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Caution / Notice / Hint: How To Proceed With Troubleshooting

This document provides a troubleshooting guide for the ASC system in the 2017 models IS200T, IS250, IS300, and IS350. It outlines a step-by-step procedure including checking battery voltage, inspecting the CAN communication system, and checking for diagnostic trouble codes (DTCs). The guide emphasizes using the Techstream tool for diagnostics and includes instructions for confirming repairs and conducting tests.

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letop582005
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We take content rights seriously. If you suspect this is your content, claim it here.
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23 views4 pages

Caution / Notice / Hint: How To Proceed With Troubleshooting

This document provides a troubleshooting guide for the ASC system in the 2017 models IS200T, IS250, IS300, and IS350. It outlines a step-by-step procedure including checking battery voltage, inspecting the CAN communication system, and checking for diagnostic trouble codes (DTCs). The guide emphasizes using the Techstream tool for diagnostics and includes instructions for confirming repairs and conducting tests.

Uploaded by

letop582005
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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4/10/2017 AUDIO / VIDEO: ASC SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2017 MY IS200T IS250 IS300 IS350 [10/2016 ­ ]

Last Modified: 03­28­2017 6.7:8.0.40 Doc ID: RM10000000115QW


Model Year Start: 2017 Model: IS200T Prod Date Range: [10/2016 ­ ]

Title: AUDIO / VIDEO: ASC SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2017 MY IS200T IS250 IS300
IS350 [10/2016 ­ ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT


HINT:
Use the following procedure to troubleshoot the ASC system.
*: Use the Techstream.

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

NEXT

2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

NEXT

3. INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.


Standard Voltage:
11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT

4. INSPECT CAN COMMUNICATION SYSTEM*

https://www.techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType… 1/4
4/10/2017 AUDIO / VIDEO: ASC SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2017 MY IS200T IS250 IS300 IS350 [10/2016 ­ ]

(a) Use the Techstream, check if the CAN communication system is functioning normally.

Click here

RESULT PROCEED TO

CAN communication system DTCs are not output A

CAN communication system DTCs are output B

B GO TO CAN COMMUNICATION SYSTEM

5. CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output.

Click here

Body Electrical > ASC > Trouble Codes

(b) Clear the DTCs.

Click here

Body Electrical > ASC > Clear DTCs

(c) Recheck for DTCs. Try to reproduce the ASC system DTCs by duplicating the conditions indicated by
the DTCs.

Click here

Body Electrical > ASC > Trouble Codes

RESULT PROCEED TO

DTCs are not output A

DTCs are output B

B GO TO DIAGNOSTIC TROUBLE CODE CHART

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4/10/2017 AUDIO / VIDEO: ASC SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2017 MY IS200T IS250 IS300 IS350 [10/2016 ­ ]

6. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

RESULT PROCEED TO

Fault is not listed in Problem Symptoms Table A

Fault is listed in Problem Symptoms Table B

B GO TO PROBLEM SYMPTOMS TABLE

7. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

8. ADJUST, REPAIR OR REPLACE

NEXT

9. CONFIRMATION TEST

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4/10/2017 AUDIO / VIDEO: ASC SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2017 MY IS200T IS250 IS300 IS350 [10/2016 ­ ]

NEXT END

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