Toyota Sienna Service Manual: Problem symptoms table
RESULT LIST OF CHECK CAN BUS LINE
|
Symptom |
Suspected Area |
| All ECUs and sensors connected to the CAN communication system are not displayed on intelligent tester | CAN Bus Line |
| The result of "CAN BUS WIRE CHECK" is "Open in CAN Main Bus Line". | Open in CAN Main Bus Line |
| The result of "CAN BUS WIRE CHECK" is "Short in CAN Bus Lines". | Short in CAN Bus Lines |
| The result of "CAN BUS WIRE CHECK" is "Short to B+ in CAN Bus Line". | Short to B+ in CAN Bus Line |
| The result of "CAN BUS WIRE CHECK" is "Short to GND in CAN Bus Line". | Short to GND in CAN Bus Line |
COMMUNICATION STOP MODE TABLE
|
Symptom |
Suspected Area |
| Engine not displayed on intelligent tester | 1. ECM Communication Stop Mode |
| Gateway not displayed on intelligent tester | 1. Gateway ECU Communication Stop Mode |
| ABS/ VSC/ TRC not displayed on intelligent tester. *1 | 1. Skid control ECU Communication Stop Mode |
| Yaw rate/ deceleration sensor not displayed intelligent tester. *1 | 1. Yaw Rate Sensor Communication Stop Mode |
| Steering angle sensor not displayed on intelligent tester. *1 | 1. Steering Angle Sensor Communication Stop Mode |
| Distance control not displayed on intelligent tester. *2 | 1. Distance Control ECU Communication Stop Mode |
HINT:
- *1: with VSC
- *2: with Dynamic radar cruise control
How to proceed with
troubleshooting
NOTICE:
DTCs for the CAN communication system are as follows:
U0073, U0100, U0122, U0123, U0124, U0126 and U1101.
HINT:
If U0235 or U1102 is output alone, the CAN communication is
normal
1 CHECK ...
Terminals of ECU
1. JUNCTION CONNECTOR
Junction connector
with VSC
HINT:
*1: with Dynamic laser cruise control
without VSC
CAN junction connector (with VSC)
with VSC
The connection ...
Other materials:
Vehicle Speed Sensor "A"
DTC P0500 Vehicle Speed Sensor "A"
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to
the skid control ECU.
The skid control ECU converts these wheel speed signals into a 4-pulse signal
and outputs it to the ECM
via the combination meter. Th ...
Cold Start Ignition Timing Performance
DESCRIPTION
This monitor will run when the engine is started at -10 to 50°C (14 to 122°F)
of the engine coolant
temperature. The DTC will set after the engine idling for 13 seconds (2 trip
detection logic).
The DTC is designed to monitor the idle air control at cold start. When the
...
Front Clearance Sonar Sensor LH Circuit
DESCRIPTION
An ultrasonic sensor consists of a sensor portion that transmits and receives
ultrasonic waves and a preamplifier
that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and
sends the received
signals to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PROC ...
