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WIRING PAGE
Current wiring notes (note, connector names from bentley manual):
- T2f (black connector by master cyl) R/Y should be fed to VEMS FP output
- PIN 15 on EC36
- T2f (black connector by master cyl) R/W should be fed to O2 sensor heater AND fuel injector power supply
- pin 3 on LS4U is heater supply
- Is running injection supply off of this source also going to be too much?
- Who knows! add 10a inline fuse if this ends up being supply for o2 and injection
- T3d (white connector by master cyl) black should feed VEMS +12v
- Pin 25 on EC36
Note: coolant bottle is removed for viewing.
Close up
- The top connector is a 2 pin mystery connector.
- Green and violet/black on the engine harness side (left).
- Green and blue on the main harness side (right).
- Green was for #50 starter trigger. Digifant needed it, VEMS doesn't.
- The middle connector is T3d per the Bentley manual in the 16v engine section.
- black on engine harness side and engine harness side
- Switched +12v
- Two wires from one pin, one wire from another pin on engine side (left)
- One loopback on main harness side (right) to power additional pin
- Red/black on engine harness side and main harness side
- This is off the starter relay...it's only powered when the starter is cranking...
- black on engine harness side and engine harness side
- The bottom 2 pin connector is T2f (the black connector)
- Red/yellow on both sidse
- From fuel pump relay output - route to ECU to allow priming.
- Red/White
- +12v switched that originally powered O2...will be used for that again.
- Red/yellow on both sidse
VEMS Harness
Here I will try to describe the harness I am creating.
WIRES - Greens are ground
EC36
- Coolant Temperature Sensor
- Orange
- Pin 14 on EC36
- Green
- Direct to ground
- Orange
- Intake Air Temperature Sensor
- Grayblue
- Pin 2 on EC36
- Green
- Direct to ground
- Grayblue
- Throttle Position Sensor
- Yellow for +5v
- Pin 28 on EC36
- Pink for ECU input
- Pin 1 on EC36
- Green
- Direct to Ground
- Need to find plug layout
- Yellow for +5v
- Wasted Spark Coil
- Red for +12v
- dark gray coil driver 00
- Pin 35 on EC36
- light gray coil driver 01
- Pin 33 on EC36
- ground (if pin 4 is really a ground) so need to find plug layout
- Crank Position Sensor
- Purple
- Pin 27 on EC36
- Green
- Direct to ground
- This sensor has 3 pins. On the ABA jetta diagram
- one goes to ground (resistance to other 2 pins > 2 MOhm, right ? if so, this is shield GND)
- two go to the ECU. Resistance between the latter two is .... Ohm in both directions (I expect something like 450..900 Ohm).
- Response to Marcell: Yes you are exactly right. Pin 3 (see diagram below of G28 which is crank sensor) shows no continuity between the other two pins. Pins 1 and 2 show about 554 ohms. And this means...?
- Purple
- Fast Idle
- Red for +12v
- Beige to ECU
- Pin 3 on EC36
- VW ISV have 3 pins. Looks like the Corrado G60 ISV only uses 3 pins. ISV connector pin 3 for power, pin 1 to ECU.
- Fuel injectors
- Red for +12v all the way through flyback
- Pin 23 on EC36
- black - injector driver A
- Pin 7 on EC36
- blue - injector driver B
- Pin 19 on EC36
- white - injector driver C
- Pin 8 on EC36
- yellow - injector driver D
- Pin 20 on EC36
- Red for +12v all the way through flyback
- ECU
- Red for +12v
- Pin 25 on EC36
- Black for ground
- Pin 26 on EC36
- Red for +12v
EC18
- Knock Sensor
- Blue for ECU signal
- Pin3 on EC18
- Green for ground EC18 pin 2
- I think pin 1 on knock plug goes to the ECU and 2 and 3 are both ground
- Blue for ECU signal
- WBo2
- Red for +12v
- Yellow, blue, black, white for rest - pins 7,9,13,18 on EC18
- MembersPage/PhatBob/UserGuide has a layout of the wbO2 plug
- Misc ECU Grounds
- Green
- Pins 5, 21, 32 on EC36, pin 2 EC18??- the diagram shows these to tie into the sensor grounds. I think I'll just leave them as individual wires and ground them at the same places.
- Green
Diagram of crank speed sensor (G28)
Oh what does the dotted line loop around the wires from pins 1 and 2 that has the line from pin 3 mean?
