Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 17-03-2020, 07:51   #1
Registered User
 
TheOffice's Avatar

Join Date: Jun 2012
Location: Annapolis
Boat: Hylas 44
Posts: 837
Yanmar Type C panel starter switch voltage

I've got a Type C panel and a 4JHTE. the starter switch key is the round type.

What is the voltage supposed to read from the terminal coming out of the switch to power the panel when the engine is running.

I'm getting a reading of 1.7 volts and my tach is not working. (Replaced the sender, so I can rule that out). Thought it was 12 volts?
__________________

TheOffice is offline   Reply With Quote
Old 17-03-2020, 08:28   #2
Registered User

Join Date: Mar 2007
Location: Santa Cruz
Boat: Boatless Again
Posts: 4,855
Re: Yanmar Type C panel starter switch voltage

Likely a wiring problem. Curious how you started the engine.

The key switch should have one terminal which reads 12v all the time. There should be also be two terminals that get energized depending on switch position. The first is the 'ignition', which should activate the voltage regulator and the low oil pressure alarm. The second is the starter, which activates the starter solenoid either directly or through a relay.

Do you have any alternator output? Many tachs are alternator driven, and the voltage regulator gets turned on by the ignition switch.
__________________

donradcliffe is online now   Reply With Quote
Old 17-03-2020, 08:29   #3
Registered User
 
TheOffice's Avatar

Join Date: Jun 2012
Location: Annapolis
Boat: Hylas 44
Posts: 837
Re: Yanmar Type C panel starter switch voltage

The tach has a flywheel sensor. Alternator is working, so the exciter wire is good. Should the terminal be putting out 12 volts?
TheOffice is offline   Reply With Quote
Old 17-03-2020, 08:33   #4
Registered User

Join Date: Mar 2007
Location: Santa Cruz
Boat: Boatless Again
Posts: 4,855
Re: Yanmar Type C panel starter switch voltage

typical switch wiring
Attached Thumbnails
Click image for larger version

Name:	is52110-inst.jpg
Views:	280
Size:	59.6 KB
ID:	210740  
donradcliffe is online now   Reply With Quote
Old 18-03-2020, 09:35   #5
Registered User

Join Date: Dec 2012
Boat: Jeanneau SO45.2
Posts: 229
Re: Yanmar Type C panel starter switch voltage

There are a number of connectors in the wiring harness from engine to panel, any one of which can contribute to a voltage drop. My panel has three sets of connections on series (transition between plug types, apparently), plus an extension in the aft cabin and the plugs at the engine. Check/clean the entire run.
In the end I added a cube relay at the starter instead of relying on the harness to deliver full voltage to the solenoid. If it clicks but does not crank, you have too much voltage drop for the solenoid to engage fully - needs at least 10-21 volts.
Redline452 is offline   Reply With Quote
Old 18-03-2020, 11:56   #6
Registered User

Join Date: Apr 2016
Posts: 8
Re: Yanmar Type C panel starter switch voltage

Quote:
Originally Posted by TheOffice View Post
I've got a Type C panel and a 4JHTE. the starter switch key is the round type.

What is the voltage supposed to read from the terminal coming out of the switch to power the panel when the engine is running.

I'm getting a reading of 1.7 volts and my tach is not working. (Replaced the sender, so I can rule that out). Thought it was 12 volts?
I have the same engine and sometimes in Winter or after a rainy season my tach will not show but eng runs fine. Acording to yanmar it is humidity in the panel and nothing to worry; you can blow the panel dry if needed
Wernito is offline   Reply With Quote
Old 18-03-2020, 11:56   #7
Registered User
 
TheOffice's Avatar

Join Date: Jun 2012
Location: Annapolis
Boat: Hylas 44
Posts: 837
Re: Yanmar Type C panel starter switch voltage

Don thanks for the diagram.
Engine has a relay and starts great. Problem is power at the panel. 12 volts into the switch but only 1.7 v out. Looks like a bad switch.
TheOffice is offline   Reply With Quote
Old 18-03-2020, 20:07   #8
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 10,847
Re: Yanmar Type C panel starter switch voltage

Quote:
Originally Posted by TheOffice View Post
Don thanks for the diagram.
Engine has a relay and starts great. Problem is power at the panel. 12 volts into the switch but only 1.7 v out. Looks like a bad switch.
Yes, it does!
__________________

__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Reply

Tags
yanmar

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Replace Yanmar Instrument Panel Type C Djarrka Engines and Propulsion Systems 12 20-08-2019 00:07
Emergency starter switch for Yanmar 4JH2-TE walterc Engines and Propulsion Systems 30 27-04-2016 21:10
Yanmar 3YM30 Starter panel laforge24 Electrical: Batteries, Generators & Solar 2 09-09-2013 13:27
Recessed Starter Switch or Stop-Cable Panel petedd Construction, Maintenance & Refit 4 13-05-2010 17:04

Advertise Here


All times are GMT -7. The time now is 21:46.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.