RM35X0E _51 Engine / Hybrid System _078825 STOP AND START _0382334 STOP AND START SYSTEM C

STOP AND START  STOP AND START SYSTEM  P161D9E  Starter Delay Circuit Stuck On  


DESCRIPTION

By using the starter delay circuit, the engine stop and start ECU can activate the STARTER NO.2 relay (for starter motor operation) after activating the STARTER relay (for starter pinion operation) to operate the starter assembly.

By monitoring the condition of the STARTER relay (for starter pinion operation) and STARTER NO.2 relay (for starter motor operation), the engine stop and start ECU detects if the transistor of the starter delay circuit is stuck. If the transistor of the starter delay circuit is stuck on, the engine stop and start ECU blinks the stop and start cancel indicator and stores DTC P161D9E. If the transistor of the starter delay circuit is stuck on, the STARTER relay (for starter pinion operation) and STARTER NO.2 relay (for starter motor operation) will be activated simultaneously.

w/ Entry and Start System and for Automatic Transmission:
A447854E01
2.594,0.49 3.833,0.729 1.24,0.24 10 false BBC-1 4.927,0.458 5.542,0.656 0.615,0.198 10 false BIN1 4.938,0.844 5.552,1.042 0.615,0.198 10 false BIN2 3.156,1.844 4.479,2.344 1.323,0.5 10 false Park/Neutral Position Switch Assembly 1.688,1.333 2.302,1.542 0.615,0.208 10 false STAR 2.594,0.875 3.365,1.063 0.771,0.188 10 false BBC-2 4.958,2.417 5.417,2.615 0.458,0.198 10 false STA 4.958,3.323 5.573,3.521 0.615,0.198 10 false STA2 3.688,2.958 4.531,3.156 0.844,0.198 10 false STARTER 5.021,3.844 6.833,4.073 1.813,0.229 10 false Engine Stop and Start ECU 0.896,2.698 2.125,2.896 1.229,0.198 10 false ST NO.2 2.188,4.688 3.417,4.885 1.229,0.198 10 false STARTER NO.2 0.896,3.615 2.125,3.813 1.229,0.198 10 false ST NO.1 0.625,7.219 1.698,7.417 1.073,0.198 10 false Battery 4.875,8.313 6.167,8.51 1.292,0.198 10 false Starter Assembly 4.021,4.281 4.271,4.479 0.25,0.198 10 false ST 4.031,4.875 4.188,5.073 0.156,0.198 10 false B 5.271,5.438 5.427,5.635 0.156,0.198 10 false L 5.26,5.844 5.417,6.042 0.156,0.198 10 false B 5.313,6.073 5.469,6.271 0.156,0.198 10 false M 4.031,6.396 4.49,6.594 0.458,0.198 10 false SL2 4.031,7.365 4.49,7.563 0.458,0.198 10 false SL1 3.427,1.115 3.583,1.313 0.156,0.198 10 false L 3.417,1.344 3.573,1.542 0.156,0.198 10 false B 3.656,1.604 3.813,1.802 0.156,0.198 10 false P 3.896,1.594 4.052,1.792 0.156,0.198 10 false N 0.521,5.75 1.531,6.344 1.01,0.594 10 false Fusible Link Block Assembly (Main Battery) 1.063,1.76 2.604,2.135 1.542,0.375 10 false Certification ECU (Smart Key ECU Assembly)

