Megasquirt 3x 2rz and 3rz wiring diagram

The following diagram is for a 2000 model 2rz (twin coil type).   Wasted Spark, Sequential Injection.  It assumes use of an LC-1 Wideband.  The power up of the MS unit and control of the fuel pump is particular to the 1985-1988.5 Truck and 4runner:

Megasquirt 3 only – IE Megasquirt 3 with the MS3X board.  DIYAutotune colors, except where marked.   Components such as cam and crank sensor have indicators of factory wire color (1998-2000 2rz)

Click to Enlarge:

2000_2RZ_1988_4RUNNER_WIRING_MS3X

Click to enlarge – Tentative Diagram 4/12/2015

 

 

 

 

Here are MS3X wiring colors:

Megasquirt pin out and function MS3 / MS3X (not all are used – DIYAutotune colors)

ms3x-harness_colors

 

MS3 primary connector wiring and colors (not all are used DIYAutotune colors):

MS3_Primary_wiring_colors

MS3X Primary wiring harness colors

 

 

 

 

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  1. […] a lot of free support on multiple forums. My plan is to follow the wiring diagram laid out here: http://www.2rzturbo.net/?page_id=613 There will be some minor differences because my truck is coil on plug and theirs was a two coil. […]