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Electronic Spark Timing <--> [Electronic Spark Control Module] > < Data Link Connector|Description and Operation

Cavalier L4-121 2.0L VIN B 2-bbl (1983)

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Figure 1 Terminal Arrangement In Connector

EXTRACTING TROUBLE CODES:

With the ignition switch ON and the engine either stopped or running, the "test" terminal in this connector should be grounded.  SEE procedure in 
TESTING AND INSPECTION.

Electronic Spark Timing <--> [Electronic Spark Control Module] > < Data Link Connector|Description and Operation