w/o Entry and Start System and for Automatic Transmission:
A444512E01
2.594,0.49 3.833,0.729 1.24,0.24 10 false BBC-1 4.927,0.458 5.542,0.656 0.615,0.198 10 false BIN1 4.938,0.844 5.552,1.042 0.615,0.198 10 false BIN2 3.156,1.844 4.479,2.344 1.323,0.5 10 false Park/Neutral Position Switch Assembly 1.448,1.708 2.552,2.167 1.104,0.458 10 false Ignition or Starter Switch Assembly 2.125,1.469 2.583,1.667 0.458,0.198 10 false ST2 1.521,1.469 1.979,1.667 0.458,0.198 10 false AM2 2.594,0.875 3.365,1.063 0.771,0.188 10 false BBC-2 4.958,2.417 5.417,2.615 0.458,0.198 10 false STA 4.958,3.323 5.573,3.521 0.615,0.198 10 false STA2 3.688,2.958 4.531,3.156 0.844,0.198 10 false STARTER 5.021,3.844 6.833,4.073 1.813,0.229 10 false Engine Stop and Start ECU 0.896,2.698 2.125,2.896 1.229,0.198 10 false ST NO.2 2.188,4.688 3.417,4.885 1.229,0.198 10 false STARTER NO.2 0.896,3.615 2.125,3.813 1.229,0.198 10 false ST NO.1 0.625,7.219 1.698,7.417 1.073,0.198 10 false Battery 4.875,8.313 6.167,8.51 1.292,0.198 10 false Starter Assembly 4.021,4.281 4.271,4.479 0.25,0.198 10 false ST 4.031,4.875 4.188,5.073 0.156,0.198 10 false B 5.271,5.438 5.427,5.635 0.156,0.198 10 false L 5.26,5.844 5.417,6.042 0.156,0.198 10 false B 5.313,6.073 5.469,6.271 0.156,0.198 10 false M 4.031,6.396 4.49,6.594 0.458,0.198 10 false SL2 4.031,7.365 4.49,7.563 0.458,0.198 10 false SL1 3.427,1.115 3.583,1.313 0.156,0.198 10 false L 3.417,1.344 3.573,1.542 0.156,0.198 10 false B 3.656,1.604 3.813,1.802 0.156,0.198 10 false P 3.896,1.594 4.052,1.792 0.156,0.198 10 false N 0.719,1.49 1.125,1.74 0.406,0.25 10 false AM2 0.521,5.75 1.531,6.344 1.01,0.594 10 false Fusible Link Block Assembly (Main Battery)

for Manual Transmission:
A444513E01
3.135,1.667 4.656,2.052 1.521,0.385 10 false Clutch Start Switch Assembly (for Lower) 1.385,1.729 2.542,2.156 1.156,0.427 10 false Ignition or Starter Switch Assembly 0.729,1.51 1.125,1.781 0.396,0.271 10 false AM2 2.594,0.479 3.417,0.677 0.823,0.198 10 false BBC-1 2.604,0.885 3.427,1.083 0.823,0.198 10 false BBC-2 4.948,0.844 5.771,1.042 0.823,0.198 10 false BIN2 0.844,2.708 1.667,2.906 0.823,0.198 10 false ST NO.2 0.885,3.615 1.708,3.813 0.823,0.198 10 false ST NO.1 2.188,4.677 3.354,4.906 1.167,0.229 10 false STARTER NO.2 0.531,5.667 1.417,6.406 0.885,0.74 10 false Fusible Link Block Assembly (Main Battery) 0.635,7.229 1.458,7.427 0.823,0.198 10 false Battery 4.833,8.333 6.031,8.583 1.198,0.25 10 false Starter Assembly 5.01,3.844 6.813,4.104 1.802,0.26 10 false Engine Stop and Start ECU 4.958,0.448 5.781,0.646 0.823,0.198 10 false BIN1 4.938,2.417 5.76,2.615 0.823,0.198 10 false STA 4.948,3.323 5.771,3.521 0.823,0.198 10 false STA2 4.01,4.281 4.833,4.479 0.823,0.198 10 false ST 4.021,4.875 4.844,5.073 0.823,0.198 10 false B 5.25,5.854 6.073,6.052 0.823,0.198 10 false B 5.333,6.083 6.156,6.281 0.823,0.198 10 false M 4.021,6.396 4.844,6.594 0.823,0.198 10 false SL2 4.021,7.365 4.844,7.563 0.823,0.198 10 false SL1 1.5,1.479 1.917,1.708 0.417,0.229 10 false AM2 2.125,1.479 2.542,1.708 0.417,0.229 10 false ST2 3.656,2.927 4.823,3.156 1.167,0.229 10 false STARTER 5.26,5.385 6.083,5.583 0.823,0.198 10 false L 3.906,1.438 4.729,1.635 0.823,0.198 10 false L 3.406,1.448 4.229,1.646 0.823,0.198 10 false B

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note
P161D9E Starter Delay Circuit Stuck On Both of the following conditions are met (1 trip detection logic):
·

Ignition switch ON.

·

Time between STARTER relay (for starter pinion) turning on and STARTER NO.2 relay (for starter motor) turning on becomes less than 0.016 seconds and 3 times or more.


