Had a chat with Kreg and he helped me out tremendously. His detailed install process were amazing. This is his recommendations.
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This is a bit complicated, so hopefully I can explain it properly.
The APS57E is a nice unit. From the factory is comes set to DBI D2D mode. That is exactly want the FLCAN needs, so set the FLCAN to Installation Mode = DATA ( one blink flash pattern ) and lock it in. Of course the FLCAN must be flashed with the DL TL1 firmware for your Highlander. The FLCAN and APS57E can communicate in full 2 way data mode via the D2D cable, so all the Orange dash lines are valid.
Door Lock, 3-PIN Connector
1 RED (-) Door Lock Output >>> D2D harness
2 GREEN (-) Door Unlock Output >>> D2D harness
4-PIN 2nd Main Harness
1 BLACK Chassis Ground >>> To Highlander frame / chassis ground
2 WHITE/ RED Parking Light Input >>> Ground Chassis ( join with Pin 1 above )
3 YELLOW/BLACK To Controlling Alarm's Ignition Input >>> NC
4 WHITE (-) Parking Light Output >>> headlight switch, white 20 pin plug, pin 18:LT BLUE
14-PIN Main Harness
1 GREEN/ ORANGE Tachometer Input >>> D2D harness
2 GREEN/ YELLOW Glow Plug Input NC
3 DK BLUE (-) Channel 3 Trunk Release Output D2D harness ( Tailgate window release )
4 BROWN / BLACK (+) Inhibit/Shutdown To Brake Switch >>> D2D harness
5 BROWN (+) Inhibit/Shutdown >>> not used
6 GRAY (-) Inhibit Neutral Start Switch >>> not used
7 NA
8 BLACK / YELLOW (-) Pulse During Crank Output >>> to relay for ACC1 circuit
9 BLACK/ RED (-) Pulse After Shut Down Output NC
10 BLACK/ BLUE (-) Pulse Before Start Output NC
11 BLACK/ LT GREEN (-) After Start Output NC
12 LT BLUE (-) Ground While Running Output >>> D2D harness
13 GRAY/BLACK (-) Inhibit/Shutdown To Hood Switch >>> to kit supplies hood pin switch
14 BLACK/ WHITE (-) Horn Output >>> dash fuse box, white 16 pin plug (1D), pin 11:(-) GRAY
Wire Side View Of Connector
1 Blue (Ign 1) Black Ignition1 * also gets FLCAN Pink wire
2 RED / White (+ 12VDC Relays Ign 1 & Ign 2) WHITE/ Black +12V
3 Green (Ign 2)Light Blue thin Ignition2
4 Purple (Accessory) ** Red thin Starter2
5 Red (+ 12VDC Relays ACC & Start) WHITE/ Black +12V
6 Yellow (Starter) Yellow Starter1
The problem is that the Highlander needs 2 Ignition, 2 Starter and one Accessory outputs from the APS57E. As shown above the APS57E is not able to power the Accesory1 circuit during a remote start. To accomplish this you will need a 30/40 Amp SPDT relay wired up like this :
Relay Pin 85 to BLACK / YELLOW ( Pulse During Crank Output) **APS57E programming required
Relay Pins 86 and 87 to +12V constant through 10 Amp fuse
Relay Pin 30 to Light Blue ( thin ) Ignition2
There will be some programming you have to do on the APS57E. Bank 3, 5th Feature should be set to DBI Tach. For the Accesory1 circuit ( ** ), change Bank 3, 20th Feature to "Same as ACCY". To change the APS57E wire from ACCY to Starter2, change Bank 3, 9th Feature to "Same as Starter".
As you can see, to get all the Highlander's ignition circuits powered properly we have :
APS57E to Highlander
IGN1 going to IGN1
IGN2 going to IGN2
Starter1 going to Starter1
We changed the ACC output over to a Starter output and connected that to Starter2. We added a relay controlled by the BLACK / YELLOW wire to power the ACC1 circuit.
Confusing but the only way to do it.
As for the Hood Pin, if you don't have the Factory Alarm system, your Highlander probably doesn't have a Hood Pin and the FLCAN will not be able to supply that signal to the APS57E. This is something you can test for after the install. If opening the hood while remote started does not shutdown the engine, install the APS57E kit supplied hood pin and hard wire that input signal and connect the FLCAN ORANGE / Black wire to chassis ground.
Going with D2D, there is no need to hardwire either Brown or BROWN / Black (+) Inhibit Input. The FLCAN will supply the
Foot Brake signal via D2D, just like it does for Lock, Unlock, Hatch release and Tach.
Kreg
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The RS did had issues picking up the tack during the learning process through DBI. I hardwired it from RS.
1.GREEN/ ORANGE Tachometer Input >>> ODBII Lt Blue and changed Bank 3, 5th feature to Tach.