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Grant Baker

BMW M54 Dual Vanos Wiring

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Hi

Just wiring in an M54 BMW engine with a Wire in ECU.

There is no vehicle specific engine information in the help file. Does anybody know if it is the same as the S54 in terms of setup?

I assume that although there are 2 cam sensors, we just wire in the single LH Exhaust sensor to trigger 2, and LH Inlet to a free DI?

Configuration

 

Engine Type

4 Stroke

 

Cylinders/Rotors

6

 

Firing Order

1-5-3-6-2-4

Ignition Setup

 

Ignition Mode

Direct Spark

 

Spark Edge

Falling (Dwell Edge = Rising)

 

Ignition Delay

Installer to set

Trigger Setup

 

Trigger Mode

BMW S54

Trigger 1

 

Trigger 1 Type

Reluctor

 

Trigger 1 Filtering

Level 1

 

Trigger 1 Arming Threshold

0

1000

2000

3000

4000

5000

6000

7000->

1

3

5

7

7

7

7

7

Trigger 2 (Wired to Exhaust LH Cam Position Sensor)

 

Trigger 2 Type

Hall

 

Trigger 2 Filtering

Level 2

 

Trigger 2 Pull up

On

 

Trigger 2 Edge

Falling

Trig2: VVT

 

Cam Type

Exhaust / LH

 

Offset

25

Calibrate

 

Ref Timing

 
 

Trigger Offset

276 (must check)

VVT Control

 

Cam Control System

BMW S54 Dual Vanos

DI 1-4 (Inlet / LH Cam Position Sensor)

 

Function

Cam Position

 

Cam Type

Inlet LH

 

Pull up Resistor

ON

 

Active Edge

Falling

 

Offset

115

Aux 1 (Inlet / LH Cam VANOS Solenoid)

 

Function

VVT Solenoid

 

Cam Type

Inlet LH

 

Frequency

50 Hz

Aux 2 (Inlet / LH Cam VANOS Solenoid)

 

Function

VVT Solenoid

 

Cam Type

Inlet RH

 

Frequency

50 Hz

Aux 3 (Exhaust / LH Cam VANOS Solenoid)

 

Function

VVT Solenoid

 

Cam Type

Exhaust LH

 

Frequency

50 Hz

Aux 4 (Exhaust / LH Cam VANOS Solenoid)

 

Function

VVT Solenoid

 

Cam Type

Exhaust RH

 

Frequency

50 Hz

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Our info suggests the M54 is the same as the M52, it is the older low pressure vanos that has only one solenoid per cam.  The S54 is the high press system and has 2 solenoids per cam.

Im not sure if there really are "two cam sensors" per cam but we are expecting a single tooth "half-moon" type tooth on both cams.  They appear to be at the front of the engine behind the sprockets. 

Inlet cam sensor to trigger 2 and Exhaust cam to a DI.  Set trigger mode and VVT mode to BMW M52.

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Normally, there's only 1 sensor/CAM, so that means 1 inlet and 1 exhaust cam sensor

Attached a wiring diagram.

I got some wiring diagrams for the solenoids as well, but not on this pc ;) So if you need them just give me a shout

Camshaft-Wiring.jpg

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