Diagnostics

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

–