Land Rover Workshop Service and Repair Manuals

LAND ROVER V8

19

DESCRIPTION AND OPERATION

ECM pin details for Connector C505 continued:

Pin No.

Description

Input/Output

Voltage

21

HO

2

S sensor Upstream - Heater supply

Output

Heater

resistance =

5.7 ohms

22

Malfunction Indicator Lamp (MIL)

Output drive

Switch to

ground

23

Engine speed output

Output

12V square

wave (4 pulses

per revolution)

24

Fuel pump relay

Output drive

Switch to

ground

25

Not used

-

-

26

Not used

-

-

27

Throttle position

Analogue input

0 - 5V (1.4V at

idle)

28

HO

2

S sensor Upstream - Heater supply

Output

Heater

resistance =

5.7 ohms

29

Engine torque

Output

12V PWM

30

Injector - Cylinder 4

Output

0 - 12V

31

Not used

-

-

32

Injector - Cylinder 7

Output

0 - 12V

33

Injector - Cylinder 5

Output

0 - 12V

34

IACV-C Stepper motor

Output

stepped by

sequentially

changing

voltage polarity

35

IACV-A Stepper motor

Output

stepped by

sequentially

changing

voltage polarity

36

Injector - Cylinder 2

Output

0 - 12V