CHECK OUTPUT SIGNAL OF ECM.

1) Turn the ignition switch to ON.

2) Measure the voltage between the ECM and chassis ground for faulty cylinders.

Connector & terminal

#1 (B134) No. 15 (+) — Chassis ground (−):

#2 (B134) No. 16 (+) — Chassis ground (−):

#3 (B134) No. 25 (+) — Chassis ground (−):

#4 (B134) No. 26 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No