Suzuki Samurai 8v EFI Diagnostic Connector Pinout - A/F Duty & Test Terminals

This document is an annotated pinout diagram of a vehicle diagnostic connector, uploaded to a 1987 Suzuki Samurai gallery as part of an 8v EFI swap information set. The illustration shows the face of the diagnostic connector (labeled '1') with four terminals identified as A, B, C, and D. Red annotations mark the 'Index latch' at the top of the connector and identify the 'Freeze' terminals (C and D). A legend below the drawing defines each terminal: A is the A/F (air/fuel) duty check terminal, B is the diagnosis switch terminal, C is ground, and D is the test switch terminal (noted as 'Ign freeze'). Item 1 identifies the whole part as the diagnostic connector. A reader can learn which pins to use for pulling diagnostic codes or checking air/fuel duty cycle on the EFI system: grounding or jumpering the appropriate terminals (diagnosis switch, test switch, ground) as indicated. The document contains no year, model, part numbers, wire colors, or fuse information—only the connector terminal identification. It appears to accompany other 8-valve EFI swap reference pages in the same album.