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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 374 (Engine Control System (2ZR-FAE) - Diagnostic Codes (5 Of 8)) >> SFI System >> DTC P0617: Starter Relay Circuit High [01/2019 - 03/2019] >> Procedure

DTC P0617: Starter Relay Circuit High [01/2019 - 03/2019]: Procedure

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  1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
    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 / Data List / Starter Signal.

      Powertrain > Engine and ECT > Data List 

      Tester Display
      Starter Signal
    5. According to the display on the Techstream, read the Data List.

      Standard

      Condition Starter Signal
      Ignition switch ON OFF
    6. According to the display on the Techstream, read the Data List while the vehicle is being driven with an engine speed of 1000 rpm or more at a vehicle speed of 20 km/h (12.43 mph) or more.
      WARNING:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

      Standard

      Condition Starter Signal
      Driving at 20 km/h (12.43 mph) or more (engine speed 1000 rpm or more) OFF

      Result

      Result  Proceed to
      OK A
      NG (w/ Smart Key System) B
      NG (w/o Smart Key System) C

      HINT: 

      • If the result of either of the above is not as specified, proceed to the next step with the ignition switch to ON, Techstream connected and Data List item "Starter Signal" selected.
      • If the starter assembly operates continuously when the ignition switch is turned to ON, proceed to the next step without reading the Data List item "Starter Signal".

    Result: 

    A 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [01/2019 - 11/2022] 

    Result: 

    C 

    See step  7

    Result: 

    B 

    See step  2

  2. INSPECT ST RELAY (CHECK FOR SHORT CIRCUIT) 
    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 / Data List / Starter Signal.

      Powertrain > Engine and ECT > Data List 

      Tester Display
      Starter Signal
    5. Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.
    6. According to the display on the Techstream, read the Data List.

      Result

      Result Proceed to
      The Data List item "Starter Signal" does not change from ON A
      The Data List item "Starter Signal" changes from ON to OFF B

      HINT: 

      • When the result of the above inspection is "The Data List item "Starter Signal" does not change from ON", the ST relay is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    B 

    REPLACE ST RELAY 

    Result: 

    A 

    See step  3

  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST RELAY) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay

    HINT: 

    The purpose of this step is to check for ST relay terminal voltage under abnormal conditions.

    1. Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.
    2. Turn the ignition switch to ON.
    3. Measure the voltage between ST relay terminal 1 and body ground.

      HINT: 

      • Make a note of the measured voltage as it will be necessary for the inspecting the change in voltage in the next step. As the next step should be conducted under the same conditions, keep the ignition switch ON and do not install the ST relay.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.
      • If any voltage was measured with the ignition switch ON, one of the following malfunctions is suspected:
        • Short to +B in the circuit of a connected ECU or the switch.
        • Short to +B in the wire harness.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (CHECK FOR SHORT CIRCUIT) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay
    1. Disconnect the park/neutral position switch assembly connector.
    2. Measure the voltage between ST relay terminal 1 and body ground and compare it to the voltage measured in the previous step.

      Result

      Result Proceed to
      The voltage between ST relay terminal 1 and body ground does not change when the connector is disconnected. A
      The voltage between ST relay terminal 1 and body ground changes when the connector is disconnected. B

      HINT: 

      • If the voltage is the same before and after disconnecting the connector, the park/neutral position switch assembly is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    B 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to  REMOVAL [01/2019 - 03/2019] 

    Result: 

    A 

    See step  5

  5. INSPECT ECM (CHECK FOR SHORT CIRCUIT) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay
    1. Disconnect the ECM connector.
    2. Measure the voltage between ST relay terminal 1 and body ground and compare it to the voltage measured in the previous step.

      Result

      Result Proceed to
      The voltage between ST relay terminal 1 and body ground does not change when the connector is disconnected. A
      The voltage between ST relay terminal 1 and body ground changes when the connector is disconnected. B

      HINT: 

      • If the voltage is the same before and after disconnecting the connector, the ECM is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [01/2019 - 03/2019] 

    Result: 

    A 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - SMART KEY ECU ASSEMBLY - ST RELAY) 
    1. Disconnect the ECM connector.
    2. Disconnect the park/neutral position switch assembly connector.
    3. Disconnect the certification ECU (smart key ECU assembly) connector.
    4. Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A46-29 (STA), C62-9 (L), O62-1 (STA) or 1 (ST relay) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK SMART KEY SYSTEM (CHECK FOR STA TERMINAL VOLTAGE OF SMART KEY ECU ASSEMBLY). Refer to  TERMINALS OF ECU [01/2019 - 04/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  7. INSPECT ST RELAY (CHECK FOR SHORT CIRCUIT) 
    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 / Data List / Starter Signal.

