CMF_nz_aj
» CMF MemberThis is not the usual Nissan problem, fan working at only one speed because of stuffed resistor board.
After checking the fuses, checking the resistor board, checking the switch, checking for power at the motor connection and checking motor resistance, I removed the fan & motor.
The fan worked fine, I couldn't find anything that would have jammed it.
I put it back together. Not working again.
Pulled it out, works fine. I then turned the fan around to the same orientation it would be when installed. It didn't work.
I took the fan off the motor. There was a lot of coppery looking dust under the fan & on the end of the motor. I cleaned all this off & blew out the motor.
It all appears to be working fine now.
This was a 1997 facelift with about 180,000km.
Getting the heater switch out is difficult. Need to remove radio first & pull controls down through that hole.
Also note that the fan is supplied with +12V and the resistors & switch work on the ground connection. Resistance varies from about 0.6 ohm on fast to about 3.3 ohm on slow.
Heater fan motor & resistor are all accessable below the glovebox. The glove box does not have to be open or removed.
After checking the fuses, checking the resistor board, checking the switch, checking for power at the motor connection and checking motor resistance, I removed the fan & motor.
The fan worked fine, I couldn't find anything that would have jammed it.
I put it back together. Not working again.
Pulled it out, works fine. I then turned the fan around to the same orientation it would be when installed. It didn't work.
I took the fan off the motor. There was a lot of coppery looking dust under the fan & on the end of the motor. I cleaned all this off & blew out the motor.
It all appears to be working fine now.
This was a 1997 facelift with about 180,000km.
Getting the heater switch out is difficult. Need to remove radio first & pull controls down through that hole.
Also note that the fan is supplied with +12V and the resistors & switch work on the ground connection. Resistance varies from about 0.6 ohm on fast to about 3.3 ohm on slow.
Heater fan motor & resistor are all accessable below the glovebox. The glove box does not have to be open or removed.