RM38T0EC _51 Engine / Hybrid System _115233 STOP AND START _0510781 STOP AND START SYSTEM C

STOP AND START  STOP AND START SYSTEM  P061519  Starter Relay Circuit Current Above Threshold  


DESCRIPTION

When the engine is started by stop and start control, the engine stop and start ECU controls the starter assembly by activating the ST relay (for starter pinion operation) via voltage from terminal STA.

If overcurrent is detected in the starter relay circuit, the engine stop and start ECU stores DTC P061519 and blinks the stop and start cancel indicator.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
P061519 Starter Relay Circuit Current Above Threshold Both of the following conditions are met for 1 second (1 trip detection logic):
·

Ignition switch ON.

·

Overcurrent to ST relay is detected.


·

Wire harness or connector

·

ST relay

·

Engine stop and start ECU


Blinks SAE Code: P0617

CONFIRMATION DRIVING PATTERN

CONFIRMATION AFTER TROUBLESHOOTING


HINT:
·

If the cable is disconnected from the auxiliary 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 auxiliary 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 auxiliary 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.



a.

Clear the DTCs.

Powertrain > Stop and Start > Clear DTCs
50002 392

b.

Start the engine and warm it up.


c.

Drive the vehicle at 7 km/h (4 mph) or more.

CAUTION:

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



d.

Depress the brake pedal and stop the vehicle.


e.

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


f.

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


g.

Check that DTCs are not output.

