Check Ecm Terminal Voltage

(a) Inspect the ECM using an oscilloscope.

(1) While the engine is idling, check the waveform between the terminals of the ECM connector. Standard

VV1, VV2 and NE Signal Waveforms

Tester Connections

Specified Conditions

VV1+ (E6-19) - VV1- (E6-29)

Correct waveform as shown in illustration

VV2+ (E6-18) - VV2- (E6-28)

NE+ (E6-21) - NE- (E6-20)

REPLACE VVT SENSOR

REPLACE VVT SENSOR

VV1 VV2

VV1 VV2

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Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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