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MembersPage/KoabiBrooks/Wiring (2006-04-20 15:35:48)

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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...
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.

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
  - To analog ground
Intake Air Temperature Sensor
- Grayblue
  - Pin 2 on EC36
- Green
  - To analog ground
Throttle Position Sensor
- Yellow for +5v
  - Pin 28 on EC36
- Pink for ECU input
  - Pin 1 on EC36
- Green
  - To analog ground
- Need to find plug layout
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
  - To analog ground
- Another Green (shield)
  - Also to analog 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).
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
ECU
- Red for +12v
  - Pin 25 on EC36
- Black for ground
  - Pin 26 on EC36 - this goes to analog ground

EC18

Knock Sensor
- Blue for ECU signal
  - Pin3 on EC18
- Green
  - EC18 pin 2 for ground for both signal ground and shield ground
- I think pin 1 on knock plug goes to the ECU and 2 and 3 are both ground
WBo2
- Red for +12v
- Yellow, blue, black, white for rest - pins 7,9,13,18 on EC18

WBo2 plug

MembersPage/PhatBob/UserGuide has a layout of the wbO2 plug
- Yellow, blue, black, white, red (for +12v)

VR crank sensor plug. Note that HALL sensor needs + supply (usually 5V) so it cannot be HALL (=> it is VR) if it has no supply.

Knock Sensor plug

Misc ECU Grounds

Green
- Pins 5, 21, 22, 32 on EC36. These are the "power" grounds and go to the main ground point
- Coilpack will go to the main ground point
Black
- Pin 25 is the analog ground. There will be some ground distro near the ECU that all the sensors will go to. NOTE: This distro IS NOT to be connected to the car ground besides the single wire that connects it to the main ground.
- CLT, IAT, TPS, VR, will go to this ground distro. For VR and both signal ground and shield ground will go to this analog ground. For KS, both signal ground and shield ground will go to EC 18 pin 2 (see KS section above)