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:
Inspection
1. Inspect generator clutch pulley
(a) Hold the center of the pulley, and confirm that the
outer ring turns counterclockwise and does not turn
clockwise.
If the result is not as specified, replace the clutch
pulley.
2. Remove generator drive end frame bearing
(a) Check that the bear ...
On-vehicle inspection
NOTICE:
In this section, the terms "cold" and "hot" refer to the
temperature of the coils. "Cold" means approximately -
10°C (14°F) to 50°C (122°F). "Hot" means approximately
50°C (122°F) to 100°C (212°F).
1. INSPECT IGNITION C ...
DTC check / clear
1. CHECK DTC (USING INTELLIGENT TESTER)
Checking DTCs.
Connect the intelligent tester to the DLC3.
Turn the ignition switch ON.
Read DTCs by following the prompts on the
tester screen.
HINT:
Refer to the intelligent tester operator's manual
for furthe ...
