1999 Nissan Quest Raidator Fan did not turn on low speed

Hi KHlow 2008
Thank you very much for your helps, You're very kind,
I scaned OBD II ECM gain, It still deteted Camshaft sensor position A bank 1 malfunction, I removed distributor and test.
1) I back probe square connector with 2 wire that connected to distributor, have power battery present,
2) I back probe the 6 wire connector to 6 pins of distributor, when I backed probe each one with ginition key on and positive lead tachommetter to the back proble and negative to good ground and slowly turn distributor shaft to see any voltage zero to 5. Valtage, the # 5 wire got 11.86 volt, that from battery volt, and the other 5 wire, some got none, some.18 volt, none of them got close to 5 volt.
I decided and order new distributor from California $ 164:00, I'll recive it some time nex week.
Please, Can you tell me instruction How to test distributor? To tell If the camshaft position sensor bad or not, Once again Thank you 2carpro support teams.

Hi !
I'm back, after 2 weeks waitting parts, I had to replace new distributor, and used ECM, too.
Distributor only is not working, ECM is malfunction, I have to replace both. Engine started right up after installation completed, and running fine, I'm lucky, I worked on my own van, so this happen to my van is ok for me, I understand electronic could happen bad any time, But If I work for some oneelse in auto shop and this happen, I'm in deep trouble.
Back to primary issue The low speed fan not work.
I checked the fan motor as your intruction, It turned on low speed and high speed fan by jumped directly to battery lead to fan connector pin 1 and 2 ground pin 3.
Some thing open between fan relay 1 to fan connector, I will work over again and will let you know later. Thank you 2 carpro team work supprort

Hi, I'm sorry to tell you, I have anather problem during A/C installation. The Air blower motor turned on and blow the air, But Air blowed to two vent down on the floor only, whatever switch turned the air to top dash did not work, I removed any thing in the front and both side of central vent blow. I saw two small motor with some linket on them at bottom of heater housing.
I need some one helps, the electronic air nob selector select position of the blow and motor switch the vent direct the air blow , some thing is about like this.
Any helps will be great of my apreciations

Hi, Very good, Thank you very much, It worked now. I replaced both Mode control switch and Mode door motor, They moved smooth as they are all the air blowed on top now.
Once again Thank you very much 2carpro support team, without your helps my van is going Junk yard at 112,000 miles.