Does anyone know the physical location of relays: 2/116 - 2/120 ? They are part of DDM/PDM.

used robert's video as a guide--plastic bagged air filter output, cigar to intake manifold, found 2 leaks (throttle body gasket and a turbo hose loose)--thanks pedal2metal

to test for a vacuum leak, where should I inject cigar smoke into intake manifold? what devices should I seal off to perform the test. I have a 2000 v70 XC.
thanks, larry

I'm also getting a po121 code. I have the ETM sitting on my kitchen table. I applied 12volts going to the ETM (pins 5 & 6), but I dont know which set of wires is the potentiometer output to the ECM. Anybody know which pins is the output? thanks, larry

I recently installed a new evaporator core--during reassembly, I reversed the plugs to the damper motors. Got no heat to drivers side, but lots of ac. Fault lights blinked 20 times. Plugged correct inputs to damper motors and everything works (except my brain)!