| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001ANK2 |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2019 - 2022 MY Avalon HV [04/2018 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer and confirm the problem.
Click here
![2019 - 2022 MY Avalon Avalon HV [04/2018 - ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
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3. |
CHECK DTC AND FREEZE FRAME DATA* |
(a) Check and record DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
Chassis > ABS/VSC/TRAC > Trouble Codes
(b) Clear the DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
Chassis > ABS/VSC/TRAC > Clear DTCs
(c) Reconfirm the DTCs.
(1) Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.
Chassis > ABS/VSC/TRAC > Trouble Codes
HINT:
-
When CAN communication system DTCs are output, repair the CAN communication system first.
Click here
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If DTCs U0124, U0126, U0151 and/or U0293 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit.
Click here
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If the Techstream cannot communicate with the skid control ECU (brake booster with master cylinder assembly), inspect the CAN communication system.
Click here
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If there is no response from the skid control ECU (brake booster with master cylinder assembly), inspect the IG1 circuit of the skid control ECU (brake booster with master cylinder assembly).
for C1241: Click here
for C1242: Click here
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Result |
Proceed to |
|---|---|
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DTCs are output. |
A |
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DTCs are not output. (Problem symptom does not occur.) |
B |
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DTCs are not output. (Problem symptom occurs.) |
C |
| B |
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| C |
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4. |
DIAGNOSTIC TROUBLE CODE CHART |
(a) Proceed to Diagnostic Trouble Code Chart.
Click here
| NEXT |
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5. |
SYMPTOM SIMULATION |
(a) Proceed to How to Proceed with Troubleshooting.
Click here
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6. |
PROBLEM SYMPTOMS TABLE |
(a) Proceed to Problem Symptoms Table.
Click here
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7. |
CIRCUIT INSPECTION* |
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8. |
IDENTIFICATION OF PROBLEM |
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9. |
REPAIR OR REPLACEMENT |
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10. |
RECONFIRM DTC* |
(a) Clear the DTCs.
Click here
Chassis > ABS/VSC/TRAC > Clear DTCs
(b) Check if the same DTCs are output.
Click here
Chassis > ABS/VSC/TRAC > Trouble Codes
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Result |
Proceed to |
|---|---|
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DTCs are not output. |
A |
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DTCs are output. |
B |
| B |
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REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
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11. |
CONFIRMATION TEST* |
| NEXT |
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END |
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