How To Proceed With Troubleshooting [08/2013 - ]
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
*: Use the Techstream.
- VEHICLE BROUGHT TO WORKSHOP
NEXT: Go to next step
- CUSTOMER PROBLEM ANALYSIS
- Interview the customer and confirm the problem. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
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NEXT: Go to next step
- Interview the customer and confirm the problem. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
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- CHECK DTC AND FREEZE FRAME DATA*
- Check and record DTCs and Freeze Frame Data.
- Clear the DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR [08/2013 - ] for DTC Check/Clear, and. Refer to FREEZE FRAME DATA [08/2013 - ] for Freeze Frame Data).
- Reconfirm the DTCs.
- Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR [08/2013 - ] for DTC Check/Clear, and. Refer to FREEZE FRAME DATA [08/2013 - ] for Freeze Frame Data).
HINT:
- When DTCs indicating CAN communication system malfunctions are output, repair the CAN communication system first. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] .
- If DTCs U0123/62, U0124/95, U0126/63, and/or U0293/59 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit. Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2013 - ] .
- If the Techstream cannot communicate with the skid control ECU (brake booster with master cylinder assembly), inspect the CAN communication system. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] .
- 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). Refer to DTC C1241/41: Low Battery Positive Voltage; DTC C1242/42: Open in IG1 / IG2 Power Source Circuit [08/2013 - ] .
Result
Result Proceed to DTCs are output. A DTCs are not output. (Problem symptom does not occur.) B DTCs are not output. (Problem symptom occurs.) C
B → Go to step 5
C → Go to step 6
A: Go to next step
- Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data. Refer to DTC CHECK / CLEAR [08/2013 - ] for DTC Check/Clear, and. Refer to FREEZE FRAME DATA [08/2013 - ] for Freeze Frame Data).
- DIAGNOSTIC TROUBLE CODE CHART
- Proceed to Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ] .
NEXT → Go to step 7
- Proceed to Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ] .
- SYMPTOM SIMULATION
- Proceed to How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
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NEXT: Go to next step
- Proceed to How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
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- PROBLEM SYMPTOMS TABLE
- Proceed to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ] .
NEXT: Go to next step
- Proceed to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ] .
- CIRCUIT INSPECTION*
NEXT: Go to next step
- IDENTIFICATION OF PROBLEM
NEXT: Go to next step
- REPAIR OR REPLACEMENT
NEXT: Go to next step
- CONFIRMATION TEST*
NEXT → END