Toyota RAV4 manuals

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:

Precaution
1. PRECAUTION OF HEADLIGHT BULB REPLACEMENT  When any defects such as deformation, crack, dent, chipping, etc. are identified on the discharge headlight (especially, on the light control ECU), replace it with a new one.  Even if the operation seems to be normal, the failsafe ...

Oxygen (A/F) Sensor Pumping Current Circuit
HINT: Although the DTC titles say oxygen sensor, these DTCs relate to the Air-Fuel Ratio (A/F) sensor. Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and located near the engine assembly. DESCRIPTION Refer to DTC P2195 (See page ES-355 ...

Installation
1. INSTALL STEERING ANGLE SENSOR (a) Install the steering sensor onto the spiral cable. 2. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 3. INSTALL SPIRAL CABLE SUB-ASSEMBLY (See page RS-434) 4. INSTALL STEERING COLUMN COVER LWR (See page RS-435) 5. CENTER SPIRAL CABLE (See page RS-435) 6. IN ...

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