17-06-2015, 09:31 PM
(This post was last modified: 17-06-2015, 09:32 PM by el_es.
Edit Reason: forgotten part of statement
)
Hi,
in a '06 Multispace, 1.4i, petrol, no A/C [that's right no A/C]
Only has 1 fan in front of a radiator, fed through a relay fitted in a 'can' shaped crevice in its mount, and triggered from ECU. Not looking likely to have a fan speed reduction resistor either (looked around the radiator mount and about where the wires go to main loom)
Radiator fan is not being triggered.
I can make the gauge go up to red & show stop light if I disconnect coolant temp sensor.
If I disconnect a gray connector going to the fan relay crevice, which has thin red, yellow and white cable through, if I connect +12 to the thin red wire, the fan starts.
When the gauge goes up to threshold, by disconnecting the sensor, or if the temperature really is up to level when it should be triggered on, i measured across F8 in engine compartment f/b, there is voltage. (I put a light bulb across from either end of it to ground)
If I take the gray connector out, and make the temp threshold over so it should be energized, both the thin white and yellow wires seem to be energized (I put a lightbulb across from either to ground)
If I take the radiator mount apart, to get the relay socket out, and short the relay contacts with some wire, the fan starts.
If I take the relay out and feed it +12 through the coil contacts (as shown on the case) the relay clicks.
Have not checked the relay for good contact when energized, though.
Could it still be botched relay (not having good experience with the Cartier relays.... had one fail on my other car p106 PAS relay same maker, really bad design; the power contact is directly on the same shape as the terminal... so when it melts around the terminal, it loses contact even though it's clicking) or should I go to the ECU diagnostics (can they say anything about this? I've no engine warning light on.)
Thanks for reading my first post
in a '06 Multispace, 1.4i, petrol, no A/C [that's right no A/C]
Only has 1 fan in front of a radiator, fed through a relay fitted in a 'can' shaped crevice in its mount, and triggered from ECU. Not looking likely to have a fan speed reduction resistor either (looked around the radiator mount and about where the wires go to main loom)
Radiator fan is not being triggered.
I can make the gauge go up to red & show stop light if I disconnect coolant temp sensor.
If I disconnect a gray connector going to the fan relay crevice, which has thin red, yellow and white cable through, if I connect +12 to the thin red wire, the fan starts.
When the gauge goes up to threshold, by disconnecting the sensor, or if the temperature really is up to level when it should be triggered on, i measured across F8 in engine compartment f/b, there is voltage. (I put a light bulb across from either end of it to ground)
If I take the gray connector out, and make the temp threshold over so it should be energized, both the thin white and yellow wires seem to be energized (I put a lightbulb across from either to ground)
If I take the radiator mount apart, to get the relay socket out, and short the relay contacts with some wire, the fan starts.
If I take the relay out and feed it +12 through the coil contacts (as shown on the case) the relay clicks.
Have not checked the relay for good contact when energized, though.
Could it still be botched relay (not having good experience with the Cartier relays.... had one fail on my other car p106 PAS relay same maker, really bad design; the power contact is directly on the same shape as the terminal... so when it melts around the terminal, it loses contact even though it's clicking) or should I go to the ECU diagnostics (can they say anything about this? I've no engine warning light on.)
Thanks for reading my first post