Cutlass Ciera Cruiser V6-231 3.8L (1985)
Knock Sensor: Testing and Inspection
Fig. 016 - WIRING DIAGRAM for Chart C-5 Electronic Spark Control System Check. VIN 3, VIN 9, VIN L
CHART C-5
ELECTRONIC SPARK CONTROL (ESC)
3.0L "N" SERIES, 3.8L "A & C" SERIES, 3.8L TURBO "E & G" SERIES
FUEL INJECTION (PORT)
Electronic spark control is accomplished with a module that sends a voltage signal to the ECM. As the knock sensor detects engine knock, the voltage
from the ESC module to the ECM is shut off and this signals the ECM to retard timing.
