REMOVED Accy Output (low)
24 - REMOVED Alarm Arm Output (low)
On the car side - key sense (RED / YEL) is currently un-tapped as it prevents RES. See testing notes above.