LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 375 (Engine Control System (2ZR-FAE) - Diagnostic Codes (6 Of 8)) >> SFI System >> DTC P1603: Engine Stall History [01/2019 - 03/2019] >> Procedure

DTC P1603: Engine Stall History [01/2019 - 03/2019]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR ANY OTHER DTCS OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes 

      Result

      Result Proceed to
      Only DTC P1603 is output A
      DTCs other than P1603 are output B

      HINT: 

      • When DTC P1603 and P1605 are output simultaneously, perform the troubleshooting for P1605 first.
      • Using Freeze Frame Data, confirm the conditions the moment the DTC was stored and after the DTC was stored. This information can be useful when troubleshooting.

    Result: 

    B 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [01/2019 - 03/2019] 

    Result: 

    A 

    See step  2

  2. READ FREEZE FRAME DATA (ISC LEARNING VALUE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Using the Techstream, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

      Powertrain > Engine and ECT > DTC (P1603) > Freeze Frame Data 

      Tester Display
      ISC Learning Value

      Result

      Freeze Frame Data Item for DTC P1603 Result Suspected Area Action Proceed to
      ISC Learning Value Less than 6.2 L/s - Go to the next step A
      6.2 L/s or higher Throttle body assembly Go to Engine Stalls (from step 11) B

    Result: 

    B 

    GO TO ENGINE STALLS. Refer to  Engine Stalls [01/2019 - 11/2022] 

    Result: 

    A 

    See step  3

  3. READ FREEZE FRAME DATA (AFS VOLTAGE B1S1, SHORT FT B1S1 AND LONG FT B1S1) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Using the Techstream, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

      Powertrain > Engine and ECT > DTC (P1603) > Freeze Frame Data 

      Tester Display
      AFS Voltage B1S1
      Short FT B1S1
      Long FT B1S1

      Result

      Freeze Frame Data Item for DTC P1603 Suspected Area Action Proceed to
      AFS Voltage B1S1 Short FT B1S1 Long FT B1S1
      2.8 V to 3.8 V -15% to 15% -15% to 15% - Go to Engine Stalls NEXT
      3.8 V or higher 15% or higher - Fuel pump Go to Engine Stalls (from step 20)
      Less than 2.8 V, or 3.8 V or higher Less than -15%, or 15% or more Less than -15%, or 15% or more
      • Mass air flow meter sub-assembly
      • Air fuel ratio sensor
      • Fuel pump
      		 Go to Engine Stalls (from step 15)*

      HINT: 

      *: If the value of AFS Voltage B1S1, Short FT B1S1 or Long FT B1S1 is as specified, malfunction of a component listed in the "Suspected Area" column of the table is suspected.

    Result: 

    NEXT 

    GO TO ENGINE STALLS. Refer to  Engine Stalls [01/2019 - 11/2022] 

scientia non olet · About LEMON Manuals