Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Corolla and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT DLC3 TERMINAL VOLTAGE
1. Turn the ignition switch to ON.
2. Measure voltage between terminals 13 (TC) and 4 (CG) of DLC3.
  OK:
  
  Voltage: 10-16 V
  
  Fig 1: Identifying Terminals 13 (TC) And 4 (CG) Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
2. NG: GO TO NEXT STEP.
CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL ECU ASSY AND DLC3)
1. Check for open and short circuit in harness and connector between cruise control ECU assy and DLC3 (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: CHECK AND REPLACE CRUISE CONTROL ECU ASSY (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )