Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001CDKW |
Model Year Start: 2019 |
Model: GR Corolla |
Prod Date Range: [06/2018 - 09/2022] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, Gasoline Model): Back Door Entry Unlock Function does not Operate; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022] |
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
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 TECHSTREAM (B-DR OPENING OPERATION)
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(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
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 TECHSTREAM (TR/B DOOR UNLOCK SW)
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(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
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 Techstream 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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(a) Remove the back door opener switch sub-assembly.
Click here
(b) Inspect the back door opener switch sub-assembly.
Click here
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