Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028KF4 |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System): Only Wireless Control Function is Inoperative; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
Only Wireless Control Function is Inoperative
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DESCRIPTION
The door control receiver receives signals from the door control transmitter assembly and sends these signals to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) then controls all doors by sending lock/unlock signals to each door, and sends hazard flasher signals to the combination meter assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
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CHECK POWER DOOR LOCK OPERATION
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(a) Check the power door lock operation.
Click here
OK:
Locked doors unlock.
OK
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2.
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CHECK KEY REMINDER WARNING SYSTEM
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(a) Check that the key reminder warning buzzer operates properly.
Click here
OK:
Key reminder warning buzzer operates properly.
OK
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3.
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CHECK DOOR CONTROL TRANSMITTER ASSEMBLY
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(a) When a known good registered door control transmitter assembly is used, check that the wireless functions operate properly.
Result
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Proceed to
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Wireless door lock/unlock function operates properly with a known good door control transmitter assembly
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A
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Wireless door lock/unlock function does not operate
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B
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A
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4.
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CHECK TRANSMITTER BATTERY (VOLTAGE)
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(a) Inspect the transmitter battery capacity.
Click here
OK |
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REPLACE DOOR CONTROL TRANSMITTER ASSEMBLY
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5.
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CHECK WAVE ENVIRONMENT
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(a) Bring the door control transmitter assembly near the door control receiver, and perform wireless operation check.
HINT:
-
When the door control transmitter assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
-
If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
OK:
Wireless functions operate properly.
OK |
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END (AFFECTED BY WAVE INTERFERENCE)
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NG
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6.
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SWITCH TO SELF-DIAGNOSTIC MODE
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(a) Switch to self-diagnostic mode.
(1) Insert the key into the ignition key cylinder and remove it.
(2) Within 5 seconds after the key is removed, insert it into the ignition key cylinder and then turn the ignition switch ON then off 1 time. (End in off)
(3) Within 30 seconds of turning the ignition switch off, perform the following 9 times: Turn the ignition switch ON then off. (End in off)
HINT:
Turning the ignition switch ON after the procedure above has been completed will end the self-diagnostic mode.
CAUTION:
If the system fails to enter the self-diagnostic mode, the system will return to normal mode.
(b) Check that the system has switched to self-diagnostic mode by checking the interior light output pattern.
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NEXT
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7.
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CHECK SELF-DIAGNOSTIC MODE
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(a) Check the diagnostic outputs when a door control transmitter assembly switch is pressed. The diagnostic outputs can be checked by the interior light patterns.
Result
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Proceed to
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Normal pattern (interior light output pattern) is output
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A
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Unmatching recognition code is output
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B
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No diagnostic output
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C
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B
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8.
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CHECK REGISTER RECOGNITION CODE
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(a) Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered.
Click here
OK:
Recognition code can be registered.
OK |
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END (GO TO OPERATION CHECK)
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NG
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9.
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REPLACE DOOR CONTROL RECEIVER
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(a) Temporarily replace the door control receiver with a new or known good one.
for Sedan with Tire Pressure Warning System: Click here
for Hatchback: Click here
NEXT
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10.
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REGISTER RECOGNITION CODE
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(a) Perform the Registration procedure.
Click here
NEXT
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11.
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CHECK DOOR CONTROL RECEIVER (OPERATION)
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(a) Check that the doors can be locked and unlocked by the door control transmitter assembly lock and unlock switches.
OK:
Doors can be locked and unlocked by the door control transmitter assembly.
OK |
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END (DOOR CONTROL RECEIVER WAS DEFECTIVE)
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12.
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CHECK DOOR CONTROL RECEIVER (RESPONSE)
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(a) Prepare a door control transmitter assembly from another vehicle.
(b) Press and hold a door control transmitter assembly switch.
(c) Check that an unmatching recognition code is output.
OK:
Unmatching recognition code is output.
OK |
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REPLACE DOOR CONTROL TRANSMITTER ASSEMBLY
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NG
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13.
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CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - POWER SOURCE AND BODY GROUND)
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(a) Disconnect the O171 door control receiver connector.
(b) 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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O171-12 (GND) - Body ground
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Always
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Below 1 Ω
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(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
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Switch Condition
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Specified Condition
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O171-7 (+B) - Body ground
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Ignition switch off
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11 to 14 V
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NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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OK
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14.
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CHECK DOOR CONTROL RECEIVER (OUTPUT)
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(a) Reconnect the O171 door control receiver connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
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Condition
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Specified Condition
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O171-4 (RDA) - Body ground
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Procedure:
-
Remove key from ignition key cylinder
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Close all doors
-
Press lock or unlock switch of door control transmitter assembly
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11 to 14 V → pulse generation
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*a
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Component with harness connected
(Door Control Receiver)
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NG |
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REPLACE DOOR CONTROL RECEIVER
for Sedan with Tire Pressure Warning System: Click here
for Hatchback: Click here
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OK
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15.
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CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - DOOR CONTROL RECEIVER)
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(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(b) Disconnect the O171 door control receiver 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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O171-4 (RDA) - I85-18 (RDA)
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Always
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Below 1 Ω
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O171-5 (PRG) - I85-17 (PRG)
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Always
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Below 1 Ω
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O171-4 (RDA) or I85-18 (RDA) - Other terminals and body ground
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Always
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10 kΩ or higher
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O171-5 (PRG) or I85-17 (PRG) - 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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16.
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REPLACE DOOR CONTROL RECEIVER
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(a) Temporarily replace the door control receiver with a new or known good one.
for Sedan with Tire Pressure Warning System: Click here
for Hatchback: Click here
NEXT
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17.
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REGISTER RECOGNITION CODE
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(a) Perform the Registration procedure.
Click here
NEXT
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18.
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CHECK DOOR CONTROL RECEIVER (OPERATION)
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(a) Check that the doors can be locked and unlocked by the door control transmitter assembly lock and unlock switches.
OK:
Doors can be locked and unlocked by the door control transmitter assembly.
OK |
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END (DOOR CONTROL RECEIVER WAS DEFECTIVE)
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