Discussion:
Trouble codes 39P,39L, 74R

When the key is turned on I can hear the contactor close and then open. Dash display shows 39L, 39P, 74R. Scan tool says main contactor open for the 39 codes. Code 74R says fault with other controller. I have no troubleshooting info for these codes. My guess is that there a sensor or switch telling the contactor to open, or a problem with the left drive motor. Battery volts are 50. The contactor coil ohms 148. With a volt meter on the wires to the contactor coil I show 46 volts. I think a trouble chart would be necessary.
Thank you for any direction
  • Posted 7 Dec 2021 01:18
  • By Libbey
  • joined 8 Jun'11 - 23 messages
  • Texas, United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Fact of the week
The use of "hello" as a telephone greeting is attributed to Thomas Edison. He is said to have suggested it as a simpler alternative to other greetings, such as "Do I get you?" or "Are you there?".

PREMIUM business

Hyster
Hyster is a world-leading provider of forklift trucks and services in the materials handling industry.
Fact of the week
The use of "hello" as a telephone greeting is attributed to Thomas Edison. He is said to have suggested it as a simpler alternative to other greetings, such as "Do I get you?" or "Are you there?".
TOC Europe wraps up Rotterdam, Netherlands
Upcoming industry events …
October 6-9, 2025 - Detroit, MI, United States
October 6-9, 2025 - Detroit, MI, United States
November 14, 2025 - Melbourne, Australia
Global Industry News
edition #1237 - 3 July 2025
While innovation and new technology are evolving at what seems to be an ever-increasing pace, the need to capture the data (telemetry) from this tech, and the ability to utilise it (telematics) for efficiency and cost savings, is one area attracting more and more attention ... Continue reading
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025