Inspection Procedure

INSPECT DLC3 TERMINAL VOLTAGE
1. Turn the ignition switch to ON.
2. Measure voltage between terminals 13 (Tc) and 4 (CG) of DLC3.
  
  Fig 1: Identifying DLC3 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Voltage: 10 - 16 V
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 )