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:
ECM / PCM Processor
DTC P0606 ECM / PCM Processor
DESCRIPTION
The ECM continuously monitors its internal processors (CPUs), A/F sensor
transistors and heated oxygen
sensor (HO2S) transistors. This self-check ensures that the ECM is functioning
properly. These are
diagnosed by internal "mirroring" of t ...
Installation
1. INSTALL ROOF DRIP SIDE FINISH MOULDING
When exchanging the clips
Remove the tape that remains on the mounting
surface of the vehicle body and then clean the
surface with white gasoline.
Using a heat light, heat up the clip installation
surfaces of the vehicle body and moulding.
...
Disposal
HINT:
The tire pressure warning valve and transmitter is powered
by a lithium battery. When disposing of the tire pressure
warning valve and transmitter, remove the battery and
dispose of it correctly.
1. DISPOSE OF TIRE PRESSURE WARNING VALVE AND TRANSMITTER
(a) Use the tip of a screwdriv ...
