Answer:
The pick up is appplied hall sencer i think.
Please check output voltage between (0)and(+)terminal on the connnecter of distributer,it must connnect any operating voltage(about4-16volt)between (+)and(-)teminal.
Do not mistake porality.
Then rotate the shaft and check the output between(0)and (+)terminal, Pick up is senced by facing magnet.
If output voltage between terminal(0)and (+) is controled alternatively (zero or operating volt).
If no effct,damaged IC(pick up).
The pick up must be changed or modified.
This is ref, one sencer is $1us in Tokyo.
(DN6852 is avairable even in Japan)
But why dameged,caused ECU or high or low temp?
Please get shema of ECU and wiring .