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Have 87 RV with 22-RE. Code 12 says "Knock Control Sensor." I assumed that was spark knock. Book says timing should be 5 degrees BTC. Can only stop code 12 by setting timing to 5 degrees After Top Dead Center. Any suggestions? Where would I look for the knock sensor if it is defective?
 

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The FSM (factory service manual) and the emission's sticker underneath the hood state that the engine timing should be 5 degrees BTDC with check engine/timing connector shorted and 8 degrees without,that is the norm.The knock sensors never fail and are located near the oil filter but the wire harness does as it common on Toyotas.

Sidney
Repairs tv's,vcr's,home/car audio out of my home
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova Scotia
Canada
1985 Toyota 4-Runner,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 241 000 KM

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Engine timing is set at 5 BTDC with engine/timing connector shorted. Check engine light comes on and will produce the code 12, (Knock Sensor Control). Has to be something other than timing.
 
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