Hi,
Firstly the wipers. The wipers do not work for the first minute then work fine. The single wipe always works.
The single wipe bi-passes the CCU and provides a feed directly to the motor to operate the wipers.
The CCU takes the resistance of the selection on the wiper stalk and then drives the wiper motor accordingly.
Central Control Unit (CCU)
The CCU is plugged into the back of the passenger compartment fusebox below the fascia. Two connectors provide the interface between the CCU and the passenger compartment fusebox and three connectors provide the interface between the main harness and the CCU. The CCU is responsible for controlling the following functions if installed :
l Transit mode.
l Anti theft alarm.
l Windscreen wipers.
l Courtesy lamp delay.
l Door open warning lamp.
l Key in alarm.
l Rear fog guard lamps.
l Lights on alarm.
l Seat belt warning.
l Handbrake warning.
l Rear screen wiper.
l Tail door window.
l Heated rear window.
l Heated windscreen.
l Tail door latch.
l Window lift.
l Seat heating.
l Daytime running lamps.
Your symptoms could point to the CCU taking longer than normal to initialise. A visit to testbook equipped member or garage would help diagnose.
Cheers
Mark