Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM10000000270P8 |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 - 11/2022] |
Title: 2ZR-FAE (ENGINE CONTROL): ECM: REMOVAL; 2023 MY Corolla [09/2022 - 11/2022] |
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during ECM removal/installation are shown below.
Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure
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Necessary Procedure
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Effect/Inoperative Function when Necessary Procedure not Performed
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Link
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Replacement of ECM
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Vehicle Identification Number (VIN) registration
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MIL comes on
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ECU communication ID registration (Immobiliser system)
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Engine start function
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Reset memory
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Deceleration sensor zero point calibration
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CVT oil pressure calibration
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Large shift shock
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Deterioration of fuel efficiency
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for K313
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Replacement of ECM*1
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Code registration (Smart Key System (for Gasoline Model, Start Function))
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Wireless Door Lock Control System (for Gasoline Model with Smart Key System)
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Smart Key System (for Gasoline Model, Entry Function)
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Smart Key System (for Gasoline Model, Start Function)
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Steering lock function*3
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Replacement of ECM*2
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Code registration (Immobiliser system)
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Engine start
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NOTICE:
Perform the Vehicle Identification Number (VIN) registration when replacing the ECM.
Click here
HINT:
When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
Learning completes when vehicle is driven
Effect/Inoperative Function when Necessary Procedure not Performed
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Necessary Procedure
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Link
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Pre-collision System (for TMMMS Made)
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Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.
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Lane Tracing Assist System (for TMMMS Made)
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Lane Departure Alert System (for TMMMS Made)
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PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.
Click here
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
Click here
3. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE
Click here
4. REMOVE RADIATOR SUPPORT OPENING COVER
Click here
5. REMOVE INLET NO. 1 AIR CLEANER
Click here
6. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
Click here
7. REMOVE AIR CLEANER CASE SUB-ASSEMBLY
(b) Disengage the guide to remove the air cleaner case sub-assembly.
8. REMOVE ECM
(a) Disengage the claw and 2 guides to remove the No. 1 relay block cover from the No. 1 engine room relay block and No. 1 junction block assembly.
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(b) Disconnect the 3 connectors from the No. 1 engine room relay block and No. 1 junction block assembly.
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(c) Disengage the 2 claws to separate the engine wire from the No. 1 engine room relay block and No. 1 junction block assembly.
(d) Raise the 2 lock levers while pushing the locks on the levers, and disconnect the 2 ECM connectors.
NOTICE:
After disconnecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors.
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(e) Remove the bolt and nut.
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(f) Disengage the guide to remove the ECM.
NOTICE:
If the ECM has been struck or dropped, replace it.
9. REMOVE NO. 1 ECM BRACKET
(a) Remove the 2 screws and No. 1 ECM bracket from the ECM.
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10. REMOVE NO. 2 ECM BRACKET
(a) Remove the 2 screws and No. 2 ECM bracket from the ECM.
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