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db10: Service Code 54: Attempt to Generate Code 64
Steps _Key OFF, wait 10 seconds
_Disconnect vehicle harness from ACT sensor. Inspect for damaged pins, corrosion, loose wires, etc. Service as necessary
_Insert jumper wire at the ACT vehicle harness connector between ACT SIGNAL and SIGNAL RETURN
_Run Key ON, Engine OFF Self-Test
Result Is Code 64 present?
Direction YES

Replace ACT sensor. Remove jumper wire. Reconnect ACT sensor. Rerun Quick Test.


Remove jumper wire.
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