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  1. M

    Volvo ec240b

    I did get 24 volts on pin No.1 at auto/manual switch. At RE3301 86 terminal I only have 8 volts. I believe one page u sent me named it pin 4. I traced the wire back to JA58 and check voltage coming out the vecu and had 13volts their. One time yesterday I used the jumper wire from 87-30 and not...
  2. M

    Volvo ec240b

    I did make a jumper wire re3301 and went from 30-87 . With auto /manual in auto it started. It did seem to struggle a bit by crank over , stop , crank over more , stop , then cranked over and started until letting of the key. The auto /manual switch is new from Volvo last week.
  3. M

    Volvo ec240b

    When I first got this machine the display didn’t work at all so I bought a new one and it’s been fine since. Probably a year later I had to replace the v ECU . Now I just had to replace the ECU and vecu from what Volvo dealer said to start with with no signal to ECU showing on display. The first...
  4. M

    Volvo ec240b

  5. M

    Volvo ec240b

  6. M

    Volvo ec240b

    Is this the relay we talking about
  7. M

    Volvo ec240b

  8. M

    Volvo ec240b

    The RE3301 relay in the start circuit you have sent . I just replaced that relay cause the dealer said it would be a good idea. It is a little differ from the diagram or maybe I’m not understanding it right. My relay has 2 bigger wires , One hot coming from the circuit breaker and the other big...
  9. M

    Volvo ec240b

    The ECU and vecu was said to be programmed when I bought them and replaced at the same time. The starter will only spin if I have it in manual mode. It does fire off and run fine after cranking it over. If I turn the key before I switch to auto mode I get power to the display but nothing on the...
  10. M

    Volvo ec240b

    I have a Volvo ec240blc that i really hope someone can help me out on . To try to make it short this is where I’m at. 1. Lost signal to EMC ( said on monitor) 2. In manual mode machine died ( few days later) 3. Dealer came out said the ECU and v-ECU was shot . 4. I replaced both with new ones...
  11. M

    Volvo EC240B excavator showing no signal to EMC

    This is definitely getting over my head now. i may play around checking what I can since the next 2 weeks is going be slow because of the holidays . I'm going see what I can find in the book on checking B4 and B12 for that j1587. I'm open to segestions on how to do that. I really do apreaciat...
  12. M

    Volvo EC240B excavator showing no signal to EMC

    I am so use to placing the auto/manual switch to manual before I start the machine now. But earlier when I had the switch in auto and turned the key on to check power on those pins 4,15,16 I noticed a new code came up on monitor. It is 187 sid 252. 2
  13. M

    Volvo EC240B excavator showing no signal to EMC

    Ok With the key in the on position and the auto/manual switch in the auto position i have 24 volts on pin 2 and nothing on pin 4. On the V_ecu B connector pin 15 and 16 I have 24 volts with a ground on 8. Don't make sense to me.
  14. M

    Volvo EC240B excavator showing no signal to EMC

    Sorry for the delay . I've been out of town for last few days. I will check the pins tomorrow and post what I find. Thanks for helping me with this.
  15. M

    Volvo EC240B excavator showing no signal to EMC

    What about 1and 2 on the auto manual switch. Should that be half the voltage on that side? What can I do for the communication bus?
  16. M

    Volvo EC240B excavator showing no signal to EMC

    Sometimes it will come up "no signal to ecm" I'll cycle the key a few time and usually it will go away. I did get a code on it . ---- 140 sid. 250. 9 On the auto/manual switch you have 6 wires , the 2 in the center have voltage. One is 26volts and the other is only 13 volts. I have the same...
  17. M

    Volvo EC240B excavator showing no signal to EMC

    Serial # - EC240V80195 I have checked all fuses behind the cab next to the eecu. I do have power going to the auto/manual switch. Messing with it some more this evening the no signal would show back up on the monitor. I will turn the key back off and then it would go back to not saying no...
  18. M

    Volvo EC240B excavator showing no signal to EMC

    I have replaced the auto/manual switch now. At first I had no signal showing on the monitor. After fooling with it that message is now gone. Next problem is I have to select manual mode in the auto/manual switch for The starter to crank the engine. After I start the machine I go back to auto...
  19. M

    Volvo EC240B excavator showing no signal to EMC

    Now my EC240B Volvo excavator is showing no signal to EMC on the monitor. I have (in the past year) replaced the monitor and the vecu. Then had problems with it running very rough and found bad connection on the main plug to the engine wire harnest. All was good for a while and now I have to...
  20. M

    Volvo EC240B turn table leak

    Thanks uffex I found the swing joint leaking and the rubber boot around it was bad. Got the leaks fixed and the boot replaced. So far so good. I do have another question . Don't know if should start a new post though.
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