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MaxxECU online help

Compatible with MaxxECU STREET/V1/RACE/PRO

 

VANOS engine

This harness is built based on the non VANOS head, which means the VANOS heads CAM/HOME sensor connection is of another type.

 

There is two options to solve the problem if you have a VANOS head:

1.Change the CAM sensor to the one from the non-VANOS engine, BMW artnr 12141726590.

2.Cut the CAM connector in the harness, and replace with a connector that fits and also add switched +12V power supply to the sensor according to the below pinout.

 

 

Pin

VANOS CAM sensor pinout

Non-VANOS CAM sensor pinout

1

+12V

Signal

2

Signal

Sensor GND

3

Sensor GND

Shield

 

 

Harness support

Terminated engine harness

MaxxECU I/O

Note

+12V to injectors, ignition and solenoids

Yes


Cylinder head GND

Yes


OEM generator

Yes


OEM engine starter

Yes


Injectors (Bosch JPT connectors)

INJ


Ignition (VAG 1.8T coil-on-plug)

IGN


OEM intake temperature sensor

IAT


OEM coolant temperature sensor

CLT


OEM throttle position sensor

TPS


OEM idle valve solenoid

GPO 4, 5

Not available on MaxxECU STREET

OEM crank trigger

TRIGGER


OEM CAM trigger

HOME


VANOS solenoid

GPO 3

 

Boost solenoid

GPO 1

(no solenoid included)

Fuel pump control

GPO 2/or use any available output


Engine FAN control

GPO 6/or use any available output


Wideband LSU connector

Yes

LSU 4.2

MAP sensor hose in harness

Yes


 

 

Length

Start

End

Total length

MaxxECU CMC connector

Firewall entry/bushing

850mm

MaxxECU CMC connector

LSU connector

1600mm

MaxxECU CMC connector

IGN 1 coil connector

1950mm

 

 

Harness connectors

clip0495

Injectors - Bosch JPT 2-way

 

 

clip0496

Trigger/HOME - Bosch JPT 3-way

CLT - Bosch JPT 2-way

 

 

clip0497

IDLE solenoid = Bosch JPT 3-way

VANOS solenoid - Bosch JPT 2-way

 

 

clip0498

Lambda - Bosch LSU 4.2 6-way

Boost - Superseal 2-way

 

 

clip0499

Ignition coils - VAG 4-way (COP)

 

 

clip0500

Ignition coils ground <-- DO NOT FORGET TO MOUNT IN CYLINDER HEAD

 

 

Installation

The installation of the terminated engine harness is pretty straight-forward.

1.Mount all engine connectors, alternator and starter, do not forget Engine GND.

2.Place VAG coils (not included) and connect to harness. wired for LONG coils!!!!

3.Drill a 54mm hole in the firewall for harness bushing.

4.Route harness thru firewall and mount MaxxECU. Mounting position is very dependent on engine placement and vehicle model.

5.Connect +12V with external relay (fused with 20A) to the extra 12-pin connector, pin 7 (G).

6.Connect +12V with external relay (fused with 20A) to the extra 12-pin connector, pin 1 (A).

7.Connect engine ground (brown wire) on cylinder head.

8.Connect alternator (pin 12 (M) on 12-pin connector) to +12V ignition (in serial with a charge bulb).

9.Connect starter trigger (pin 6 (F) on 12-pin connector) to start button (+12V).

10.Wire fuel pump, fan, ecu power, ground, alternator and engine starter to 12-pin connector.

11.Wire extra connections like wheel speeds, ethanol sensor etc to 16-pin connector.

 

 

12-pin connector (seen from the wire side)

 

12-pin_connector

Note: Pinout is from the wiring side of the extra connector, not the terminated harness.

 

Pin

Description

1 (A)

+12V ignition coils power supply

2 (B)

Engine ground

3 (C)

GPO 2 (fuel pump)

4 (D)

GPO 6 (FAN)

5 (E)


6 (F)

Engine starter (+12V) - Connect to ignition key or switch

7 (G)

+12V ECU power supply

8 (H)


9 (J)


10 (K)


11 (L)


12 (M)

Alternator

 

 

 

16-pin connector (seen from the wire side)

16-pin_connector

Note: Pinout is from the wiring side of the extra connector, not the terminated harness.

 

 

Pin

Description

Usage

Note

1 (H)

+5V power supply

 

 

2 (G)

INJ 8

Output

Not available on STREET

3 (F)

INJ 7

Output

Not available on STREET

4 (E)

GPO 8/TACHO

0-5V analog input

 

5 (D)

GPO 7/DIN3

Output or digital input

Not available on STREET

6 (C)

GPO 6

Output

Not available on STREET

7 (B)

GPO 3

Output

Parallel connected with VANOS connector

8 (A)

GPO 2

Output

 

9 (S)

CAN L

 

 

10 (R)

CAN H

 

 

11 (P)

AIN 4

0-5V analog input


12 (N)

AIN 3

0-5V analog input


13 (M)

AIN 2

temperature input


14 (L)

AIN 1

temperature input


15 (K)

DIN 2

Digital input

 

16 (J)

DIN 1

Digital input

 

 

 

 

Extra information

ground_is_important

Note: Ground is important...

 

 

See also

Product page

Download base maps