      Powertrain > Engine and ECT > Data List 

      Tester Display
      Starter Signal
    5. Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.
    6. According to the display on the Techstream, read the Data List.

      Result

      Result Proceed to
      The Data List item "Starter Signal" does not change from ON A
      The Data List item "Starter Signal" changes from ON to OFF B

      HINT: 

      • When the result of the above inspection is "The Data List item "Starter Signal" does not change from ON", the ST relay is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    B 

    REPLACE ST RELAY 

    Result: 

    A 

    See step  8

  8. CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST RELAY) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay

    HINT: 

    The purpose of this step is to check for ST relay terminal voltage under abnormal conditions.

    1. Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.
    2. Turn the ignition switch to ON.
    3. Measure the voltage between ST relay terminal 1 and body ground.

      HINT: 

      • Make a note of the measured voltage as it will be necessary for the inspecting the change in voltage in the next step. As the next step should be conducted under the same conditions, keep the ignition switch ON and do not install the ST relay.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.
      • If any voltage was measured with the ignition switch ON, one of the following malfunctions is suspected:
        • Short to +B in the circuit of a connected ECU or the switch.
        • Short to +B in the wire harness.

      Result

      Result Proceed to
      NEXT (for CVT models) A
      NEXT (for Manual Transaxle models) B

    Result: 

    B 

    See step  11

    Result: 

    A 

    See step  9

  9. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (CHECK FOR SHORT CIRCUIT) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay
    1. Disconnect the park/neutral position switch assembly connector.
    2. Measure the voltage between ST relay terminal 1 and body ground and compare it to the voltage measured in the previous step.

      Result

      Result Proceed to
      The voltage between ST relay terminal 1 and body ground does not change when the connector is disconnected. A
      The voltage between ST relay terminal 1 and body ground changes when the connector is disconnected. B

      HINT: 

      • If the voltage is the same before and after disconnecting the connector, the park/neutral position switch assembly is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    B 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to  REMOVAL [01/2019 - 03/2019] 

    Result: 

    A 

    See step  10

  10. INSPECT ECM (CHECK FOR SHORT CIRCUIT) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay
    1. Disconnect the ECM connector.
    2. Measure the voltage between ST relay terminal 1 and body ground and compare it to the voltage measured in the previous step.

      Result

      Result Proceed to
      The voltage between ST relay terminal 1 and body ground does not change when the connector is disconnected. A
      The voltage between ST relay terminal 1 and body ground changes when the connector is disconnected. B

      HINT: 

      • If the voltage is the same before and after disconnecting the connector, the ECM is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY) 

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [01/2019 - 03/2019] 

  11. INSPECT CLUTCH START SWITCH ASSEMBLY (CHECK FOR SHORT CIRCUIT) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay
    1. Disconnect the clutch start switch assembly connector.
    2. Measure the voltage between ST relay terminal 1 and body ground and compare it to the voltage measured in the previous step.

      Result

      Result Proceed to
      The voltage between ST relay terminal 1 and body ground does not change when the connector is disconnected. A
      The voltage between ST relay terminal 1 and body ground changes when the connector is disconnected. B

      HINT: 

      • If the voltage is the same before and after disconnecting the connector, the clutch start switch assembly is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    B 

    REPLACE CLUTCH START SWITCH ASSEMBLY. Refer to  PROCEDURE - Step 3 

    Result: 

    A 

    See step  12

  12. INSPECT ECM (CHECK FOR SHORT CIRCUIT) 
    GTY830844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 ST Relay
    1. Disconnect the ECM connector.
    2. Measure the voltage between ST relay terminal 1 and body ground and compare it to the voltage measured in the previous step.

      Result

      Result Proceed to
      The voltage between ST relay terminal 1 and body ground does not change when the connector is disconnected. A
      The voltage between ST relay terminal 1 and body ground changes when the connector is disconnected. B

      HINT: 

      • If the voltage is the same before and after disconnecting the connector, the ECM is normal.
      • DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.

    Result: 

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - CLUTCH START SWITCH ASSEMBLY - ST RELAY) 

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [01/2019 - 03/2019] 

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