Helpful Information

Circuit F18 supplies battery voltage to the data link connector. When the ignition switch is in the START or RUN positions, it connects circuit A1 from the Power Distribution Center (PDC) with circuit A21. Circuit A21 feeds circuit F18 through fuse 9 in the fuse block.

Circuit D2O connects to cavity 45 of the PCM. Circuit D2O is the SCI receive circuit for the PCM.

Circuit D21 connects to cavity 25 of the PCM. Circuit D21 is the SCI transmit circuit for the PCM.

Circuit Z12 provides ground for the data link connector.