RADIATOR FAN test? - Page 3

RADIATOR FAN test?

This is a discussion on RADIATOR FAN test? within the RAM 1500 Diesel General Discussion forums, part of the RAM 1500 EcoDiesel Forum category; Originally Posted by 97hmcs Have you checked the large 100amp fuse on the battery post as John Jensen mentioned? yex if remove the cable from ...

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Thread: RADIATOR FAN test?

  1. #21
    RAM Rookie bradyhn2017's Avatar
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    Quote Originally Posted by 97hmcs View Post
    Have you checked the large 100amp fuse on the battery post as John Jensen mentioned?
    yex if remove the cable from fuse grey plug marks 0volts if put again marks 12s with car off n 13s with car on

  2. #22
    RAM Rookie bradyhn2017's Avatar
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    Quote Originally Posted by Crash68 View Post
    You might see some form of a reading(probably good enough to determine if the fan should be running), but RMS is typically for an AC signal. The PWM signal to the fan motor is DC
    To accurately measure a PWM signal you need an oscilloscope (doesn't everyone owns one of these???) or a meter capable of reading duty cycle.
    https://www.fluke.com/en-us/learn/be...tal-multimeter
    we test with multimeter not fluke but tester i have friend have fluke i Will ask if help me test it with ur link thnks
    Crash68 likes this.

  3. #23
    RAM Bronze Member Kazimodo's Avatar
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    Z case fuses , on battery post : 100A / 125A / 250A ,
    . All three , including shipping is $25.82, better than dealer
    From:

    https://theelectricaldepot.com/fuses...b40981b4438ea0

    what would happen if he unplugged the connector and put 12 volts on it to test if fan motor turns ,??
    would he still need to put some voltage on the little grey wire too , to determine the speede at which the fan turns ????
    ( considering the fan motor can turn like a boeing ..The EcoDiesel uses a 850 watt fan (71 amps) that uses that 100amp Z Case fuse )
    .
    another member had to replace motor fan , in this thread : https://www.ram1500diesel.com/forum/...rad-fan-2.html
    (( same link as post # 3 ))

    fan assembly : https://www.moparamerica.com/oem-par...bly-68217820ab
    Attached Thumbnails Attached Thumbnails RADIATOR FAN test?-fuse-du-radiator-fan-there.jpg   RADIATOR FAN test?-rad-fan-connector.jpg   RADIATOR FAN test?-rad-fan-connector2.jpg   RADIATOR FAN test?-z-case-fuse-once-removed-battery-post.jpg  

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