Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 2021t pstd4000
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05-2008
DIAGNOSTICS - DYNAMIC LASER CRUISE CONTROL SYSTEM
05BE5-03
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
HINT:
Inspect each malfunction circuit in numerical order for the corresponding symptom.
If the malfunction still exist even after checking and confirming that all the circuit are normal, replace the
ECM.
Symptom Suspect Area See page
1. Cruise control switch circuit 05-2038
Main switch cannot be turned ON.
2. Cruise main indicator light circuit 05-2043
(Cruise indicator light in combination meter does not come on.)
3. ECM -
Vehicle speed setting cannot be done.
1. Cruise control switch circuit 05-2038
(Although indicator light in combination meter come on when the
2. ECM -
main switch is turned ON, it goes off when vehicle speed is set.)
1. Cruise control switch circuit 05-2038
Setting cannot be done. 2. Stop lamp switch circuit 05-2011
(Indicator light in combination meter come on when the main 3. Park/Neutral position switch circuit 05-566
switch is turned ON and it remains ON while setting.) 4. Combination meter system 05-2043
5. ECM -
1. Cruise control switch circuit 05-2038
2. Vehicle speed sensor circuit 05-2010
While the vehicle is driving with cruise control, the set control is
3. Stop lamp switch circuit 05-2011
canceled.
4. Cruise main indicator light circuit 05-2043
(Indicator light and CRUISE remain ON.)
5. Park/Neutral position switch circuit 05-566
6. ECM -
1. Vehicle speed sensor circuit 05-2010
2. Malfunction in speedometer circuit 05-1525
Hunting
3. Laser radar sensor circuit 05-2018
(Speed is not constant.)
4. Distance control ECU circuit -
5. ECM -
Setting cannot be cancelled.
1. Cruise control switch circuit 05-2038
(When Coast, Acceleration, Resume, Set speed change and Con-
2. ECM -
trol switch are operated.)
1. Clean laser radar sensor -
Erroneous detection or lost sight of the vehicle ahead.
2. Improper aiming of laser sensor beam axis 82-3
1. Buzzer circuit 05-2020
2. VSC system 05-431
Alarm buzzer does not sound. 3. Laser radar sensor circuit 05-2018
4. Distance control ECU -
5. ECM -
1. Combination meter system 05-1525
Set distance cannot be changed. 2. Distance control switch 05-2041
3. ECM -
1. Combination meter system 05-1525
No display.
2. ECM -
1. ABS solenoid circuit 05-472
No brake control 2. VSC system 05-431
(when decelerating) 3. Distance control ECU -
4. ECM -
1. Cruise control switch circuit 05-2038
Constant speed mode cannot be ON. 2. Wire harness -
3. ECM -
4. Combination meter system 05-1525
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2191
05-2009
DIAGNOSTICS - DYNAMIC LASER CRUISE CONTROL SYSTEM
1. Rain sensor system 66-4
Vehicle speed setting cannot be cancelled with wiper Lo/Hi. 2. Wiper system 66-5
(Including automatic wiper) 3. Distance control ECU -
4. ECM -
1. Pattern select switch circuit 05-431
Setting cannot be cancelled in SNOW mode. 2. Automatic transmission system 05-431
3. ECM -
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2192
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