ENGINE MANAGEMENT SYSTEM - V8
Pin out details connector C0634
Pin No.
Function
Signal type
Reading
1
2
3
4
5
6
7
8
9
Ignition position II
Not used
Input
12 V
-
-
Not used
-
-
Chassis earth
Earth
0V
0V
0V
12V
0-12V
-
Fuel injectors earth
Power stage earth
Permanent battery supply
Switched relay positive
Not used
Earth
Earth
Input battery supply
Input switched
-
Connector 2 (C0635): This connector contains 24 pins and is primarily used for Heated Oxygen Sensors (HO2S)
control and earth. The HO2S sensors require a heater circuit to assist in heating the tip of the sensors to enable closed
loop fuelling to be implemented quickly after cold starting.
Pin out details connector C0635
Pin No.
1
Function
HO2S heater RH bank - downstream
Not used
Signal type
Reading
Output
PWM 12-0V
2
-
-
-
3
Not used
-
4
Not used
-
-
5
Thermostat monitoring sensor
Not used
Earth
0V
6
-
-
7
HO2S heater LH bank - downstream
HO2S sensor RH bank - downstream
HO2S sensor LH bank - upstream
HO2S sensor RH bank - upstream
HO2S sensor LH bank - downstream
Not used
Output
Earth/ Signal
Earth/ Signal
Earth/ Signal
Earth/ Signal
-
PWM 12-0V
0V
8
9
0V
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
0V
0V
-
HO2S heater RH bank - upstream
HO2S sensor RH bank - downstream
HO2S sensor LH bank - upstream
HO2S sensor RH bank - upstream
HO2S sensor LH bank - downstream
Fuel pump relay
Output
Input/ Signal
Input/ Signal
Input/ Signal
Input/ Signal
Output
Output
-
PWM 12-0V
Analogue 0-5V
Analogue 0-5V
Analogue 0-5V
Analogue 0-5V
Switch to earth
PWM 12-0V
-
HO2S heater LH bank - upstream
Not used
Thermostat monitoring sensor
Not used
Signal
Analogue 0-5V
-
-
Main relay
Output
Output
Switch to earth
Switch to earth
EVAP system leak detection pump motor (NAS
vehicles with positive pressure type, EVAP system
leak detection capability only)
DESCRIPTION AND OPERATION
18-2-9
| Categories | Land Rover Defender, Land Rover Discovery II, Range Rover |
|---|---|
| Tags | Land Rover |
| Model Year | 1999 |
| Download File |
|
| Document Type | Workshop Manual |
| Language | English |
| Product Name | Discovery Series II |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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