Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026A21 |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 - 11/2022] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function (TMMMS Made)): Back Door Entry Unlock Function does not Operate; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] |
Back Door Entry Unlock Function does not Operate
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DESCRIPTION
If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the open switch (connection between the back door opener switch sub-assembly and certification ECU (smart key ECU assembly)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
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The smart key system (for Entry Function) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
Click here
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Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
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After repair, confirm that no DTCs are output.
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Check that there are no electrical key transmitter sub-assemblies in the vehicle.
PROCEDURE
1.
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CHECK POWER DOOR LOCK CONTROL SYSTEM
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(a) When the door control switch on the multiplex network master switch assembly is operated, check that the back door lock and unlock according to the switch operation.
Click here
OK:
Back door lock/unlock operate normally.
OK
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2.
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READ VALUE USING GTS (B-DR OPENING OPERATION)
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(a) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
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Measurement Item
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Range
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Normal Condition
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Diagnostic Note
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B-Dr Opening Operation
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Back door opening operation
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Long, Twice or OFF
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Customize setting displayed
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-
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Body Electrical > Smart Key > Data List
Tester Display
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B-Dr Opening Operation
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Result
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Proceed to
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Customize setting is Long or Twice
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A
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Customize setting is OFF
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B
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A
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3.
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READ VALUE USING GTS (TR/B DOOR UNLOCK SW)
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(a) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
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Measurement Item
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Range
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Normal Condition
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Diagnostic Note
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Tr/B-Door Unlock SW
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Back door opener switch sub-assembly (open switch)
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ON or OFF
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ON: Back door opener switch sub-assembly (open switch) pressed
OFF: Back door opener switch sub-assembly (open switch) not pressed
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Displays whether the back door opener switch sub-assembly (open switch) is on or off.
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Use this Data List item to help determine if there is a switch malfunction when the back door open function does not operate.
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Body Electrical > Smart Key > Data List
Tester Display
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Tr/B-Door Unlock SW
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OK:
The GTS display changes correctly in response to the operation of the back door opener switch sub-assembly.
NG
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4.
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CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH SUB-ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
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(a) Disconnect the O61 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the i1 back door opener switch sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
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Condition
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Specified Condition
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O61-26 (TSW5) - i1-3 (UL)
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Always
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Below 1 Ω
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O61-26 (TSW5) or i1-3 (UL) - Other terminals and body ground
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Always
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10 kΩ or higher
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NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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OK
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5.
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INSPECT BACK DOOR OPENER SWITCH SUB-ASSEMBLY (OPEN SWITCH)
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Click here
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