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Home >> Toyota >> 2004 >> Matrix Base, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System - Diagnostics >> Cruise Main Indicator Light Circuit >> Inspection Procedure
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Inspection Procedure

  1. INSPECT TERMINAL VOLTAGE (PI) 
    1. Turn the ignition switch to ON.
    2. Measure voltage between terminal 5 (PI) of cruise control ECU assy and body ground, when the cruise control main switch button is ON and OFF.
      Fig 1: Identifying P1 (+) Connector
      G02916134Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      CRUISE CONTROL SWITCH BUTTON POSITION VOLTAGE

      Cruise Control Switch Button Position Voltage
      OFF 10 - 16 V
      ON Below 1.2 V
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 
    2. NG: GO TO NEXT STEP. 
  2. INSPECT COMBINATION METER ASSY (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    1. NG: REPLACE COMBINATION METER ASSY 
    2. OK: GO TO NEXT STEP. 
  3. CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL ECU ASSY AND COMBINATION METER ASSEMBLY) 
    1. Check for open and short circuit in harness and connector between cruise control ECU assy and combination meter assembly (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  ) 
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