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O/D Cancel Signal

WARNING: This page is about a different car, the 2002 Toyota Avalon and 2001 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit reference, see WIRING DIAGRAMS  and/or CONNECTOR IDENTIFICATION  .
  1. Access the ECM. See Figure. Turn the ignition to the ON position. Using DVOM, measure voltage by backprobing between ECM 28-pin connector E7 terminal No. 24 and ground. See Figure. If voltage is not 10-14 volts, go to next step. If voltage is 10-14 volts, substitute ECM with known-good unit and retest.
  2. Turn the ignition to the OFF position. Disconnect the cruise control ECU 16-pin connector C15, located behind relay panel under driver's side of instrument panel. Turn the ignition to the ON position. Using DVOM, measure voltage between cruise control ECU harness connector C15 terminal No. 14 and ground. See Fig 1. If 10-14 volts is present, replace cruise control ECU and retest. If 10-14 volts is not present, check and repair circuit between cruise control ECU and ECM. If circuit is okay, replace ECM and retest. See appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE.
Fig 1: Identifying Cruise Control ECU Terminals
G99G03563Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002