Powertrain > Stop and Start > Trouble Codes
50001 392


STOP AND START SYSTEM OPERATION CHECK


Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>OPERATION CHECK


WIRING DIAGRAM

Production Date from 2022/01 to 2023/04


A576361E01
2.208,3.146 2.594,3.438 0.385,0.292 10 false ST 0.344,3.521 1.177,3.813 0.833,0.292 10 false BATT-MAIN 2.073,7.74 2.708,7.969 0.635,0.229 10 false ECM 0.458,6.5 1.688,6.698 1.229,0.198 10 false Auxiliary Battery 0.688,8.469 2.885,8.698 2.198,0.229 10 false : CAN Communication Line 2.635,5.313 3.865,5.51 1.229,0.198 10 false ST 4.094,2.229 4.594,2.396 0.5,0.167 10 false C62 4.094,2.406 5.438,2.865 1.344,0.458 10 false Park/Neutral Position Switch Assembly 0.844,5.01 2.073,5.208 1.229,0.198 10 false Starter Assembly 5.625,6.708 6.854,6.906 1.229,0.198 10 false I230 5.625,7.156 6.854,7.354 1.229,0.198 10 false I230 5.927,7.594 6.969,8.26 1.042,0.667 10 false Engine Stop and Start ECU 4.365,0.542 5.594,0.74 1.229,0.198 10 false BBC NO. 1 4.385,1.125 5.615,1.323 1.229,0.198 10 false BBC NO. 2 5.99,0.365 6.625,0.667 0.635,0.302 10 false BIN1 5.99,0.979 6.625,1.281 0.635,0.302 10 false BIN2 5.99,1.594 6.625,1.896 0.635,0.302 10 false CLL 5.99,5.844 6.625,6.146 0.635,0.302 10 false DGND 6.01,6.271 6.646,6.573 0.635,0.302 10 false STA 5.583,1.583 6.219,1.885 0.635,0.302 10 false A169 5.594,5.385 6.229,5.688 0.635,0.302 10 false A168 5.583,0.375 6.219,0.677 0.635,0.302 10 false A168 5.583,0.969 6.219,1.271 0.635,0.302 10 false A168 5.583,6.281 6.219,6.583 0.635,0.302 10 false A169 2.573,1.594 3.802,1.792 1.229,0.198 10 false STAR 2.656,1.99 3.885,2.188 1.229,0.198 10 false STA 3.01,1.51 3.396,1.802 0.385,0.292 10 false 10 0.635,4.365 1.865,4.563 1.229,0.198 10 false C111 1.052,4.365 1.406,4.583 0.354,0.219 10 false B 1.75,4.615 2.167,4.844 0.417,0.229 10 false C132 0.74,4.156 1.969,4.354 1.229,0.198 10 false 1 2.365,6.281 3.594,6.479 1.229,0.198 10 false STA 2.323,5.844 3.552,6.042 1.229,0.198 10 false NSW 2.271,6.729 3.5,6.927 1.229,0.198 10 false CANH 2.292,7.177 3.521,7.375 1.229,0.198 10 false CANL 5.979,7.146 6.708,7.469 0.729,0.323 10 false CANL 5.979,6.708 6.51,6.99 0.531,0.281 10 false CANH 5.698,0.188 6.198,0.5 0.5,0.313 10 false 3 5.688,0.802 6.188,1.115 0.5,0.313 10 false 1 5.688,1.385 6.188,1.698 0.5,0.313 10 false 17 5.688,5.188 6.198,5.5 0.51,0.313 10 false 2 5.677,6.083 6.177,6.396 0.5,0.313 10 false 21 5.667,6.521 6.167,6.833 0.5,0.313 10 false 13 5.656,6.969 6.156,7.281 0.5,0.313 10 false 14 2.313,4.51 3.542,4.708 1.229,0.198 10 false 3 3.031,4.865 4.26,5.063 1.229,0.198 10 false 2 3.031,4.51 4.26,4.708 1.229,0.198 10 false 5 2.313,4.865 3.542,5.063 1.229,0.198 10 false 1 2.771,5.719 3.271,6.031 0.5,0.313 10 false 23 2.75,7 3.25,7.313 0.5,0.313 10 false 18 2.76,6.177 3.26,6.49 0.5,0.313 10 false 30 2.781,6.552 3.281,6.865 0.5,0.313 10 false 8 4.865,0.26 5.365,0.573 0.5,0.313 10 false 2 4.427,0.26 4.927,0.573 0.5,0.313 10 false 1 4.865,0.865 5.365,1.177 0.5,0.313 10 false 2 4.427,0.875 4.927,1.188 0.5,0.313 10 false 1 0.083,0.052 2.635,0.292 2.552,0.24 12 false w/ Smart Entry and Start System: 0.542,2.365 3.469,2.594 2.927,0.229 10 false Certification ECU (Smart Key ECU Assembly) 1.49,4.615 2.719,4.813 1.229,0.198 10 false ST 5.99,5.375 6.625,5.677 0.635,0.302 10 false GND2 5.99,4.958 6.625,5.26 0.635,0.302 10 false GND1 5.594,5.833 6.229,6.135 0.635,0.302 10 false A169 5.583,4.958 6.219,5.26 0.635,0.302 10 false A168 5.698,5.635 6.208,5.948 0.51,0.313 10 false 6 5.677,4.74 6.188,5.052 0.51,0.313 10 false 8 5.094,1.896 6.323,2.094 1.229,0.198 10 false 4 4.198,1.896 5.427,2.094 1.229,0.198 10 false 5 4.385,1.896 5.615,2.094 1.229,0.198 10 false L 4.917,1.896 6.146,2.094 1.229,0.198 10 false B 1.885,4.417 2.219,4.656 0.333,0.24 10 false 2 0.552,2.188 1.167,2.385 0.615,0.198 10 false I223 2.073,7.573 2.531,7.771 0.458,0.198 10 false A47 3.042,1.885 3.427,2.167 0.385,0.281 10 false 3

