Turbo Coupe Technical Articles Turbo Coupe Literature Contact
db90: Continuous Memory Code 54: Check ACT Sensor
Steps _Enter Key On, Engine Off Continuous Monitor mode. Refer to the Appendix in Section 16.
_Observe VOM or STAR LED for indication of a fault while performing the following:
_Lightly tap on ACT sensor (simulate road shock)
_Wiggle ACT connector
Result Is a fault indicated?
Direction YES

Disconnect and inspect connectors. If connector and terminals are good, replace ACT sensor. Clear Continuous Memory Code 54. Refer to Appendix in Section 16. Rerun Quick Test.


GO to Continue

ACT Information:
ComponentAir Charge Temperature Sensor
DescriptionThe ACT provides the EEC with mixture (air and fuel) temperature information. The ACT is used both as a density corrector to airflow calculation and to proportion the cold enrichment fuel flow.
LocationThreaded into the lower intake manifold.
Wire ColorsBlack with White stripe
Pink with Black stripe