Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028LVH |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: NETWORKING: LIN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
HOW TO PROCEED WITH TROUBLESHOOTING
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CAUTION / NOTICE / HINT
HINT:
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Use the following procedure to troubleshoot the LIN communication system.
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*: Use the GTS.
PROCEDURE
1.
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VEHICLE BROUGHT TO WORKSHOP
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NEXT
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2.
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CUSTOMER PROBLEM ANALYSIS
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HINT:
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In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
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Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
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The following 5 items are important points for problem analysis:
What
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Vehicle model, system name
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When
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Date, time, occurrence frequency
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Where
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Road conditions
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Under what conditions?
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Driving conditions, weather conditions
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How did it happen?
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Problem symptoms
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NEXT
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(a) Measure the auxiliary battery voltage with the ignition switch off.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
NEXT
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4.
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INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
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(a) Using the GTS, check for CAN communication system DTCs.
for HV Model: Click here
for Gasoline Model: Click here
Result
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Proceed to
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CAN DTCs are not output
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A
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CAN DTCs are output
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B
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B |
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GO TO CAN COMMUNICATION SYSTEM
for HV Model: Click here
for Gasoline Model: Click here
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A
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5.
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INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*
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(a) Using the GTS, check for LIN communication system DTCs.
Body Electrical > Main Body > Trouble Codes
Body Electrical > Power Source Control > Trouble Codes
Body Electrical > Smart Key > Trouble Codes
Result
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Proceed to
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LIN DTCs are not output
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A
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LIN DTCs are output
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B
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B |
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GO TO DIAGNOSTIC TROUBLE CODE CHART
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A
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6.
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OVERALL ANALYSIS AND TROUBLESHOOTING*
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(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
NEXT
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NEXT
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NEXT |
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END
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