A576362E01
2.188,3.135 2.927,3.406 0.74,0.271 10 false ST 0.354,3.542 1.583,3.74 1.229,0.198 10 false BATT-MAIN 2.052,7.729 2.521,7.99 0.469,0.26 10 false ECM 0.469,6.469 1.698,6.667 1.229,0.198 10 false Auxiliary Battery 0.688,8.448 2.885,8.677 2.198,0.229 10 false : CAN Communication Line 2.615,5.458 3.844,5.656 1.229,0.198 10 false ST 4.042,2.25 5.052,2.521 1.01,0.271 10 false C62 0.844,5.01 2.073,5.208 1.229,0.198 10 false Starter Assembly 5.594,6.281 6.823,6.479 1.229,0.198 10 false A169 5.625,6.719 6.854,6.917 1.229,0.198 10 false I230 5.927,7.573 6.99,8.323 1.063,0.75 10 false Engine Stop and Start ECU 4.354,0.531 5.583,0.729 1.229,0.198 10 false BBC NO. 1 4.354,1.125 5.583,1.323 1.229,0.198 10 false BBC NO. 2 5.99,0.375 6.625,0.677 0.635,0.302 10 false BIN1 5.99,0.979 6.625,1.281 0.635,0.302 10 false BIN2 5.99,1.583 6.625,1.885 0.635,0.302 10 false CLL 5.99,5.385 6.625,5.688 0.635,0.302 10 false GND2 6,6.271 6.635,6.573 0.635,0.302 10 false STA 5.594,1.583 6.229,1.885 0.635,0.302 10 false A169 5.583,4.969 6.219,5.271 0.635,0.302 10 false A168 5.583,0.385 6.219,0.688 0.635,0.302 10 false A168 5.594,0.979 6.229,1.281 0.635,0.302 10 false A168 5.604,5.833 6.24,6.135 0.635,0.302 10 false A169 2.229,1.896 3.458,2.094 1.229,0.198 10 false I12 2.219,2.052 3.323,2.635 1.104,0.583 10 false Ignition or Starter Switch Assembly 2.323,1.479 3.552,1.677 1.229,0.198 10 false AM1 2.906,1.479 4.135,1.677 1.229,0.198 10 false ST1 2.146,1.479 3.375,1.677 1.229,0.198 10 false 7 3.24,1.479 4.469,1.677 1.229,0.198 10 false 5 0.646,4.354 1.406,4.604 0.76,0.25 10 false C111 1.052,4.354 1.49,4.625 0.438,0.271 10 false B 1.75,4.625 2.208,4.875 0.458,0.25 10 false C132 0.76,4.135 1.188,4.427 0.427,0.292 10 false 1 2.375,6.271 3.604,6.469 1.229,0.198 10 false STA 2.333,5.844 3.563,6.042 1.229,0.198 10 false NSW 2.281,6.719 3.51,6.917 1.229,0.198 10 false CANH 2.302,7.188 3.531,7.385 1.229,0.198 10 false CANL 5.99,7.156 6.719,7.479 0.729,0.323 10 false CANL 5.99,6.708 6.521,6.99 0.531,0.281 10 false CANH 5.698,0.188 6.198,0.5 0.5,0.313 10 false 3 5.688,0.802 6.188,1.115 0.5,0.313 10 false 1 5.688,1.385 6.188,1.698 0.5,0.313 10 false 17 5.688,4.76 6.198,5.073 0.51,0.313 10 false 8 5.698,5.625 6.198,5.938 0.5,0.313 10 false 6 5.656,6.521 6.156,6.833 0.5,0.313 10 false 13 5.656,6.979 6.156,7.292 0.5,0.313 10 false 14 2.313,4.531 3.542,4.729 1.229,0.198 10 false 3 2.313,4.875 3.542,5.073 1.229,0.198 10 false 1 3.031,4.521 4.26,4.719 1.229,0.198 10 false 5 3.031,4.875 4.26,5.073 1.229,0.198 10 false 2 2.76,6.188 3.26,6.5 0.5,0.313 10 false 30 2.76,5.729 3.26,6.042 0.5,0.313 10 false 23 2.802,6.573 3.302,6.885 0.5,0.313 10 false 8 4.896,0.281 5.396,0.594 0.5,0.313 10 false 2 4.417,0.281 4.917,0.594 0.5,0.313 10 false 1 4.885,0.885 5.385,1.198 0.5,0.313 10 false 2 1.646,1.76 2.344,2.073 0.698,0.313 10 false AM2 0.448,1.771 1.677,1.969 1.229,0.198 10 false INP STD NO. 3 4.042,2.427 5.354,2.823 1.313,0.396 10 false Park/Neutral Position Switch Assembly 0.083,0.063 2.771,0.323 2.688,0.26 12 false w/o Smart Entry and Start System: 1.875,4.427 2.219,4.771 0.344,0.344 10 false 2 1.49,4.625 2.188,4.917 0.698,0.292 10 false ST 2.76,7.01 3.26,7.323 0.5,0.313 10 false 18 4.906,1.885 5.25,2.156 0.344,0.271 10 false B 4.375,1.885 4.729,2.219 0.354,0.333 10 false L 4.198,1.885 4.521,2.083 0.323,0.198 10 false 5 5.094,1.885 5.458,2.208 0.365,0.323 10 false 4 5.625,7.156 6.083,7.448 0.458,0.292 10 false I230 5.667,6.083 6.167,6.396 0.5,0.313 10 false 21 5.583,5.385 6.219,5.688 0.635,0.302 10 false A168 5.99,5.823 6.625,6.125 0.635,0.302 10 false DGND 5.99,4.969 6.625,5.271 0.635,0.302 10 false GND1 5.688,5.198 6.24,5.49 0.552,0.292 10 false 2 2.063,7.563 2.521,7.76 0.458,0.198 10 false A47 4.417,0.885 4.573,1.083 0.156,0.198 10 false 1


Production Date from 2023/04


A539439E02
1.656,3.146 2.333,3.5 0.677,0.354 10 false ST 0.344,3.417 1.573,3.615 1.229,0.198 10 false BATT-MAIN 2.073,7.75 2.781,8.042 0.708,0.292 10 false ECM 0.458,6.271 1.688,6.469 1.229,0.198 10 false Auxiliary Battery 0.688,8.438 2.885,8.667 2.198,0.229 10 false : CAN Communication Line 2.635,5.313 3.865,5.51 1.229,0.198 10 false ST 0.667,5.021 1.896,5.219 1.229,0.198 10 false Starter Assembly 5.625,6.74 6.854,6.938 1.229,0.198 10 false I230 5.625,7.156 6.854,7.354 1.229,0.198 10 false I230 5.927,7.594 6.969,8.26 1.042,0.667 10 false Engine Stop and Start ECU 4.458,0.542 5.688,0.74 1.229,0.198 10 false BBC NO. 1 4.458,1.125 5.688,1.323 1.229,0.198 10 false BBC NO. 2 5.99,0.365 6.625,0.667 0.635,0.302 10 false BIN1 5.99,0.979 6.625,1.281 0.635,0.302 10 false BIN2 5.99,5.74 6.625,6.042 0.635,0.302 10 false DGND 6,6.292 6.635,6.594 0.635,0.302 10 false STA 5.594,5.292 6.229,5.594 0.635,0.302 10 false A168 5.583,0.375 6.219,0.677 0.635,0.302 10 false A168 5.583,0.969 6.219,1.271 0.635,0.302 10 false A168 5.583,6.302 6.219,6.604 0.635,0.302 10 false A169 2.281,1.594 3.51,1.792 1.229,0.198 10 false STAR 2.385,1.969 3.615,2.167 1.229,0.198 10 false STA 2.781,1.448 4.01,1.646 1.229,0.198 10 false 10 0.479,4.26 1.042,4.5 0.563,0.24 10 false C111 0.885,4.26 1.25,4.427 0.365,0.167 10 false B 1.594,4.615 2.01,4.844 0.417,0.229 10 false C132 0.594,4.073 1.073,4.302 0.479,0.229 10 false 1 2.365,6.323 3.594,6.521 1.229,0.198 10 false STA 2.271,6.771 3.5,6.969 1.229,0.198 10 false CANH 2.292,7.177 3.521,7.375 1.229,0.198 10 false CANL 5.99,7.167 6.719,7.49 0.729,0.323 10 false CANL 5.99,6.719 6.521,7 0.531,0.281 10 false CANH 5.698,0.188 6.198,0.5 0.5,0.313 10 false 3 5.688,0.802 6.188,1.115 0.5,0.313 10 false 1 5.698,5.104 6.208,5.417 0.51,0.313 10 false 2 5.688,6.125 6.188,6.438 0.5,0.313 10 false 21 5.667,6.573 6.167,6.885 0.5,0.313 10 false 13 5.667,6.99 6.167,7.302 0.5,0.313 10 false 14 2.313,4.51 3.542,4.708 1.229,0.198 10 false 3 3.031,4.844 4.26,5.042 1.229,0.198 10 false 2 3.031,4.51 4.26,4.708 1.229,0.198 10 false 5 2.313,4.844 3.542,5.042 1.229,0.198 10 false 1 2.792,7.021 3.292,7.333 0.5,0.313 10 false 3 2.76,6.219 3.26,6.531 0.5,0.313 10 false 18 2.792,6.583 3.292,6.896 0.5,0.313 10 false 4 4.854,0.26 5.354,0.573 0.5,0.313 10 false 2 4.542,0.25 5.042,0.563 0.5,0.313 10 false 1 4.865,0.844 5.365,1.156 0.5,0.313 10 false 2 4.542,0.844 5.042,1.156 0.5,0.313 10 false 1 0.083,0.052 2.635,0.292 2.552,0.24 12 false w/ Smart Entry and Start System: 0.427,2.406 3.354,2.635 2.927,0.229 10 false Certification ECU (Smart Key ECU Assembly) 1.313,4.604 2.542,4.802 1.229,0.198 10 false ST 5.99,5.302 6.625,5.604 0.635,0.302 10 false GND2 5.99,4.865 6.625,5.167 0.635,0.302 10 false GND1 5.594,5.74 6.229,6.042 0.635,0.302 10 false A169 5.583,4.865 6.219,5.167 0.635,0.302 10 false A168 5.698,5.552 6.208,5.865 0.51,0.313 10 false 6 5.688,4.656 6.198,4.969 0.51,0.313 10 false 8 1.708,4.417 2.042,4.656 0.333,0.24 10 false 2 0.427,2.229 1.042,2.427 0.615,0.198 10 false I223 2.052,7.573 2.51,7.771 0.458,0.198 10 false A182 2.792,1.854 4.021,2.052 1.229,0.198 10 false 3 2.26,5.906 2.875,6.104 0.615,0.198 10 false PPOS 2.76,5.802 3.073,6 0.313,0.198 10 false 81

A539440E01
1.542,3.146 2.281,3.417 0.74,0.271 10 false ST 0.354,3.49 1.583,3.688 1.229,0.198 10 false BATT-MAIN 2.073,7.885 2.76,8.115 0.688,0.229 10 false ECM 0.469,6.469 1.698,6.667 1.229,0.198 10 false Auxiliary Battery 0.688,8.448 2.885,8.677 2.198,0.229 10 false : CAN Communication Line 2.615,4.875 3.021,5.177 0.406,0.302 10 false ST 0.656,4.917 1.885,5.115 1.229,0.198 10 false Starter Assembly 5.583,6.594 6.813,6.792 1.229,0.198 10 false A169 5.625,7.031 6.854,7.229 1.229,0.198 10 false I230 5.927,7.917 6.99,8.667 1.063,0.75 10 false Engine Stop and Start ECU 4.458,0.542 5.688,0.74 1.229,0.198 10 false BBC NO. 1 4.458,1.125 5.688,1.323 1.229,0.198 10 false BBC NO. 2 5.99,0.375 6.625,0.677 0.635,0.302 10 false BIN1 5.99,0.979 6.625,1.281 0.635,0.302 10 false BIN2 5.99,5.615 6.625,5.917 0.635,0.302 10 false GND2 6,6.594 6.635,6.896 0.635,0.302 10 false STA 5.583,5.188 6.219,5.49 0.635,0.302 10 false A168 5.583,0.385 6.219,0.688 0.635,0.302 10 false A168 5.594,0.979 6.229,1.281 0.635,0.302 10 false A168 5.604,6.063 6.24,6.365 0.635,0.302 10 false A169 2.229,1.969 3.458,2.167 1.229,0.198 10 false I12 2.229,2.146 3.333,2.729 1.104,0.583 10 false Ignition or Starter Switch Assembly 2.271,1.49 2.813,1.719 0.542,0.229 10 false AM1 3.021,1.479 3.479,1.729 0.458,0.25 10 false ST1 2.104,1.479 2.51,1.771 0.406,0.292 10 false 7 3.333,1.479 3.813,1.677 0.479,0.198 10 false 5 0.438,4.625 1.01,4.958 0.573,0.333 10 false C111 0.844,4.615 1.177,4.823 0.333,0.208 10 false B 1.563,4.198 2.188,4.438 0.625,0.24 10 false C132 0.542,4.417 1,4.688 0.458,0.271 10 false 1 2.375,6.615 3.604,6.813 1.229,0.198 10 false STA 2.281,7.052 3.51,7.25 1.229,0.198 10 false CANH 2.292,7.51 3.521,7.708 1.229,0.198 10 false CANL 5.99,7.479 6.719,7.802 0.729,0.323 10 false CANL 5.99,7.042 6.521,7.323 0.531,0.281 10 false CANH 5.698,0.188 6.198,0.5 0.5,0.313 10 false 3 5.688,0.802 6.188,1.115 0.5,0.313 10 false 1 5.688,5 6.198,5.313 0.51,0.313 10 false 8 5.698,5.885 6.198,6.198 0.5,0.313 10 false 6 5.656,6.844 6.156,7.156 0.5,0.313 10 false 13 5.656,7.281 6.156,7.594 0.5,0.313 10 false 14 2.313,4.104 3.542,4.302 1.229,0.198 10 false 3 2.313,4.448 3.542,4.646 1.229,0.198 10 false 1 3.031,4.094 4.26,4.292 1.229,0.198 10 false 5 3.031,4.458 4.26,4.656 1.229,0.198 10 false 2 2.833,6.427 3.333,6.74 0.5,0.313 10 false 18 2.875,6.854 3.375,7.167 0.5,0.313 10 false 4 4.906,0.281 5.406,0.594 0.5,0.313 10 false 2 4.479,0.281 4.979,0.594 0.5,0.313 10 false 1 4.917,0.885 5.417,1.198 0.5,0.313 10 false 2 4.49,0.885 4.99,1.198 0.5,0.313 10 false 1 1.51,1.76 2.125,2.031 0.615,0.271 10 false AM2 0.354,1.76 1.583,1.958 1.229,0.198 10 false INP STD NO. 3 4.104,2.26 4.604,2.51 0.5,0.25 10 false N/ST 0.083,0.063 2.771,0.323 2.688,0.26 12 false w/o Smart Entry and Start System: 1.688,4 2.063,4.208 0.375,0.208 10 false 2 1.292,4.198 1.927,4.417 0.635,0.219 10 false ST 2.875,7.281 3.375,7.594 0.5,0.313 10 false 3 5.625,7.479 6.854,7.677 1.229,0.198 10 false I230 5.656,6.396 6.156,6.708 0.5,0.313 10 false 21 5.583,5.615 6.219,5.917 0.635,0.302 10 false A168 5.99,6.063 6.625,6.365 0.635,0.302 10 false DGND 5.99,5.198 6.625,5.5 0.635,0.302 10 false GND1 5.688,5.427 6.917,5.625 1.229,0.198 10 false 2 2.771,7.49 3.229,7.688 0.458,0.198 10 false A182 3.854,1.49 4.01,1.688 0.156,0.198 10 false 5 4.552,1.49 4.708,1.688 0.156,0.198 10 false 3 3.854,1.844 4.01,2.042 0.156,0.198 10 false 2 4.552,1.854 4.708,2.052 0.156,0.198 10 false 1 2.313,5.833 2.927,6.031 0.615,0.198 10 false NSR+ 2.323,6.219 2.781,6.417 0.458,0.198 10 false NSR- 2.823,5.635 3.135,5.833 0.313,0.198 10 false 32 2.833,6.042 3.146,6.24 0.313,0.198 10 false 33 2.76,7.052 3.375,7.25 0.615,0.198 10 false A182 2.76,6.604 3.375,6.802 0.615,0.198 10 false A182 2.76,6.219 3.375,6.417 0.615,0.198 10 false C137 2.76,5.833 3.375,6.031 0.615,0.198 10 false C137


