Freelander System Description and Operation
DRIVING AIDS
86-2-4
DESCRIPTION AND OPERATION
The following tables give input/output information for the two harness connectors used on the PDC ECU.
Connector C0958
Connector C0957
Inputs and outputs
Two connectors provide the interface between the PDC ECU and the external PDC components.
The ECU receives inputs from the following:
l
Reverse lamp circuit - for system activation when reverse gear is selected
l
PDC switch - fro activation and de-activation of the system
l
Ignition switch - power supply for system operation.
The ECU outputs to the following:
l
Sensors - power and ground connections
l
Sensors - digital signal transmit and receive signals
l
Sounder - signal for sounder operation
l
PDC switch - power supply for switch LED operation.
Diagnostics
The PDC ECU has no diagnostic connection to enable faults to be retrieved using TestBook/T4. An on-board
diagnostic routine monitors the system and alerts the driver to a system fault by emitting a tone from the sounder.
If a PDC system fault has occurred, the sounder will emit a continuous tone for 3 seconds and the PDC switch LED
will flash continuously when reverse gear is selected.
Pin No.
Description
Input/Output
1
Ignition switch power supply
Input
2
Sounder - Negative
Input
3
Not used
–
4
PDC switch
Input
5
Not used
–
6
Reverse gear signal
Input
7, 8 and 9
Not used
–
10
Sounder - Positive 12V supply
Output
11 and 12
Not used
–
13
PDC switch
Output
14 and 15
Not used
–
16
Ground
–
Pin No.
Description
Input/Output
1
Not used
–
2
Sensor - RH Inner - Signal
Input
3
Sensor - LH Inner - Signal
Input
4
Sensor - RH Outer - Signal
Input
5
Sensor - LH Outer - Signal
Input
6 and 7
Not used
–
8
Ground - All sensors
Input
9
Not used
–
10
Power supply - All sensors
Output
11 and 12
Not used
–