Engine stop and start ECU Blinks DTC stored SAE Code: P161D

CONFIRMATION DRIVING PATTERN

CONFIRMATION AFTER TROUBLESHOOTING


HINT:
·

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 (51°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.



a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Stop and Start > Clear DTCs
50002 392

e.

Start the engine and warm it up.


f.

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

CAUTION:

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



g.

for Automatic Transmission:

Depress the brake pedal and stop the vehicle.

for Manual Transmission:

Stop the vehicle, move the shift lever to neutral and release the clutch pedal.


h.

Keep the engine stopped by stop and start control. (for Automatic Transmission: Keep the shift lever in D.)


i.

for Automatic Transmission:

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

for Manual Transmission:

Depress the clutch pedal and start the engine.


j.

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

CAUTION:

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



k.

for Automatic Transmission:

Depress the brake pedal and stop the vehicle.

for Manual Transmission:

Stop the vehicle, move the shift lever to neutral and release the clutch pedal.


l.

Keep the engine stopped by stop and start control. (for Automatic Transmission: Keep the shift lever in D.)


m.

for Automatic Transmission:

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

for Manual Transmission:

Depress the clutch pedal and start the engine.


n.

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

CAUTION:

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



o.

for Automatic Transmission:

Depress the brake pedal and stop the vehicle.

for Manual Transmission:

Stop the vehicle, move the shift lever to neutral and release the clutch pedal.


p.

Keep the engine stopped by stop and start control. (for Automatic Transmission: Keep the shift lever in D.)


q.

for Automatic Transmission:

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

for Manual Transmission:

Depress the clutch pedal and start the engine.


r.

Check that no DTCs are output.

Powertrain > Stop and Start > Trouble Codes
50001 392


STOP AND START SYSTEM OPERATION CHECK


HINT:
·

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 (51°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.



a.

Start the engine and warm it up.


b.

Turn the air conditioning system off.


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.

for Automatic Transmission:

Depress the brake pedal and stop the vehicle.

for Manual Transmission:

Stop the vehicle, move the shift lever to neutral and release the clutch pedal.


e.

Allow the engine to stop by stop and start control. (for Automatic Transmission: Keep the shift lever in D.)


f.

for Automatic Transmission:

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

for Manual Transmission:

Depress the clutch pedal and start the engine.



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 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

·

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

·

for Automatic Transmission:

When the engine stop and start ECU or electromagnetic oil pump is replaced, check the electromagnetic oil pump.

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



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

·

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.

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>DTC CHECK / CLEAR



PROCEDURE

1.CHECK ENGINE STOP AND START ECU (STA, STA2 SIGNAL)
a.

Connect an oscilloscope to the STA, STA2 and DGND terminals of the stop and start ECU connector.

A419453C73
3.24,0.5 3.688,0.771 0.448,0.271 4.198,2.219 3.76,1.229 true 3.479,2.24 3.427,1.344 true 2.781,2.229 3.26,1.333 true 3.354,2.281 4.135,2.479 0.781,0.198 10 false STA 4.042,2.281 4.698,2.469 0.656,0.188 10 false DGND 3.344,0.552 3.719,0.75 0.375,0.198 10 false N32 0.104,0.073 0.885,0.271 0.781,0.198 10 false *a 2.604,2.292 3.385,2.49 0.781,0.198 10 false STA2
*a Component with harness connected
(Engine Stop and Start ECU) 		- -



b.
A285702E47
0.042,0.677 0.5,0.875 0.458,0.198 10 false STA 0.042,1.281 0.5,1.479 0.458,0.198 10 false STA2 1.198,1.771 2.958,1.958 1.76,0.188 10 false 0.016 seconds or more 0.031,0.875 0.719,1.208 0.688,0.333 10 false (STARTER Relay) 0.031,1.5 0.906,1.885 0.875,0.385 10 false (STARTER NO.2 Relay)

Check the waveform immediately after turning the ignition switch START.

Item Condition
Tester Connection N32-21 (STA) - N32-6 (DGND)
N32-23 (STA2) - N32-6 (DGND)
Condition Engine started by ignition switch operation

Result:
Result Proceed to
Time between STARTER relay (for starter pinion) turning on and STARTER NO.2 relay (for starter motor) turning on becomes 0.016 seconds or more A
Time between STARTER relay (for starter pinion) turning on and STARTER NO.2 relay (for starter motor) turning on becomes less than 0.016 seconds B




A

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

REPLACE ENGINE STOP AND START ECU

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