93 Accord AC and cooling fan not working
#12
At the A/C condenser fan relay harness connector:
- With a voltmeter’s red lead touching the Yel/Wht wire terminal and voltmeter’s black lead touching body/chassis ground, is there power/voltage with the ignition on?
- With voltmeter’s red lead touching the Wht wire terminal and voltmeter’s black lead touching body/chassis ground, is there power/voltage? The Wht wire should have power/voltage at all times.
#15
Alright ill likely hold off until tomorrow for that. Thank you for all the help so far, seriously you have given the best guidance i could ask for. Do you happen to know the Resistances for the Temp switch at given temperatures? I'v been trying to google them for the last half hour. I want to test the temp switch before just replacing it.
#16
Engine coolant temperature Switch A is a normally open type of switch.
Generally, Switch A should close above 194 degrees F (93 degrees C) and the resistance show about zero ohms when closed; or just check for continuity when it is closed.
Generally, Switch A should close above 194 degrees F (93 degrees C) and the resistance show about zero ohms when closed; or just check for continuity when it is closed.
Last edited by redbull-1; 01-16-2014 at 09:03 PM.
#17
decided to check the terminals since i was up anyway.
--------------______----------------<(tab at Top of connector for reference of orientation)
__yell(11.4v)w/ ign ON __White(~12.14) ON/OFF
__blue or (11.4v) ign ON __ blue or (11.4v) w/ign ON
blue/yellow blue/yellow
__yell(11.4v)w/ ign ON __White(~12.14) ON/OFF
__blue or (11.4v) ign ON __ blue or (11.4v) w/ign ON
blue/yellow blue/yellow
Last edited by onemandeep; 01-16-2014 at 09:57 PM.
#19
Blue wire is for the ground signal (coming from either Temp. Switch A if closed, ECM or radiator fan control module) to close the relay (the relay is normally open) to run the fan; Blue wire should have no power/voltage. If it shows voltage, there is a possibility of a short somewhere, where a power wire is touching this Blue wire or a component is shorting the Blue wire. Check this Blue wire again to make sure whether it has power. Voltmeter black lead should be touching body/chassis ground in the test and voltmeter's red lead touching Blue wire terminal.
The Blue/Yellow wire is to provide power to the fan motor, which comes from the White wire when the A/C condenser fan relay contacts closes. This Blue/Yellow wire should show no power/voltage if it is disconnected from the relay. The Blue/Yellow wire should only show power if it was connected to the relay and the relay contacts closed.
The Blue/Yellow wire is to provide power to the fan motor, which comes from the White wire when the A/C condenser fan relay contacts closes. This Blue/Yellow wire should show no power/voltage if it is disconnected from the relay. The Blue/Yellow wire should only show power if it was connected to the relay and the relay contacts closed.