RX400 Hybrid ECU location. Fault P2601-780

[johnmac1956]

Hi

 

I have the engine management light on my RX. Car is operating operating OK and hybrid system appears to be performing as expected.

Used Techstream to analyse the fault code.  It is DTC P2601-780 Coolant Pump Control Circuit Range / Performance.

I have forced(via Techstream) the invertor coolant pump and the pump is operating OK.

I have changed the coolant pump relay, but fault still persists,

I found a tech document online which says that the fault is either

 

1. Wire harness or connector
2. Oil pump with electric motor assembly
3. Hybrid ECU

Does anybody know where the hybrid ECU is located? Is it behind the glovebox?

Has anybody had a similar fault.

Just connected 2 local auto electricians. Both fully booked up for 3 weeks and 1 said that he does not work on Lexus vehicles.

So it is investigate myself or my Local Lexus dealer.

 

Thanks

 

[Herbie]

Just sent you some info via PM now John.

[Markusic]

I have the same error code on my 2011 Lexus rx450h.  Any advice regarding how you solved would be greatly appreciated.   I don't have any confidence in the vague estimate that I got from Lexus dealer.

Thanks,

Markus