16 replies to this topic

[Foxy]

Does anyone have any experience of this fault code? TIS says: C0110 - Return Pump Locked Or Shorted Vehicle speed is greater than 5 km/h (3 mph) Return pump voltage feedback is evaluated and indicates an implausible value (Return pump motor locked) Effect: The ABS function is locked. The system telltale is switched on. ABS light came on perhaps coincidentally after running out of fuel. A forum search for the fault code doesnt bring up any hits so perhaps its a real fault rather than a spurious error code! Any suggestions appreciated

[Foxy_Jr]

Might be worth mentioning that we were unable to open communication (op-com) with the 4 channel ABS unit and that error code was identified by using an OEM module.

[vocky]

only the Lotus fault reader works on the 4 channel ABS unit, the fact that the error showed up with the 2 channel means that either the 2 channel unit is faulty or the ABS block is faulty.

 

Might be worth trying the 4 channel on another car, then this should prove the ABS block needs replacement

[Johnboyhgt]

Probably the motor seized up by the looks of the faults. Can be changed separately. Sent from my SM-G903F using Tapatalk

[Rosssco]

If it comes to it, I have a used (but appears to be very good condition) ABS motor block assembly if needed. Wouldn't want a huge amount for it. Its from a Lotus though, so uncertain of compatibility (bought the full assembly and robbed the controller)

[Foxy]

If it comes to it, I have a used (but appears to be very good condition) ABS motor block assembly if needed. Wouldn't want a huge amount for it. Its from a Lotus though, so uncertain of compatibility (bought the full assembly and robbed the controller)

Thanks very much for that, will be in touch.  

[Foxy_Jr]

Ross, the pump arrived today thanks!

 

Is there anything special I need to do to bleed the system?  Are you supposed to run the pump motor somehow to assist with the bleed or is it just straight froward?  Sure I read somewhere in TIS that you were supposed to put the ABS unit into a special mode to run the pump... But cant find it now!

 

TIA

[FLD]

Yes, you're supposed to run the pump. Activating the abs should do the same thing though.

[Johnboyhgt]

down the road jam the brakes on - Job done.

[Foxy_Jr]

down the road jam the brakes on - Job done.

 

That was the plan!  Is re-bleeding recommended or feel dependant?

[Johnboyhgt]

No bleed needed unless you have had any pipes off. Sent from my SM-G903F using Tapatalk

[Rosssco]

 

down the road jam the brakes on - Job done.

 

That was the plan!  Is re-bleeding recommended or feel dependant?

 

 

Just watch (obviously) as it could introduce significant air into the system and affect your actual braking performance..

 

It depends where the ABS unit is tied into with respect to the reservoir / master cylinder (hence where any air will go), but once you have gone through a few ABS activation cycles, I would recommend re-bleeding the brakes to be sure.  

[Rosssco]

No bleed needed unless you have had any pipes off. Sent from my SM-G903F using Tapatalk

 

He's replacing the complete ABS motor block, so yup.  

[Foxy_Jr]

No bleed needed unless you have had any pipes off. Sent from my SM-G903F using Tapatalk

All the pipes are coming off - (Hopefully!) Changing the complete manifold and pump... Sent from my iPhone using Tapatalk

[Johnboyhgt]

Ah then thats different, motor does come off separately too you know. 

[Foxy_Jr]

Ah then thats different, motor does come off separately too you know. 

 

Wish someone had told me that...  To be honest I had thought about it, but didn't want to risk it. 

 

Still, it's not as bad as changing the fuel filter!!

[smiley]

Believe me when i say changing the plastic fuel line inside the pumphousing is a worse job.