AT1–87 AT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING 4 Check pattern select switch. P Disconnect the pattern select switch connector. C Measure resistance between terminals 3 and 4 of the pattern select switch connector when the select switch is set to the MANU and NORM positions. OK Pattern Resistance MANU 0 Ω (continuity) NORM ∞ Ω (open) Q04367 OK NG Replace pattern select switch. 5 Check harness and connector between battery and pattern select switch, pattern select switch and ECM (See page IN–30). OK NG Repair or replace harness or connector. Check and replace ECM.