Range Rover P38
LAND ROVER V8
15
DESCRIPTION AND OPERATION
18-pin black connector (C509):
This connector is used primarily for ECM power and earth connections.
NOTE: Voltages and other measurements given are approximations only. Actual values will
depend on particular specification and will be affected by accuracy and calibration of the
measurement tool used and impedances caused by harness wiring etc.
ECM pin details for Connector C509:
Pin No.
Description
Input/Output
Voltage
1
Coil driver - Cylinders 5 & 8
Output
0 - 12V
2
Not used
-
-
3
Not used
-
-
4
Throttle Position Sensor
Output
5V supply
5
ECM to chassis ground
Ground
0V
6
Not used
-
-
7
Main relay supply
Input
0 - 12V
8
Ignition sense
Input
0 - 12V
9
ECM to chassis ground
Ground
0V
10
ECM to chassis ground
Ground
0V
11
Crankshaft (CKP) sensor -ve
Ground
0V
12
Crankshaft (CKP) sensor +ve
Analogue input
18V (average)
at 480Hz
13
Coil driver - Cylinders 2 & 3
Output
0 - 12V
14
Coil driver - Cylinders 1 & 6
Output
0 - 12V
15
Coil driver - Cylinders 4 & 7
Output
0 - 12V
16
ECM to chassis ground
Ground
0V
17
Main relay control
Output
switched to
ground
18
Not used
-
-