CAUTION / NOTICE / HINT

NOTICE:
·

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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

Inspect the fuses for circuits related to this system before performing the following procedure.



HINT:
·

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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>FREEZE FRAME DATA

·

For wire harness and connector inspection procedures and precautions, refer to "General>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>ELECTRONIC CIRCUIT INSPECTION PROCEDURE"

·

DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.



PROCEDURE

1.CHECK VEHICLE SPECIFICATIONS
a.

Confirm the specifications of the vehicle.

Result:
Result Proceed to
Production Date from 2022/01 to 2023/04 A
Production Date from 2023/04 B




A

2.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BBC NO. 1 FUSE AND BBC NO. 2 FUSE)

B

6.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BBC NO. 1 FUSE AND BBC NO. 2 FUSE)
2.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BBC NO. 1 FUSE AND BBC NO. 2 FUSE)
a.

Disconnect the A168 engine stop and start ECU connector.


b.

Remove the BBC NO. 1 fuse and BBC NO. 2 fuse from the No. 1 engine room relay block.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A168-1 (BIN2) - 2 (BBC NO. 2 fuse) Always Below 1 Ω
A168-3 (BIN1) - 2 (BBC NO. 1 fuse) Always Below 1 Ω
A168-1 (BIN2) - Body ground and other terminals Always 10 kΩ or higher
A168-3 (BIN1) - Body ground and other terminals Always 10 kΩ or higher
2 (BBC NO. 2 fuse) - Body ground and other terminals Always 10 kΩ or higher
2 (BBC NO. 1 fuse) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST RELAY)
a.

