DVOM Compatibility Check

ICM Input Tee:

ICM Output Tee:

CAUTION: A 12 volt rest Lamp should not be used to test CID, PIP, IDM, SPOUT or DPI circuit signals. It will load the circuit and may cause erroneous measurements or improper ICM/PCM operations (i.e. Engine stall).

NOTES:
^ When using a DVOM on the DC range, correct Test Lead Polarity must be followed. The red lead Is positive (+) and the black lead is negative (-).

^ To check PIP or CID, the engine is "bumped" with the starter without starting the engine while watching the voltmeter. Both the CID and PIP signals are digital and should switch between B+ and ground as the engine turns. To see the signal change using the DVOM, the engine must be turned in very short bursts.