P0480

P0480

Diagnosis information - Control unit DME (DFI)

Final stage Radiator fan control module

WARNING:
Open-running fan blades.
Danger of limbs being cut off.
Risk of serious injuries due to foreign bodies being thrown out.

- DO NOT allow hair or clothing close to the rotating range of the fan.
- DO NOT reach into the rotating fan.
- DO NOT place tools or other items in the rotating range of the fan.
- Perform work on the fan only with the ignition switched off.
- Secure the ignition to prevent accidental switching on by other persons.

NOTE:
Sensitive electronics.
Risk of irreparable damage to electronic components.

- DO NOT perform electrical tests.
- DO NOT connect external power sources.

Diagnostic conditions
- Ignition on

Possible fault causes
- Short circuit to ground or open circuit in lines (Power supply Radiator fan control module Terminal 30)
- Short circuit to B+/ground or open circuit in the line (Activation Radiator fan control module module)
- Radiator fan control module Faulty