Toyota Corolla Cross: When Replacing Or Removing/installing Parts
Toyota Corolla Cross (2022-2024) Service Manual / General / Setup / When Replacing Or Removing/installing Parts
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Work Procedure
WORK PROCEDURE
PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED (for HEV Model)
Replacement Part
Necessary Procedure
Effect/Inoperative Function when Necess
Ecu Configuration
ECU CONFIGURATION
STABILIZE A POWER SOURCE ON THE VEHICLE SIDE
Shut off as many following systems and parts as possible since they would generate
an electrical load.
CAUTION:
If vehicle systems
Update Ecu Security Key
UPDATE ECU SECURITY KEY
NOTICE:
It is necessary to log in to the Toyota server to perform an ECU security
key update.
Users other than Toyota dealers can log in with a guest account issued
SEE MORE:
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The motor generator control ECU (MG ECU) (inverter with converter assembly) has a self-diagnosis system. If the motor generator control ECU (MG ECU), motor generator control system or a component is not working properly, the ECU records the conditions that relate to
Engine Immobiliser System Circuit Short to Battery (B279A12)
DESCRIPTION If the communication line (IMI - EFIO) between the hybrid vehicle control ECU and ID code box (immobiliser code ECU) is stuck high, the hybrid vehicle control ECU will store this DTC.
DTC No. Detection Item
DTC Detection Condition Trouble Area
Note B279A12
E
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