SUBARU DTC 6532 ELECTRIC POWER STEERING ecu internal failure peripheral circuit
Need a path for diagnostics, problem is intermittant.
service info is severely lacking.
dtc definition is inherently contradictive.
just need a starting point, besides powers, grounds and data lines…
the code is in the power steering unit control module, and there are no other codes.
control module is under the hood, all passes visual inspection.
Is there freeze frame data? If so, check for low battery voltage (assuming the PID is available). I haven't seen this code, but frequently when I see checksum type codes, I'll find low battery voltage is the cause. I'll check the code description and see if I have any luck making sense of it.
Yikes! You found a DTC definition? I was only able to infer what the issue might be based on the flow chart. So, it doesn't look like a checksum code, which was my original assumption. It looks like there is an issue with the power steering motor, wiring, or control unit. The 3 phase cable for the motor is hard wired to the motor, and has a connector at the control unit. The procedure is to…
Do a voltage drop test!!!!!! Clean the battery terminals and the ground mount points under hood!!! Just Do It! Then put your oscilloscope on the CAN high and low. Turn on the math channel and choose “A+B” and look for spikes across the 5 volt line while turning the steering wheel and observing the patterns.
Theres a TSB for this, 04-24-18-1. There is an internal relay in control module that fails. Requires a new control module.