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13 G, NE Signalญ (No. 2) No NE signal to ECM for 0.1 sec. or more at 1,000 rpm or more.ญ Open or short in crankshaft position sensor circuit.
Crankshaft position sensor
ECM
NE signal does not pulse 12 times to ECM during the interval between G1 and G2 pulses.ญ Open or short in crankshaft position sensor circuit.
Mechanical system malfunction (skipping teeth of timing belt, belt stretched)
Crankshaft position sensor
ECM
Deviation in G (G1, G2) and NE signal continues for 3 sec. during idling (throttle fully closed) after engine warmed up. Mechanical system malfunction (skipping teeth of timing belt, belt stretched)
Camshaft position sensor No. 1, No. 2
ECM
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