B Series Truck 2WD L4-2184cc 2.2L 2200 2-bbl (1990)
Malfunction Indicator Lamp: Description and Operation
California
Malfunction Indicator Lamp
The Malfunction Indicator Light (MIL) is located in the instrument panel. If the ECU detects a monitored device malfunction, the MIL will stay "ON"
with the engine running and self-diagnosis check (test) connector not grounded. If the connector is grounded, the MIL will flash malfunction codes
corresponding to the defective input/output devices and/or their circuits.
