Peugeot fan relay control chopper?

[hezekiel]

Hi,

I've a Peugeot 307 2.0 petrol (RFJ) 2006. The problem is that the engine cooling fan is on at ? speed all the time when the engine runs. When testing with Diagbox, fan speed is the same with both "full speed" and "half speed" tests. The trouble code is "P0480 : fan assembly (GMV1) relay control chopper" Is there some kind of electronic regulator for the fan speed somewhere? I have already replaced the fan resistor/relay pack at the radiator (new part 1308CX from the dealer). No help so far.

I would not mind otherwise, but the air conditioning will not switch on and I suspect that this fault is causing it (gas pressure is ok and the compressor clutch works in Diagbox actuator test).

[autoden]

Usually with pug or citreon, if fan runs its a ect fault.

[dimitar]

configure fan to 2 speed no chopper.

use lexia ,,, 2 speed is for relays and resistor

chopper is for PWM fan regulator

someone has messed the config in ecu

[hezekiel]

Autoden: It's possible, although the engine temp readings seem OK to me. Shouldn't the fan full speed test work anyhow, regardless of the ECT sensor condition?

Dimitar: Had a look, it was set to 2 speed in the engine configuration. Tried also setting it to 1 speed but nothing changed. The P0480 fault didn't clear.

[autoden]

Read th
Generic OBD Error Code Details for P0480

Fan 1 Control Circuit

What does this mean?

OBD Code P0480refers to
The electric cooling fan is controlled by the powertrain control module (PCM) through the cooling fan relay based on inputs from the following components: - The engine coolant temperature (ECT) sensor - The intake air temperature (IAT) sensor - The A/C selector switch - The A/C refrigerant pressure sensor - The vehicle speed sensor (VSS) The PCM controls the cooling fan by grounding the cooling fan control circuit which turns ON the cooling fan relay. The cooling fan relay will be commanded ON when the following conditions are met: - The engine coolant temperature reaches 106?C (223?F) or more. - The A/C clutch requested. - The vehicle speed is less than 38 MPH. The cooling fan relay will be commanded ON regardless of vehicle speed when the following conditions are met: - The engine coolant temperature is 151?C (304?F) or more. - The A/C refrigerant pressure is high. The cooling fan may be commanded ON when the engine is not running under a fan run-on conditions described in the electric cooling fan general description portion of the service manual.
Symptoms

Possible sumptoms of OBD code P0480
- Engine Light ON (or Service Engine Soon Warning Light) - Engine overheating
Causes

Possible causes of OBD code P0480
- Fan control relay harness - Fan control relay connector - Fan control relay - Cooling Fan 1 The Error code is generally activated on detection of the following conditions: The P0481 code is detected when the PCM detects that the commanded state of the driver and the actual state of the control circuit do not match.
Possible Solutions

- Replace the malfunctioning fan control relay 1 - Replaced cooling fan 1 is