Toyota Sienna Service Manual: ECM Communication Circuit Malfunction
DTC C1203/53 ECM Communication Circuit Malfunction
DESCRIPTION
The circuit is used to send TRAC and VSC control information from the skid
control ECU to the ECM, and
engine control information from the ECM to the skid control ECU through the CAN
communication
system.
INSPECTION PROCEDURE
1 CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)
(a) Check that the proper ECM and brake actuator assembly (skid control ECU) are installed.
OK: Proper ECUs are installed.
REPLACE ECM
Engine Control System Malfunction
DTC C1201/51 Engine Control System Malfunction
DESCRIPTION
If trouble occurs the engine control system, the ECM transmits the
abnormality to the skid control ECU.
The skid control ECU set this ...
Zero Point Calibration of Yaw Rate Sensor Undone
DESCRIPTION
The skid control ECU receives signals from the yaw rate sensor via CAN
communication system.
Yaw rate sensor has the built-in deceleration sensor.
If there is trouble in the b ...
Other materials:
System description
1. Radio and navigation assembly outline
Conventionally, 2 separate devices, a "radio and
display" and a "navigation ECU" are used. This
model has adopted a new type, combining these
devices into a single unit.
2. Navigation system outline
Vehicle ...
On-vehicle inspection
1. INSPECT CAMSHAFT TIMING CONTROL VALVE ASSEMBLY
Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Start the engine and warm it up.
Select the intelligent tester from the ACTIVE TEST
menu.
Check the engine speed ...
Grocery bag hooks
The hooks are designed to hang things like a grocery bag.
Type A (front seatback)
(if equipped)
Type B (third seatback)
Type C (luggage compartment)
Type D (luggage compartment)
Pull the hook up.
WARNING
Type C: When not in use, keep the grocery ...