Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001O5YP |
Model Year Start: 2021 |
Model: Corolla |
Prod Date Range: [04/2020 - 09/2022] |
Title: NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): Vehicle Approaching Sound ECU Communication Stop Mode; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022] |
Vehicle Approaching Sound ECU Communication Stop Mode
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DESCRIPTION
Detection Item
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Symptom
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Trouble Area
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Vehicle Approaching Sound ECU Communication Stop Mode
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Any of the following conditions are met:
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Communication stop for "Vehicle Proximity Notification System" is indicated on the "Communication Bus Check" screen of the Techstream.
Click here
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Communication stop history for "Vehicle Proximity Notification System" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Vehicle Proximity Notification System" is 6 or more.)
Click here
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Communication system DTCs (DTCs that start with U) that correspond to "Vehicle Approaching Sound ECU Communication Stop Mode" in "DTC Combination Table" are output.
Click here
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Vehicle approaching speaker controller branch line or connector
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Power source circuit of vehicle approaching speaker controller
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Vehicle approaching speaker controller ground circuit
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Vehicle approaching speaker controller
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
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Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
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When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.
PROCEDURE
1.
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CHECK FOR OPEN IN CAN BUS LINES (VEHICLE APPROACHING SPEAKER CONTROLLER BRANCH LINE)
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(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the O138 vehicle approaching speaker controller 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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O138-3 (CANH) - O138-4 (CANL)
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Cable disconnected from negative (-) auxiliary battery terminal
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54 to 69 Ω
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*a
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Front view of wire harness connector
(to Vehicle Approaching Speaker Controller)
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|
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NG |
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REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER)
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OK
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2.
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CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
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(a) 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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O138-6 (GND) - Body ground
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Cable disconnected from negative (-) auxiliary battery terminal
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Below 1 Ω
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*a
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Front view of wire harness connector
(to Vehicle Approaching Speaker Controller)
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|
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(b) Reconnect the cable to the negative (-) auxiliary battery terminal.
(c) 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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O138-1 (IG) - Body ground
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Power switch on (IG)
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11 to 14 V
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NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
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