This instruction show you guide on how to repair Cab fan ATA 104 prohibited voltage level trouble for Scania trucks.
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Cab fan
Error identification
Prohibited voltage level on the output signal to the cab fan.
Cause
Short circuit in the output signal to the cab fan.
Notes
The auxiliary heater is working correctly.
Action
Check the power supply. Measuring point 2 in the harness-to-harness connector from the auxiliary heater towards the vehicle cable harness and earth.
From battery voltage – 1 V.
Check harness-to-harness connectors and wiring.
If the fault code recurs, renew the control unit.
For more information about Scania truck,please refer to:Scania Trouble Repair.
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