When checking any control module(s) or unit(s) connector terminals, gently slide the sharp tester probe from the wire side into the connector until it comes in contact with the terminal end of the wire.
DIGITAL CIRCUIT TESTER
(Commercially available) or 07411-0020000
Any CONTROL MODULE or UNIT
SHARP TESTER PROBE
CAUTION
Puncturing the insulation on a wire can cause poor or intermittent electrical connections.
For testing at connectors, bring the tester probe into contact with the terminal from the connector side of wire harness connectors in the engine compartment. For female connectors, just touch lightly with the tester probe and do not insert the probe.