User:Saul/soarer
These are my notes for the Toyota Soarer.
Contents
Specifications
The Soarer that I have been working on has the following specifications:
- Right side drive
- Factory manual
- 1JZ Motor
- R154 Gearbox
Speedometer Issue
Wiring
Speed Sensor
The speed sensor is located on the right rear side of the gearbox.
The sensor will not operate without 12v power.
The speed sensor has 3 wires labeled 1, 2 and 3.
- This wire gets 12v feed to it when the key turns.
- This wire connects to ground.
- This wire is the signal output - square wave 4 cycles per wheel turn pulsing from 0v to 12v.
Dash
The 3rd wire from the speed sensor goes into the loom up near the engine through the fire wall down underneath the glovebox and through to behind the dash.
This 3rd wire was blue with a red stripe.
The wire connects to the back of the digital dash - this is where it gets converted to the speed.
The dash has a pink wire the comes out and goes to the main ecu.
Ecu
The ecu uses the pink wire (speed signal from the dash) for traction control.
Be careful as there are two similar pink wires going to the main ecu one is for the fuel pump which appears to output around 12v when the fuel pump is running.
The pink wire (speed signal) may not be needed on some after market ecu's.
Debugging
The following steps may be helpful when debugging a speedometer problem:
