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Home >> Lexus >> 2008 >> RX 400h AWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control >> Dynamic Laser Cruise Control System >> Cruise Main Indicator Light Circuit >> Inspection Procedure

Inspection Procedure

  1. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to the ON position.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    5. Check the CRUISE main indicator light by performing the Active Test.

    Combination Meter: 

    DIAGNOSTIC NOTE

    Tester Display Test Part Control Range Diagnostic Note
    Indicat. Lamp Cruise Cruise main indicator light BLINK/OFF -

    OK: Indicator light blinks/goes off. 

    NG: REPLACE COMBINATION METER 

    OK: Go to next step. 

  2. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to the ON position.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Laser Cruise / Data List.
    5. Check the Data List for proper functioning of the CRUISE main indicator light. Hybrid Vehicle Control ECU (Laser Cruise):
DIAGNOSTIC NOTE

Tester Display Measurement Item/Range Normal Condition Diagnostic Note
CCS Ready M-CPU Cruise control system standby condition (Main CPU)/ON or OFF Each time main switch is pushed, ON/OFF changes 1
CCS Indicator M-CPU Cruise indicator signal (Main CPU)/ON or OFF ON: "CRUISE" on
OFF: "CRUISE" off
2

OK: When cruise control main switch operation is performed, the result will be same as above. 

HINT:

1 is OK, but 2 is NG → DTC output or hybrid vehicle control ECU failure

NG: REPLACE HYBRID VEHICLE CONTROL ECU 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE