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                                                                                                                              05-2043
                                            DIAGNOSTICS          -   DYNAMIC LASER CRUISE CONTROL SYSTEM                          05BEN-01




CRUISE MAIN INDICATOR LIGHT CIRCUIT

CIRCUIT DESCRIPTION
When the cruise control main switch is ON, CRUISE main indicator light and READY indicator light comes
on.
This indicates the control condition (the front vehicle, vehicle-to-vehicle distance, and set vehicle speed)
and fail-safe state through the multiplex communication system.
The master warning light, cruise main indicator light and vehicle-to-vehicle distance information come on
as the alarm buzzer sounds.
HINT:
If the front vehicle in the same lane significantly decrease the vehicle speed or another vehicle cuts in front
of your vehicle, adequate deceleration cannot be applied and the vehicle-to-vehicle distance will shorten.
At this time, the system sounds the buzzer and the master warning light blinks to warn the driver.
INSPECTION PROCEDURE
   1      READ VALUE OF HAND-HELD TESTER

(a) Connect the hand-held tester to the DLC3.
(b) Check the cruise main indicator light using DATA LIST.
ECM:
                                   Measurement Item /
            Item                                                            Normal Condition                    Diagnostic Note
                                    Display (Range)
                              Cruise control system stand by          ON  OFF : Change ON/OFF
        CCS READY M                                                                                                   "1"
                            condition (Main CPU) / ON or OFF         each time Main SW is Pushed in.
                             Cruise control system stand by           ON  OFF : Change ON/OFF
        CCS READY S                                                                                                   "1"
                            condition (Sub CPU) / ON or OFF          each time Main SW is Pushed in.
                            Cruise indicator signal (Main CPU)           ON : "CCS READY" ON
       CCS INDICATOR M                                                                                                "2"
                                       / ON or OFF                      OFF : "CCS READY" OFF
                            Cruise indicator signal (Sub CPU)            ON : "CCS READY" ON
       CCS INDICATOR S                                                                                                "2"
                                       / ON or OFF                      OFF : "CCS READY" OFF

HINT:
"1" is OK, but "2" is NG  DTC output or ECM failure
                                                      OK             PROCEED TO NEXT CIRCUIT INSPECTION
                                                                     SHOWN ON PROBLEM SYMPTOMS TABLE
                                                                     (See page 05-2008 )

   NG

  GO TO COMBINATION METER SYSTEM (See page 05-1525 )




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                              Author :                 Date :                     2226

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