Four-C Service Required" HELP PLEASE.

c70man · May 14th, 2021, 16:21

Hi could anyone point me in the right direction to get this fault sorted please
code, SUM-0113 SUSPENSION SOLENOID FRONT LEFT SIGNAL MISSING.
Four-C Service Required" ??
2005 volvo xc70 d5
can the sensor be purchased/replaced ?

VOLVOBOY · May 14th, 2021, 19:05

Hi.
This is what you`re looking for.
Good luck finding a cheap one.

John97Tdi · May 14th, 2021, 20:31

Isn't that an accelerometer that fits to the strut? As far as I was aware the 4C shocks consist of a damper with oil in which metal particles are suspended around a solenoid.When a current is applied to the solenoid it makes the suspension 'stiffer' by thickening the oil/particle mix. The accelerometer tells the strut,via the suspension control module,what to do.
If you follow the cables up into the engine bay you will find where the connectors for each shock plug in. Before you spend a fortune on new bits check the cables for fraying ( close proximity to moving components doesn't help) and clean up the connectors - it may be just a bit of corrosion.

c70man · May 14th, 2021, 20:53

checked out cables al look fine cleaned and sprayed cable end connection both sides checked for resistance in engine bay not sure what they should read but got a reading on centre and one side of the plugs 1.0 ?
anyone know how to test the sensor ?
Tried to cancel code but the message cam back.
front left sensor no signal ??

VOLVOBOY · May 14th, 2021, 21:09

Yep !
It`s an Accelerometer and not a sensor.
Part No. = 30658822 or 30782311

and i agree .. he should do as you say before buying.

c70man · May 14th, 2021, 21:15

yes have checked plugs and wires both sides and they look fine
thank you for the part numbers could not see them on that web site but i will try with the part numbers thank you

VOLVOBOY · May 14th, 2021, 21:16

Hi.
Google the DTC error code to links on forums. There is good info on the likes of Swedespeed.
I think these parts work on 5V signal .

c70man · May 14th, 2021, 21:20

See what you mean 298 euros front shocks are cheaper than that but i guess they do not come with them on ?
i read on one site to short it out to see if its the wire or the solonide
but not sure what wires any ideas welcome.
steve

VroomVroomClonk · May 15th, 2021, 09:26

SUM-0113 is not referring to the external accelerometer, it is referring to the solenoid that is internal to the actual 4c shock absorber (damper) unit on the left front of the car.

I had a SUM-0123 (right front) after replacing both my front shock absorbers because one of my new ones was faulty. I got a replacement and the error code went away.

I didn't change any accelerometers.

On my faulty solenoid, I could test with a multimeter and see it was completely open circuit. A working solenoid has a reading of a few ohms. If you follow the cable that comes out of the very bottom of the shock absorber, you'll get to a connector inside the engine bay and you can take the resistance readings from here.

VOLVOBOY · May 15th, 2021, 14:51

OP.
The DTC code does indeed refer to the internal solenoid.
The CAUSE of the DTC code will be..
1. The solenoid inside the strut has failed.
2. The wiring from the baulkhead to the bottom of the strut has failed.
3. The accelerometer has failed.

If it were my car the first thing i`d do is be absolutely certain the cabling to the base of the strut is sound. Then i`d replace the accelerometer as it`s the least expensive option. Failing that , i`d replace the strut.

May 14th, 2021, 16:21	#1
c70man Member Last Online: Apr 12th, 2024 11:02 Join Date: Sep 2014 Location: derbyshire	Four-C Service Required" HELP PLEASE. Hi could anyone point me in the right direction to get this fault sorted please code, SUM-0113 SUSPENSION SOLENOID FRONT LEFT SIGNAL MISSING. Four-C Service Required" ?? 2005 volvo xc70 d5 can the sensor be purchased/replaced ?

May 14th, 2021, 20:53	#4
c70man Member Last Online: Apr 12th, 2024 11:02 Join Date: Sep 2014 Location: derbyshire	traced cables etc checked out cables al look fine cleaned and sprayed cable end connection both sides checked for resistance in engine bay not sure what they should read but got a reading on centre and one side of the plugs 1.0 ? anyone know how to test the sensor ? Tried to cancel code but the message cam back. front left sensor no signal ??

May 14th, 2021, 21:20	#8
c70man Member Last Online: Apr 12th, 2024 11:02 Join Date: Sep 2014 Location: derbyshire	See what you mean 298 euros front shocks are cheaper than that but i guess they do not come with them on ? i read on one site to short it out to see if its the wire or the solonide but not sure what wires any ideas welcome. steve Last edited by c70man; May 14th, 2021 at 23:14.

May 15th, 2021, 09:26	#9
VroomVroomClonk Member Last Online: Mar 21st, 2024 13:44 Join Date: Jul 2016 Location: Suffolk	SUM-0113 is not referring to the external accelerometer, it is referring to the solenoid that is internal to the actual 4c shock absorber (damper) unit on the left front of the car. I had a SUM-0123 (right front) after replacing both my front shock absorbers because one of my new ones was faulty. I got a replacement and the error code went away. I didn't change any accelerometers. On my faulty solenoid, I could test with a multimeter and see it was completely open circuit. A working solenoid has a reading of a few ohms. If you follow the cable that comes out of the very bottom of the shock absorber, you'll get to a connector inside the engine bay and you can take the resistance readings from here. __________________ V70, 2.4 T5, 2005, Manual. Last edited by VroomVroomClonk; May 15th, 2021 at 09:41.

May 14th, 2021, 20:31	#3
John97Tdi Master Member Last Online: Today 20:05 Join Date: Feb 2007 Location: Rochdale	Isn't that an accelerometer that fits to the strut? As far as I was aware the 4C shocks consist of a damper with oil in which metal particles are suspended around a solenoid.When a current is applied to the solenoid it makes the suspension 'stiffer' by thickening the oil/particle mix. The accelerometer tells the strut,via the suspension control module,what to do. If you follow the cables up into the engine bay you will find where the connectors for each shock plug in. Before you spend a fortune on new bits check the cables for fraying ( close proximity to moving components doesn't help) and clean up the connectors - it may be just a bit of corrosion.

May 14th, 2021, 21:09	#5
VOLVOBOY Lazy Member Last Online: Today 10:50 Join Date: Mar 2007 Location: HORLEY	Yep ! It`s an Accelerometer and not a sensor. Part No. = 30658822 or 30782311 and i agree .. he should do as you say before buying.

May 14th, 2021, 21:15	#6
c70man Member Last Online: Apr 12th, 2024 11:02 Join Date: Sep 2014 Location: derbyshire	yes have checked plugs and wires both sides and they look fine thank you for the part numbers could not see them on that web site but i will try with the part numbers thank you

May 14th, 2021, 21:16	#7
VOLVOBOY Lazy Member Last Online: Today 10:50 Join Date: Mar 2007 Location: HORLEY	Hi. Google the DTC error code to links on forums. There is good info on the likes of Swedespeed. I think these parts work on 5V signal .

May 15th, 2021, 14:51	#10
VOLVOBOY Lazy Member Last Online: Today 10:50 Join Date: Mar 2007 Location: HORLEY	OP. The DTC code does indeed refer to the internal solenoid. The CAUSE of the DTC code will be.. 1. The solenoid inside the strut has failed. 2. The wiring from the baulkhead to the bottom of the strut has failed. 3. The accelerometer has failed. If it were my car the first thing i`d do is be absolutely certain the cabling to the base of the strut is sound. Then i`d replace the accelerometer as it`s the least expensive option. Failing that , i`d replace the strut.

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