How To Proceed With Troubleshooting [10/2020 - ]: Procedure

Result

Result: 

NEXT 

See step  2

1. Interview the customer and confirm the problem.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 08/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check and record DTCs and Freeze Frame Data.

   for DTC Check / Clear: Refer to DTC CHECK / CLEAR [10/2020 - ] 

   for Freeze Frame Data: Refer to FREEZE FRAME DATA [10/2020 - 08/2021] , or refer to FREEZE FRAME DATA [08/2021 - ] 

   Chassis > Brake > Trouble Codes 

2. Clear the DTCs and Freeze Frame Data.

   for DTC Check / Clear: Refer to DTC CHECK / CLEAR [10/2020 - ] 

   for Freeze Frame Data: Refer to FREEZE FRAME DATA [10/2020 - 08/2021] , or refer to FREEZE FRAME DATA [08/2021 - ] 

   Chassis > Brake > Clear DTCs 

3. Reconfirm the DTCs.
   1. Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.

      for DTC Check / Clear: Refer to DTC CHECK / CLEAR [10/2020 - ] 

      for Freeze Frame Data: Refer to FREEZE FRAME DATA [10/2020 - 08/2021] , or refer to FREEZE FRAME DATA [08/2021 - ] 

      Chassis > Brake > Trouble Codes 

      HINT: 

      • When CAN communication system DTCs are output, repair the CAN communication system first.

        Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ]

      • If DTC U0100-87, U0125-87 and/or U0126-87 are among the CAN communication DTCs that are output, first use the Data List to check for a momentary open circuit.

        Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2020 - ] 

      • If the Techstream cannot communicate with the skid control ECU (brake actuator assembly), inspect the CAN communication system.

        Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ]

      • If there is no response from the skid control ECU (brake actuator assembly), inspect the IG1 circuit and +BS circuit of the skid control ECU (brake actuator assembly).

        Refer to TERMINALS OF ECU [10/2020 - ] 

   Result

   Result	Proceed to
   DTCs are not output. (Problem symptom occurs.)	A
   DTCs are output.	B
   DTCs are not output. (Problem symptom does not occur.)	C

Result: 

B 

See step  10

Result: 

C 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 08/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - ] 

Result: 

A 

See step  4

1. Check if the problem symptoms are listed in the problem symptoms table.

   Refer to PROBLEM SYMPTOMS TABLE [10/2020 - ] 

   Result

   Result	Proceed to
   The problem symptoms are not listed in the problem symptoms table.	A
   The problem symptoms are listed in the problem symptoms table.	B

Result: 

B 

See step  9

Result: 

A 

See step  5

1. DATA LIST / ACTIVE TEST

   Refer to DATA LIST / ACTIVE TEST [10/2020 - 08/2021] , or refer to DATA LIST / ACTIVE TEST [08/2021 - ]

2. ON-VEHICLE INSPECTION

   Refer to ON-VEHICLE INSPECTION [10/2020 - ]

3. TERMINALS OF ECU

   Refer to TERMINALS OF ECU [10/2020 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

Result

Result: 

NEXT 

See step  7

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2020 - ] 

   Chassis > Brake > Clear DTCs 

2. Turn the ignition switch off.
3. Turn the ignition switch to ON.
4. Check if the same DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2020 - ] 

   Chassis > Brake > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output.	B

Result: 

B 

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2020 - 08/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ] 

Result: 

A 

See step  8

Result

Result: 

NEXT 

END 

1. Confirm the problem symptoms table and perform troubleshooting.

   Refer to PROBLEM SYMPTOMS TABLE [10/2020 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Confirm the diagnostic trouble code chart and perform troubleshooting.

   Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2020 - 08/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7