p38 no heater blowers

Hi my name is Shaun i own a 1997 Rangy p38 2.5 dse i have an issue with the heater blowers i have changed the relays the fusebox the motors and the heater control unit with no joy i have also checked the fuses which are fine the book in the display is on i have checked for power at the motors and there is no supply there if i power up the motors they work i have read several forums and have tried different things with no joy i am now at a loss anyone out there with anymore ideas many thanks shaun

Faulty regulator assembly also known as the final stage resistor...

thanks for your reply could you tell me where that is situated cheers shaun

Or the fuse box its self

shaun smith said:

thanks for your reply could you tell me where that is situated cheers shaun

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Tis very fiddly, driver side footwell, right side of the center tunnel all the way in the back against the firewall), you need is a Torx screwdriver to remove footwell partition…

Take off the connector and then release the clip on the bottom of the unit…

The speed control transistors are located in the blowers one each side. Motors are powered from relays 6 and 7 and controlled by Hevac unit via speed control transistors fitted to each motor.