Toyota Sienna Service Manual: Fail-safe chart
1. FAIL-SAFE FUNCTION
- When communication fails in any of the main wires (communication lines) due to a short circuit or other causes, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning.
- The table below shows the effects on each system when communication is impossible. For further details, refer to each system.
HINT:
- A: Main control judgment system
- B: Location where necessary control information is input
- Skid Control ECU Communication Stop Mode
- Distance Control ECU Communication Stop Mode
- Gateway ECU Communication Stop Mode
- Steering Angle Sensor Communication Stop Mode
- Yaw Rate Sensor Communication Stop Mode
- ECM Communication Stop Mode
- CAN Bus Line
- Open in CAN Main Bus Line
- Short in CAN Bus Lines
- Short to B+ in CAN Bus Line
- Short to GND in CAN Bus Line
- Open in One Side of CAN Branch Line
Diagnosis system
1. BUS CHECK
Select "BUS CHECK" from the "OBD/MOBD
MENU" screen.
HINT:
The ECUs and sensors that are properly connected
to the CAN communication system can be displaye ...
Skid Control ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Skid Control ECU
Communication Stop
Mode
"ABS/VSC/TRC" is not displayed on the
" ...
Other materials:
Removal
1. REMOVE FRONT WIPER ARM HEAD CAP
Using a small screwdriver, remove the 2 front wiper
arm covers.
HINT:
Tape up the screwdriver tip before use.
2. REMOVE FR WIPER ARM RH
Operate the wiper, and stop the windshield wiper
motor assembly to the automatic stop position.
...
How to proceed with
troubleshooting
HINT:
The intelligent tester can be used in steps 2, 3, 4, 6 and 9.
1 VEHICLE BROUGHT TO WORKSHOP
2 CONNECT INTELLIGENT TESTER TO DLC3
HINT:
If the display indicates a communication fault in the tester,
inspect the DLC3.
3 CHECK DTC AND FREEZE FRAME DATA
(a) Check for DTC(s) and freeze f ...
Eject Error/ Elevator Error/ Clamp Error
DTC 44-45 Eject Error
DTC 44-51 Elevator Error
DTC 44-52 Clamp Error
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-45
Disc cannot be ejected.
Television display assembly
44-51
Mechanical error occurs during elevator operation.
...
