DTC P0101: Volume Airflow Circuit Range/Performance Problem: Operation
The VAF sensor power is supplied from the MFI relay (terminal No. 4) and ground is provided on ECM harness connector C-119 terminal No. 40 (M/T) or PCM harness connector C-120 terminal No. 16 (A/T). A 5-volt power is applied to the VAF sensor output terminal (terminal No. 3) from ECM (terminal No. 90) or PCM (terminal No. 65). The VAF sensor generates a pulse signal when the output terminal and ground are opened/closed (open/short).