Caprice V6-262 4.3L (1987)
Fig. 005 Chart C-8A Transmission Converter Clutch
Test Description: Step numbers refer to step numbers on diagnostic chart.
1.
Confirms 12 volt supply as well as continuity of TCC circuit.
2.
Grounding the diagnostic terminal with engine "OFF", should energize the capability of the ECM to control the solenoid.
3.
Solenoid coil resistance must measure more than 20 ohms. Less resistance will cause early failure of the ECM "Driver". Using an ohmmeter, check
the solenoid coil resistance of all ECM controlled solenoids and relays before installing a replacement ECM. Replace any solenoid or relay that
measures less than 20 ohms.
