Toyota Yaris: Power Integration 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 the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
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When disconnecting and reconnecting the auxiliary battery.
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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 NO. 1 ENGINE ROOM RELAY BLOCK - STD P/I NO. 1 FUSE - INP STD NO. 1-1 FUSE ILLUSTRATION
*1 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *2 POWER DISTRIBUTION BOX ASSEMBLY - ECU-IGR NO...
Other information:
DESCRIPTION The ECM communicates with each sensor and ECU via CAN communication. If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U010087 Lost Communication with ECM/PCM "A" Missing Message When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake actuator assembly) and ECM is detected for approximately 1 second or more...
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the horn button assembly removal/installation are shown below...
Categories
The front seat belt pretensioners are designed to deploy in moderate or
severe frontal, near frontal collisions.
In addition, the pretensioners operate when a side collision or a rollover
accident is detected. The pretensioners operate differently
depending on what types of air bags are equipped. For more details
about the seat belt pretensioner operation, refer to the SRS Air Bag
Deployment Criteria.
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