Toyota Yaris: Cxpi Communication System / Precaution
PRECAUTION
PRECAUTION FOR SEMICONDUCTOR POWER INTEGRATION ECU
(a) Do not remove or install the semiconductor power integration ECU and power distribution box assembly with the negative (-) auxiliary battery terminal connected.
NOTICE:
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After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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When disconnecting the cable from the negative (-) auxiliary battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.
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(b) Make sure that the semiconductor power integration ECU and power distribution box assembly is not exposed to water, as it is not waterproof.
(c) Some load is connected to a dedicated circuit to prevent overcurrent. Therefore, parts other than those specified for the vehicle may not be able to be used.
(d) When replacing the semiconductor power integration ECU and power distribution box assembly, the system may not operate normally if the same part number is not used.
(e) Check that systems are operating normally before proceeding with troubleshooting.
PARTS LOCATION ILLUSTRATION
*1 SEMICONDUCTOR POWER INTEGRATION ECU *2 ENGINE ROOM RELAY BLOCK - STD P/I NO. 1 FUSE - INP STD NO. 1-1 FUSE - WASHER FUSE *3 LIGHT CONTROL LED ECU RH *4 LIGHT CONTROL LED ECU LH ILLUSTRATION
*1 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *2 POWER DISTRIBUTION BOX ASSEMBLY - ECU-IGR NO...
Other information:
DESCRIPTION The Variable Valve Timing (VVT) system adjusts the exhaust valve timing to improve driveability. The engine oil pressure turns the VVT controller (camshaft timing exhaust gear assembly) to adjust the valve timing. The cam timing oil control solenoid assembly (for exhaust camshaft) operates according to signals received from the ECM to control the position of the camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) and supply engine oil...
DESCRIPTION The power steering ECU assembly receives signals from the steering sensor, skid control ECU (brake actuator assembly), forward recognition camera, ECM and clearance warning ECU assembly via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note U010087 Lost Communication With ECM/PCM "A" Missing Message Lost communication with ECM
CAN communication system
ECM
EPS warning light: Does not come on After normal confirmation - U012687 Lost Communication with Steering Angle Sensor Module Missing Message Lost communication with steering sensor
CAN communication system
Steering sensor
EPS warning light: Does not come on After normal confirmation - U012987 Lost Communication with Brake System Control Module Missing Message Lost communication with skid control ECU (brake booster with master cylinder assembly)
CAN communication system
Skid control ECU (Brake booster with master cylinder assembly)(for TMC Made HV Model)
Skid control ECU (Brake actuator assembly)(for TMMF Made HV Model)
EPS warning light: Does not come on After normal confirmation - U014087 Lost Communication with Body Control Module Missing Message Lost communication with main body ECU (multiplex network body ECU)
CAN communication system
Main body ECU (multiplex network body ECU)
EPS warning light: Does not come on After normal confirmation - U023A87 Lost Communication with Image Processing Module "A" Missing Message Lost communication with forward recognition camera
CAN communication system
Forward recognition camera
EPS warning light: Does not come on After normal confirmation w/ Toyota Safety Sense PROCEDURE 1...
Categories
The front and side supplemental restraint systems (SRS) include different
types of air bags. Please verify the different types of air bags
which are equipped on your vehicle by locating the “SRS AIRBAG”
location indicators. These indicators are visible in the area where the
air bags are installed.
The air bags are installed in the following locations:
The steering wheel hub (driver air bag)
The front passenger dashboard (front passenger air bag)
The outboard sides of the front seatbacks (side air bags)
The front and rear window pillars, and the roof edge along both
sides (curtain air bags)
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