Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001H4XQ |
Model Year Start: 2020 |
Model: Corolla |
Prod Date Range: [01/2019 - 04/2020] |
Title: 2ZR-FXE (ENGINE CONTROL): ECM: REMOVAL; 2020 MY Corolla Corolla HV [01/2019 - 04/2020] |
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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Auxiliary battery terminal is disconnected/reconnected
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Perform steering sensor zero point calibration
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Lane Control System (for HV Model)
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Pre-collision System (for HV Model)
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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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NOTICE:
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After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))
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If the ECM has been struck or dropped, replace it.
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Perform the Vehicle Identification Number (VIN) or frame number registration when replacing the ECM.
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PROCEDURE
1. PRECAUTION
NOTICE:
After turning the power 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.
2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
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3. REMOVE ECM
(a) Raise the 2 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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(b) Disengage the 2 clamps.
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(c) Remove the bolt and separate the engine wire from the No. 1 ECM bracket.
(d) Remove the bolt, nut and ECM.
NOTICE:
If the ECM has been struck or dropped, replace it.
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Bolt
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Nut
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4. REMOVE NO. 1 ECM BRACKET
(a) Remove the 2 screws and No. 1 ECM bracket from the ECM.
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5. REMOVE NO. 2 ECM BRACKET
(a) Remove the 2 screws and No. 2 ECM bracket from the ECM.
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