AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P061512

DTC Code DTC Name
P061512 Starter Relay Circuit Short to Battery

DESCRIPTION

While the engine is being cranked, battery voltage is applied to terminal STA of the ECM.

If the ECM detects the starter control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and stores this DTC.

This monitor runs when the vehicle is driven at 20 km/h (12.43 mph) or more for 20 seconds or more.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P061512 Starter Relay Circuit Short to Battery

All conditions are met for 20 seconds or more (1-trip detection logic):


  • Battery voltage is 10.5 V or higher.

  • Vehicle speed is 20 km/h (12.43 mph) or more.

  • Engine speed is 1000 rpm or more.

  • STA signal is ON.

  • Starter signal circuit

  • Engine stop and start ECU*1

  • Certification ECU (smart key ECU assembly)*2

  • ECM

 Comes on DTC stored SAE: P0617

CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Drive the vehicle for 20 seconds or more under the following conditions:


    • Engine speed is 1000 rpm or more.

    • Vehicle speed is 20 km/h (12.43 mph) or more.

  7. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

  8. Input the DTC: P061512.

  9. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B006FTKE01
B006B50E04

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

Click here

PROCEDURE


  1. READ VALUE USING GTS (STARTER SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Transmission / Data List / Starter SW.


      Powertrain > Transmission > Data List
      Tester Display
      Starter SW

      Tech Tips

      If the Data List updates slowly, perform measurement after selecting only the "Starter SW" item.

    5. According to the display on the GTS, read the Data List.

      Standard
      Condition Starter SW
      Engine switch on (IG) OFF

    6. According to the display on the GTS, 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.

      CAUTION:

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

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

      Tech Tips

      If the result of either of the above is not as specified, proceed to the next step with the engine switch on (IG), GTS connected and Data List item "Starter SW"selected.

      Result
      Result Proceed to
      OK A
      NG (w/ Stop and Start System) B
      NG (w/o Stop and Start System) C

      Tech Tips

      If the starter assembly operates continuously when the engine switch is turned on (IG), proceed to the next step without reading the Data List item "Starter SW".


    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    C

    INSPECT ST NO. 1 RELAY (CHECK FOR SHORT CIRCUIT) Click here

    B

  2. INSPECT ST NO. 2 RELAY (CHECK FOR SHORT CIRCUIT)


    1. Enter the following menus: Powertrain / Transmission / Data List / Starter SW.


      Powertrain > Transmission > Data List
      Tester Display
      Starter SW

      Tech Tips

      If the Data List updates slowly, perform measurement after selecting only the "Starter SW" item.

    2. Remove the ST NO. 2 relay from the No. 2 engine room relay block.

    3. According to the display on the GTS, read the Data List.

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

      Tech Tips


      • When the result of the above inspection is "The Data List item "Starter SW" does not change from ON", the ST NO. 2 relay is normal.

      • DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.


    B

    REPLACE ST NO. 2 RELAY

    A

  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST NO. 2 RELAY)

    B006EB9C01
    *1 No. 2 Engine Room Relay Block
    *2 ST NO. 2 Relay

    Tech Tips

    The purpose of this step is to check for ST NO. 2 relay terminal voltage under abnormal conditions.


    1. Remove the ST NO. 2 relay from the No. 2 engine room relay block.

    2. Turn the engine switch on (IG).

    3. Measure the voltage between ST NO. 2 relay terminal 2 and body ground.

      Tech Tips


      • 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 engine switch on (IG) and do not install the ST NO. 2 relay.

      • DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

      • If any voltage was measured with the engine switch on (IG), 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

    NEXT

  4. INSPECT ENGINE STOP AND START ECU (CHECK FOR SHORT CIRCUIT)

    B006EB9C01
    *1 No. 2 Engine Room Relay Block
    *2 ST NO. 2 Relay

    1. Disconnect the engine stop and start ECU connector.

    2. Measure the voltage between ST NO. 2 relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

      Result
      Result Proceed to
      The voltage between ST NO. 2 relay terminal 2 and body ground does not change when the connector is disconnected. A
      The voltage between ST NO. 2 relay terminal 2 and body ground changes when the connector is disconnected. B

      Tech Tips


      • If the voltage is the same before and after disconnecting the connector, the engine stop and start ECU is normal.

      • DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.


    B

    REPLACE ENGINE STOP AND START ECU Click here

    A

  5. INSPECT ECM (CHECK FOR SHORT CIRCUIT)

    B006EB9C01
    *1 No. 2 Engine Room Relay Block
    *2 ST NO. 2 Relay

    1. Disconnect the ECM connector.

    2. Measure the voltage between ST NO. 2 relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

      Result
      Result Proceed to
      The voltage between ST NO. 2 relay terminal 2 and body ground does not change when the connector is disconnected. A
      The voltage between ST NO. 2 relay terminal 2 and body ground changes when the connector is disconnected. B

      Tech Tips


      • 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 GTS.


    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR (STA SIGNAL CIRCUIT)

    B

    GO TO STEP 10 Click here

  6. INSPECT ST NO. 1 RELAY (CHECK FOR SHORT CIRCUIT)


    1. Enter the following menus: Powertrain / Transmission / Data List / Starter SW.


      Powertrain > Transmission > Data List
      Tester Display
      Starter SW

    2. Remove the ST NO. 1 relay from the No. 1 engine room relay block and junction block assembly.

    3. According to the display on the GTS, read the Data List.

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

      Tech Tips


      • When the result of the above inspection is "The Data List item "Starter SW" does not change from ON", the ST NO. 1 relay is normal.

      • DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.


    B

    REPLACE ST NO. 1 RELAY

    A

  7. CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST NO. 1 RELAY)

    B006GI5C01
    *1 No. 1 Engine Room Relay Block and Junction Block Assembly
    *2 ST NO. 1 Relay

    Tech Tips

    The purpose of this step is to check for ST NO. 1 relay terminal voltage under abnormal conditions.


    1. Remove the ST NO. 1 relay from the No. 1 engine room relay block and junction block assembly.

    2. Turn the engine switch on (IG).

    3. Measure the voltage between ST NO. 1 relay terminal 2 and body ground.

      Tech Tips


      • 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 engine switch on (IG) and do not install the ST NO. 1 relay.

      • DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

      • If any voltage was measured with the engine switch on (IG), 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

    NEXT

  8. INSPECT ECM (CHECK FOR SHORT CIRCUIT)

    B006GI5C01
    *1 No. 1 Engine Room Relay Block and Junction Block Assembly
    *2 ST NO. 1 Relay

    1. Disconnect the ECM connector.

    2. Measure the voltage between ST NO. 1 relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

      Result
      Result Proceed to
      The voltage between ST NO. 1 relay terminal 2 and body ground does not change when the connector is disconnected. A
      The voltage between ST NO. 1 relay terminal 2 and body ground changes when the connector is disconnected. B

      Tech Tips


      • 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 GTS.


    B

    REPLACE ECM Click here

    A

  9. CHECK HARNESS AND CONNECTOR (ECM - SMART KEY ECU ASSEMBLY - ST NO. 1 RELAY)


    1. Disconnect the ECM connector.

    2. Disconnect the certification ECU (smart key ECU assembly) connector.

    3. Remove the ST NO. 1 relay from the No. 1 engine room relay block and junction block assembly.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A95-16 (STA), A22-9 (STAR), A22-20 (STA) or 2 (ST NO. 1 relay) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK SMART KEY SYSTEM (CHECK FOR STA TERMINAL VOLTAGE OF SMART KEY ECU ASSEMBLY) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM A/T CODE REGISTRATION Click here