Volvo Penta D6-350 Starboard Engine Check EVC

[Lax207]

Hi Folks,

We are having some trouble with the Starboard engine shooting up a fault 'Check EVC' on the tacho. Engine starts fine, but unable to operate the lever ( cannot move forward, reverse, increase RPM, etc). Engine will only start and stay on idle. As soon as engine turns on, the alarm goes.

Check the Youtube link for the video.
https://youtu.be/tCAmKbaNcoo

When checked for the fault code, this showed:
MID187, PSID 32, FM9. Have looked up the code, seems like the PCU is not getting any signal.

All connections and power seems to be ok and present.
Anyone had anything similar?



Appreciate the advice,
Thanks
Christopher

 

[volvopaul]

Check all the plugs on each engine , seems to be a communication error .
Try carrying out lever calibration.

 

[NBs]

Hi,

Hi, I sometimes had a TWIN KAD44 EDC and a similar bug in another engine. Pressing the fuse buton on the engine (the black box to open) fired. The black box also had replaceable fuses. I do not know if the D6 EVC is similar, read the owner's manual. Below you can find the fuce whit buton relase, that I meant, there may be more fuces.

VP D6 Automatical fuce number 21 and 23 look link
https://www.marinepartseurope.com/fi/volvo-penta-rajaytyskuva-47704600-30-37266.aspx

And VP KAD44/300 black box fuces
https://www.marinepartseurope.com/fi/volvo-penta-rajaytyskuva-7738870-30-4955B.aspx

NBs

 

[Andyroonot]

Hi Christopher

The fault code suggests that the PCU (likely to be mounted on a bulkhead in the engine bay) has lost communication with the HCU (mounted underneath the dashboard). You will have one each of these components per engine. The PCU has 1 x 6 pin cable on the left hand side, which connects it to the HCU, and a multipin cable on the right which connects it to the engine, the gear shift actuator and the trim pump.

The fault code suggests that it is a communication issue between the two units, so I would first check both ends of the 6 pin cable - this will have 2 x red (battery positive), 2 x black (battery negative) and 2 x CAN (yellow & white, grey & yellow) wires - check that none of the pins are 'pushed back', dirty or wet. That said, unless you have had anyone working on your boat recently who may have drilled through this cable, it is unlikely that the cable has just failed. Do the same at the HCU end - the cable is the one with the green tag marked 'Datalink'. As the tacho and other gauges are powering up it does suggest that the power supply to the HCU is fine, so perhaps an issue with the CAN wires, or something inside either of the control units.

To test this, you can temporarily swap the Datalink cable from one PCU to the other in the engine bay (if there is enough slack), and this will make the port side key switch start/stop the stb'd engine, and the stb'd key switch start/stop the port engine. If the port gauges then have the same fault code it is the stb'd side PCU that has the issue. If the fault remains on the stb'd side then it is either the cable or something at the helm with the problem.

If the fault stays on the stb'd gauges, reinstate the Datalink plugs to their correct PCU in the engine bay and swap the Datalink plugs at the HCU end instead - if the fault switches to the port set of gauges then the fault is with the stb'd Datalink cable. If it still remains on the stb'd gauges then it will likely be the HCU.

Finally to test this, reinstate all plugs to their correct side and swap the HCU in it's entirety to the port side - if the problem moves then you have found the culprit.

My personal experience where no faults have been reported before and it has seemingly happened 'overnight' is a control unit failure rather than a wiring issue, although water can cause these sorts of issues of course, so worth checking the plus.

You will get a fault on both engines when you start swapping the control units from side to side as the chassis ID's are no longer matched, but the faults will go once you put things back to original. However, with your generation of EVC system you should be able to press the buttons on the control panel to bring the fault codes up, so you just need to scroll through them and see which side has the MID187-PSID 32-FM9 code.

Hope this helps!

 

[Lax207]

Hi Christopher

The fault code suggests that the PCU (likely to be mounted on a bulkhead in the engine bay) has lost communication with the HCU (mounted underneath the dashboard). You will have one each of these components per engine. The PCU has 1 x 6 pin cable on the left hand side, which connects it to the HCU, and a multipin cable on the right which connects it to the engine, the gear shift actuator and the trim pump.

The fault code suggests that it is a communication issue between the two units, so I would first check both ends of the 6 pin cable - this will have 2 x red (battery positive), 2 x black (battery negative) and 2 x CAN (yellow & white, grey & yellow) wires - check that none of the pins are 'pushed back', dirty or wet. That said, unless you have had anyone working on your boat recently who may have drilled through this cable, it is unlikely that the cable has just failed. Do the same at the HCU end - the cable is the one with the green tag marked 'Datalink'. As the tacho and other gauges are powering up it does suggest that the power supply to the HCU is fine, so perhaps an issue with the CAN wires, or something inside either of the control units.

To test this, you can temporarily swap the Datalink cable from one PCU to the other in the engine bay (if there is enough slack), and this will make the port side key switch start/stop the stb'd engine, and the stb'd key switch start/stop the port engine. If the port gauges then have the same fault code it is the stb'd side PCU that has the issue. If the fault remains on the stb'd side then it is either the cable or something at the helm with the problem.

If the fault stays on the stb'd gauges, reinstate the Datalink plugs to their correct PCU in the engine bay and swap the Datalink plugs at the HCU end instead - if the fault switches to the port set of gauges then the fault is with the stb'd Datalink cable. If it still remains on the stb'd gauges then it will likely be the HCU.

Finally to test this, reinstate all plugs to their correct side and swap the HCU in it's entirety to the port side - if the problem moves then you have found the culprit.

My personal experience where no faults have been reported before and it has seemingly happened 'overnight' is a control unit failure rather than a wiring issue, although water can cause these sorts of issues of course, so worth checking the plus.

You will get a fault on both engines when you start swapping the control units from side to side as the chassis ID's are no longer matched, but the faults will go once you put things back to original. However, with your generation of EVC system you should be able to press the buttons on the control panel to bring the fault codes up, so you just need to scroll through them and see which side has the MID187-PSID 32-FM9 code.

Hope this helps!

Dear Andy,

First of all thank you very much for you detailed suggestion. It is highly appreciated. We have followed them step by step and seem to have find that the STBD HCU is faulty. When switching over the Datalink cable on the PCU by the engine, problem remained on the STBD.

Next, switched Datalink cables by the HCU, no fault on PORT side, but fault on STBD side.
Reinstated all the plugs and switched whole HCU unit over to PORT, and problem appeared in PORT as well.

As for volvopaul, we have checked the communications cable, and all looks good, no rust, moist or any build up of dirt. Have calibrated the throttle control, but no result.