Question about Mitsubishi Diamante
Posted by Anonymous on
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Posted on Jan 02, 2017
Radiator cooling fan is not electric, it is driven by a silly hydraulic pump which is located low on the passenger side of the engine above the alternator. All 2000-2002 LS's have this system. Most likely either the motor or pump has failed.
Posted on Aug 17, 2010
Testimonial: "good advice"
SOURCE: location of cooling fan fuse
The radiator cooling fan on your 1990 Ford Thunderbird Super-Coupe is supplied power via the BLACK, 18 Gauge, fusible link near the battery.
If your cooling fan is not getting any power to operate (and you are certain that the fan motor is in good working order) the most likely cause of you fan not working is a failure in the Constant Control Relay Module (CCRM), which is mounted to the upper radiator support.
I have replaced many of these because the circuit boards inside them like to burn.
HERE IS HOW TO TEST IT:
Check for power at the CCRM on pins 3 and 4 BLACK/ORANGE wires. If there is power there, the fusible link is good. If there is no power at these connectors, repair the fusible link or the circuit between the fusible link and the CCRM.
Then, the Powertrain Control Module (PCM) turns the fan on by grounding the fan relays inside the CCRM at Pins 14 and 17.
So if you have power on the BLACK ORANGE wires, You should be able to manually turn the fan on by grounding Pin 14 (TAN/ORANGE) for fan LOW speed and Pin 17 (GREEN/PURPLE) for fan HIGH speed.
If grounding these wires does not get the power to come on at the fan motor, then the CCRM needs to be replaced.
If this makes the power come on (at the motor connector) but the motor will not run, then you need to replace the fan motor.
If grounding these wires makes the motor run, you have a problem with the engine coolant temperature sensor or the PCM.
Posted on Apr 23, 2012
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