P060A

DTC Code	DTC Name
P060A	Internal Control Module Monitoring Processor Performance

DESCRIPTION

If the engine stop and start ECU detects that there is an open circuit when signals such as boost, standby request or overheating cannot be sent to the backup boost converter control IC from the stop and start control IC in the engine stop and start ECU.

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

DTC No.	DTC Detection Condition	Trouble Area
P060A	CPU duty error is detected for 1 second or more (2 trip detection logic).	Wire harness or connector Engine stop and start ECU

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CONFIRMATION DRIVING PATTERN

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After troubleshooting, perform the following steps to recheck for DTCs.
Tip:
- 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 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 ignition 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.
1. for Manual Transaxle
  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (Click here).
  4. Start the engine and warm it up.
  5. Drive the vehicle at 7 km/h (4.3 mph) or more.
    
    CAUTION:
    
    When performing the confirmation driving pattern, obey all speed limits and traffic laws.
  6. Stop the vehicle, move the shift lever to neutral and release the clutch pedal.
  7. Keep the engine stopped by stop and start control for 1 second or more.
  8. Depress the clutch pedal and start the engine.
    
    Tip:
    If the engine cranks slowly when the engine is restarted, it can be determined that battery voltage is low.
  9. Check that DTCs are not output (Click here).
2. for CVT
  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (Click here).
  4. Start the engine and warm it up.
  5. Drive the vehicle at 7 km/h (4.3 mph) or more.
    
    CAUTION:
    
    When performing the 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.
    
    Tip:
    If the engine cranks slowly when the engine is restarted, it can be determined that battery voltage is low.
  9. Check that DTCs are not output (Click here).
Check if the stop and start system operates normally.
Tip:
- 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 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 ignition 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. for Manual Transaxle
  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 the confirmation driving pattern, obey all speed limits and traffic laws.
  4. Stop the vehicle, move the shift lever to neutral and release the clutch pedal.
  5. Allow the engine to stop by stop and start control.
  6. Depress the clutch pedal and start the engine.
2. for CVT
  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 the confirmation driving pattern, obey all speed limits and traffic laws.
  4. Depress the brake pedal and stop the vehicle.
  5. Keep the engine stopped by stop and start control for 1 second or more (Keep the shift lever in D).
  6. Release the brake pedal with the shift lever in D to start the engine.

Table 1. *1 MAIN *2 Battery *3 Engine Stop and Start ECU

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU (Click here).
After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU (Click here).
After replacing the engine stop and start ECU or airbag sensor assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU (Click here).
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tip:

Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting (Click here).

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PROCEDURE

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

Disconnect the engine stop and start ECU connector.

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

Standard Voltage

Tester Connection	Condition	Specified Condition
A91-7 (BIN) - Body ground	Always	9.5 to 14 V

Table 2. Text in Illustration
*a	Front view of wire harness connector (to Engine Stop and Start ECU)

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NG
REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the A91 engine stop and start ECU connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
A91-8 (GND) - Body ground	Always	Below 1 Ω

OK
REPLACE ENGINE STOP AND START ECU (Click here)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR

STOP AND START SYSTEM, Diagnostic DTC:P060A