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Home >> Toyota >> 1991 >> Tercel DX, 2D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4-CYL >> Code Charts >> Code 12, 13 - Rpm Signal

Code 12, 13 - Rpm Signal

Code 12 is caused by loss of "NE" signal signal from distributor to ECU for at least 2 seconds after starter signal is received at ECU. Ensure starter signal exists at ECU. See TEST NO. 9 OR CODE 43. Code 13 is caused by loss of "NE" signal from distributor to ECU when engine RPM exceeds 1500 RPM.

NOTE: Diagnostic chart not available from manufacturer.
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