STOP AND START SYSTEM, Diagnostic DTC:P060A

DESCRIPTION

The engine stop and start ECU can detect open circuits when signals such as the boost, standby request or overheating signal cannot be sent to the backup boost converter control IC from the stop and start control IC in the engine stop and start ECU.

If a CPU duty malfunction is detected, the engine stop and start ECU stores DTC P060A and blinks the stop and start cancel indicator light.

CONFIRMATION DRIVING PATTERN

1. Tech Tips

   
   

   • If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.

     In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item [Status of Battery Charge Control] changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (52°F) or higher, the refresh charge will be completed.)

   • If the GTS is not available and the Data List item [Status of Battery Charge Control] cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

     If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

   • After the refresh charge completes, turn the engine switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.

   • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.

   CONFIRMATION AFTER TROUBLESHOOTING

   
   

   1. Connect the GTS to the DLC3.

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

   3. Clear the DTCs.

      Click here

      
      Powertrain > Stop and Start > Clear DTCs

   4. Start the engine and warm it up.

   5. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

   6. Depress the brake pedal and stop the vehicle.

   7. Keep the engine stopped by stop and start control for 1 second or more. (Keep the shift lever in D.)

   8. Release the brake pedal with the shift lever in D to start the engine.

   9. Check that DTCs are not output.

      Click here

      
      Powertrain > Stop and Start > Trouble Codes

2. STOP AND START SYSTEM OPERATION CHECK

   Tech Tips

   
   

   • If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.

     In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item [Status of Battery Charge Control] changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (52°F) or higher, the refresh charge will be completed.)

   • If the GTS is not available and the Data List item [Status of Battery Charge Control] cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

     If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

   • After the refresh charge completes, turn the engine switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.

   
   

   1. Start the engine and warm it up.

   2. Turn the air conditioning system off.

   3. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

   4. Depress the brake pedal and stop the vehicle.

   5. Allow the engine to stop by stop and start control. (Keep the shift lever in D.)

   6. Release the brake pedal with the shift lever in D to start the engine.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BATTERY)

   
   

   1. Disconnect the engine stop and start ECU connector.

   2. 

      *a	Front view of wire harness connector (to Engine Stop and Start ECU)

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

      Standard Voltage
      Tester Connection Condition Specified Condition A65-1 (BIN2) - Body ground Always 9.5 to 14 V A65-3 (BIN1) - Body ground Always 9.5 to 14 V

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

2. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BODY GROUND)

   
   

   1. Disconnect the A65 engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A65-2 (GND2) - Body ground Always Below 1 Ω A65-8 (GND1) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE ENGINE STOP AND START ECU Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR