Toyota Corolla Cross: Initialization
INITIALIZATION
INITIALIZE MULTIPLEX NETWORK DOOR ECU
NOTICE:
Initialization of the multiplex network door ECU (back door initial position learning) is necessary if the following work procedures are performed while the back door is open.
- The cable to the negative (-) auxiliary battery terminal is connected.
- A power source system fuse of the power back door system is disconnected and reconnected.
- The multiplex network door ECU is replaced or the connectors are disconnected.
- The power back door unit assembly set LH or power back door unit assembly set RH is removed and reinstalled, or replaced.
The power back door does not operate unless the multiplex network door ECU is initialized.
HINT:
- Initialization is not necessary if the above procedures are performed while the back door is closed.
- When disconnecting the negative (-) auxiliary battery terminal, some systems need to be initialized after the negative (-) auxiliary battery terminal is reconnected.
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(a) Initialization operation
(1) Fully close the back door by hand.
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PROBLEM SYMPTOMS TABLE NOTICE: If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors has been disconnected, initialize the power back door system.
TERMINALS OF ECU CHECK MULTIPLEX NETWORK DOOR ECU
(a) Disconnect the U39, U40, U41 and U42 multiplex network door ECU connectors.
(b) Measure the voltage and resistance according to the value(s) in
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a DTC is detected, the multiplex network door ECU stores the current vehicle state as Freeze Frame Data.
CHECK FREEZE FRAME DATA (a) Enter the followi
SEE MORE:
INSPECTION PROCEDURE 1. INSPECT REAR CENTER SEAT OUTER BELT ASSEMBLY
(a) Before installing the rear center seat outer belt assembly, check the ELR function.
NOTICE: Do not disassemble the retractor. (1) When the inclination of the retractor is 15° or less, check that the belt can be pulled
TERMINALS OF ECU HYBRID VEHICLE CONTROL ECU
Connector Code Terminal No.
Symbol Terminal Description
I249 1
E1 ECU ground
2 -
- 3
SMRB System main relay operation signal output (SMRB)
4 M
Transmission control in