Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Toyota >> 2003 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System - Diagnostics >> DTC 21: Open Vehicle Speed Sensor Circuit >> Inspection Procedure

Inspection Procedure

NOTE:

In case of using the hand-held tester, start the inspection from step  1 and in case of not using the hand-held tester, start from step  3.

  1. READ VALUE OF OBD II SCAN TOOL OR TOYOTA HAND-HELD TESTER (SPDI) 
    1. Connect the hand-held tester to the DLC3.
    2. Check the speed sensor using DATA LIST.
    1. NG: GO TO BRAKE SYSTEM  See HOW TO PROCEED WITH TROUBLESHOOTING .
    2. OK: GO TO NEXT STEP 
  2. READ VALUE OF OBD II SCAN TOOL OR TOYOTA HAND-HELD TESTER 
    1. Connect the hand-held tester to the DLC3.
    2. Check the combination meter using DATA LIST.
    1. NG: GO TO COMBINATION METER SYSTEM  See HOW TO PROCEED WITH TROUBLESHOOTING .
    2. OK: GO TO NEXT STEP 
  3. INPUT SIGNAL CHECK 
    1. See input signal check PRE-CHECK .
    2. Check indicator light operation when driving with vehicle speed above 40 km/h (25 MPH), and with vehicle speed below 40 km/h (25 MPH).

      Standard: 

      Vehicle speed above 40 km/h (25 MPH): Indicator light blinks 

      Vehicle speed below 40 km/h (25 MPH): Indicator light stays ON 

    Fig 1: Indicator Light Blinking Pattern Of Input Signals
    G02828799Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: CHECK AND REPLACE CRUISE CONTROL ECU ASSEMBLY  See ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
    2. NG: GO TO NEXT STEP 
  4. CHECK SPEEDOMETER CIRCUIT  See MALFUNCTION IN SPEEDOMETER .
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP 
  5. CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL ECU AND COMBINATION METER, COMBINATION METER AND VEHICLE SPEED SENSOR)  See ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP 
  6. CHECK SPEED SENSOR  See DTC C0200/31 RIGHT FRONT SPEED SENSOR CIRCUIT, DTC C0205/32 LEFT FRONT SPEED SENSOR CIRCUIT, DTC C1235/35 FOREIGN MATTER IS ATTACHED ON TIP OF RIGHT FRONT SENSOR, DTC C1236/36 FOREIGN MATTER IS ATTACHED ON TIP OF LEFT FRONT SENSOR , DTC C0210/33 RIGHT REAR SPEED SENSOR CIRCUIT, DTC C0215/34 LEFT REAR SPEED SENSOR CIRCUIT, DTC C1238/38 FOREIGN MATTER IS ATTACHED ON TIP OF RIGHT REAR SENSOR, DTC C1239/39 FOREIGN MATTER IS ATTACHED ON TIP OF LEFT REAR SENSOR .
    1. NG: REPLACE SPEED SENSOR 
    2. OK: CHECK AND REPLACE CRUISE CONTROL ECU ASSEMBLY  See ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
scientia non olet · About Mike's Workshop Manuals