Disconnect the I223 certification ECU (smart key ECU assembly) connector.*1

*1: w/ Smart Entry and Start System



b.

Disconnect the C62 park/neutral position switch assembly connector.


c.

Disconnect the A47 ECM connector.


d.

Disconnect the A168 and A169 engine stop and start ECU connectors.


e.

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


f.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A169-21 (STA) - ST relay terminal 2 Always Below 1 Ω
A169-21 (STA) - Body ground and other terminals Always 10 kΩ or higher
ST relay terminal 2 - Body ground and other terminals Always 10 kΩ or higher
A168-1 (BIN2) - A169-21 (STA) Always 10 kΩ or higher
A168-3 (BIN1) - A169-21 (STA) Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK ENGINE STOP AND START ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK ENGINE STOP AND START ECU
a.

Disconnect the engine stop and start ECU connector.

A397704C98
3.188,0.083 3.635,0.323 0.448,0.24 3.417,1.458 3.344,0.813 true 3.938,1.458 3.688,0.708 true 0.073,0.083 0.385,0.281 0.313,0.198 10 false *a 3.25,0.125 3.688,0.313 0.438,0.188 10 false A169 3.302,1.5 3.833,1.698 0.531,0.198 10 false STA 3.802,1.51 4.333,1.708 0.531,0.198 10 false DGND
*a Component without harness connected
(Engine Stop and Start ECU) 		- -



b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A169-21 (STA) - A169-6 (DGND) Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.INSPECT RELAY (ST RELAY)

NG

REPLACE ENGINE STOP AND START ECU

Click hereEngine / Hybrid System>STOP AND START>ENGINE STOP AND START ECU>REMOVAL


6.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BBC NO. 1 FUSE AND BBC NO. 2 FUSE)
a.

Disconnect the A168 engine stop and start ECU connector.


b.

Remove the BBC NO. 1 fuse and BBC NO. 2 fuse from the No. 1 engine room relay block.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A168-1 (BIN2) - 2 (BBC NO. 2 fuse) Always Below 1 Ω
A168-3 (BIN1) - 2 (BBC NO. 1 fuse) Always Below 1 Ω
A168-1 (BIN2) - Body ground and other terminals Always 10 kΩ or higher
A168-3 (BIN1) - Body ground and other terminals Always 10 kΩ or higher
2 (BBC NO. 2 fuse) - Body ground and other terminals Always 10 kΩ or higher
2 (BBC NO. 1 fuse) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST RELAY)
a.

Disconnect the I223 certification ECU (smart key ECU assembly) connector.*1

*1: w/ Smart Entry and Start System



b.

Disconnect the A182 ECM connector.


c.

Disconnect the A168 and A169 engine stop and start ECU connectors.


d.

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


e.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A169-21 (STA) - ST relay terminal 2 Always Below 1 Ω
A169-21 (STA) - Body ground and other terminals Always 10 kΩ or higher
ST relay terminal 2 - Body ground and other terminals Always 10 kΩ or higher
A168-1 (BIN2) - A169-21 (STA) Always 10 kΩ or higher
A168-3 (BIN1) - A169-21 (STA) Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

8.CHECK ENGINE STOP AND START ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK ENGINE STOP AND START ECU
a.

Disconnect the engine stop and start ECU connector.

A397704C98
3.188,0.083 3.635,0.323 0.448,0.24 3.417,1.458 3.344,0.813 true 3.938,1.458 3.688,0.708 true 0.073,0.083 0.385,0.281 0.313,0.198 10 false *a 3.25,0.125 3.688,0.313 0.438,0.188 10 false A169 3.302,1.5 3.833,1.698 0.531,0.198 10 false STA 3.802,1.51 4.333,1.708 0.531,0.198 10 false DGND
*a Component without harness connected
(Engine Stop and Start ECU) 		- -



b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A169-21 (STA) - A169-6 (DGND) Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

9.INSPECT RELAY (ST RELAY)

NG

REPLACE ENGINE STOP AND START ECU

Click hereEngine / Hybrid System>STOP AND START>ENGINE STOP AND START ECU>REMOVAL