Timing marks on the block and Zero Degrees on the balancer, different?

Koenigturbo

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#1
I replaced the timing belt on a 1MZ FE2, their is a timing mark on just above crankshaft sprocket and a round dimple on the crankshaft sprocket, I have aligned them both together. but here is a degree plate on the block with 0 degrees on the plate.

Why is there a degree plate when you can't time the engine any way,.....or can you?

Also why are there marks on the block and sprocket like I described earlier and the degree plate? what's the difference? is one not TDC? I thought they were both TDC.
 

Piratetip

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#2
There should be a way to set the computer to base timing. (Removing timing advance) Then check that with a timing light. Should be 10 degrees btdc.

Information on timing marks.
https://www.toyoheadquarters.com/threads/toyota-1mz-fe-timing-belt-marks.325/

Some info on timing and setting the ECU to base timing.
http://www.tcamanual.com/engine_1mz_8722_fe_3mz_8722_fe_-639.html

But you are correct, this engine has no adjustability for base timing. If it's off, it's likely a sensor problem. Cam/crank sensor, knock sensor, transmission issue, ECU, other...
Timing says it needs to be checked with the vehicle in neutral. Also might be a good idea to do a full reset on the ECU beforehand. To eliminate any potential learned stored values.