TT Terminal Circuit — CIRCUIT DESCRIPTION — Checks of ECM input and output signals related to the throttle position sensor, brakes, shift position and other circuits can be performed by measuring the voltages at terminal TT of the DLC2 — WIRING DIAGRAM — ECM B+ DLC2 TT GR-R 6 GR-R 17 TT 5 IJ1 E10 E1 BR 18 BR BR 69 E1 3 IJ1 E9 EO EO O04731 INSPECTION PROCEDURE 1 Check harness and connector between ECM and DLC2, DLC1 and body ground (See page IN–30). OK NG Repair or replace harness or connector. Check and replace ECM.