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

STOP AND START  STOP AND START SYSTEM  Stop and Start Priority Control System  


DESCRIPTION

In stop and start control status, there is normal status (Standard) and stop and start priority status (Extended).

Stop and start control status can be switched to the desired mode by pressing and holding the stop and start system cancel switch (combination switch assembly), or by operating the steering pad switch assembly, and the mode change is also shown on the multi-information display screen.

When the mode has been switched by pressing and holding the stop and start system cancel switch (combination switch assembly), a signal is sent directly from the stop and start system cancel switch (combination switch assembly) to the engine stop and start ECU.

When the steering pad switch assembly is used to select a control mode, a status change request signal is sent from the combination meter assembly to the engine stop and start ECU via CAN communication.

Cooperative control is performed by the air conditioning amplifier assembly and engine stop and start ECU based on the selected control mode.

When stop and start priority control (Extended) is selected, the operation time of stop and start control will be extended in order to improve fuel economy.

WIRING DIAGRAM

A504044E01
3.229,0.813 3.469,1.01 0.24,0.198 10 false 32 3.229,1.198 3.469,1.396 0.24,0.198 10 false 15 3.5,0.927 4.167,1.135 0.667,0.208 10 false MSM+ 3.5,1.313 4.167,1.521 0.667,0.208 10 false MSTI 3.438,1.667 4.104,1.875 0.667,0.208 10 false I4 3.427,1.844 4.604,2.25 1.177,0.406 10 false Combination Meter Assembly 5.417,1.792 6.969,2.281 1.552,0.49 10 false Air Conditioning Amplifier Assembly 5.125,3.271 7.021,3.521 1.896,0.25 10 false Engine Stop and Start ECU 5.135,3.104 5.802,3.313 0.667,0.208 10 false I230 2.76,1.594 3.427,1.802 0.667,0.208 10 false 4 2.729,1.198 3.396,1.406 0.667,0.208 10 false 10 2.729,0.813 3.396,1.021 0.667,0.208 10 false 11 2.375,0.813 3.042,1.021 0.667,0.208 10 false +DP 2.292,1.188 2.958,1.396 0.667,0.208 10 false +DP2 2.344,1.583 3.01,1.792 0.667,0.208 10 false EAU 1.552,1.24 2.219,1.448 0.667,0.208 10 false 5 1.542,1.625 2.208,1.833 0.667,0.208 10 false 10 1.563,0.844 2.229,1.052 0.667,0.208 10 false 4 0.146,2.104 0.813,2.313 0.667,0.208 10 false z3 1.573,2.094 2.24,2.302 0.667,0.208 10 false I82 0.125,2.281 1.385,2.729 1.26,0.448 10 false Steering Pad Switch Assembly 6.219,2.698 6.885,2.906 0.667,0.208 10 false ECAN 6.719,2.563 6.917,2.771 0.198,0.208 10 false 5 4.802,4.813 7.125,5.281 2.323,0.469 10 false Stop and Start System Cancel Switch (Combination Switch Assembly) 4.823,4.646 5.49,4.854 0.667,0.208 10 false I61 5.604,4.115 5.802,4.323 0.198,0.208 10 false E 6.24,4.125 6.698,4.365 0.458,0.24 10 false ECU 5.375,4.115 5.99,4.333 0.615,0.219 10 false 5 6.635,4.125 7.156,4.344 0.521,0.219 10 false 8 0.5,5.375 2.531,5.625 2.031,0.25 10 false : CAN Communication Line 1.594,3.208 2.26,3.417 0.667,0.208 10 false I253 0.156,3.594 2.594,3.969 2.438,0.375 10 false Radio and Display Receiver Assembly 1.552,2.271 3.479,2.635 1.927,0.365 10 false Spiral Cable Sub-assembly 1.042,3.208 1.708,3.417 0.667,0.208 10 false SWG 2.115,2.979 2.781,3.188 0.667,0.208 10 false 23 4.156,0.969 4.823,1.177 0.667,0.208 10 false CANH 5.604,0.958 6.271,1.167 0.667,0.208 10 false CANH 5.604,2.51 6.271,2.719 0.667,0.208 10 false CANH 5.604,2.865 6.271,3.073 0.667,0.208 10 false CANL 4.167,1.344 4.833,1.552 0.667,0.208 10 false CANL 5.604,1.333 6.271,1.542 0.667,0.208 10 false CANL 5.406,1.646 6.073,1.854 0.667,0.208 10 false I49 2.063,3.208 2.729,3.417 0.667,0.208 10 false I258 1.625,2.979 2.292,3.188 0.667,0.208 10 false 20 1.615,3.417 2.281,3.625 0.667,0.208 10 false *1 2.115,3.417 2.781,3.625 0.667,0.208 10 false *2 2.292,5.375 4.729,5.75 2.438,0.375 10 false *1: w/ Navigation System 3.969,5.365 6.406,5.74 2.438,0.375 10 false *2: w/o Navigation System

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



HINT:
·

When stop and start priority control (Extended) is selected, the operation of the air conditioning system is limited. If the customer reports that the cooling effectiveness of the air conditioning system is poor, check the selected control mode. If stop and start priority control (Extended) is selected, cancel the control mode and check if the cooling effectiveness of the air conditioning system improves. If it improves, explain to the customer that the operation of the air conditioning system was limited by stop and start control.

·

Depending on the vehicle conditions, the stop and start operation time may not change even if stop and start priority control (Extended) is selected.

·

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



PROCEDURE

1.CHECK PROBLEM SYMPTOMS
HINT:
·

Check each symptom by checking the suspected areas in the table below.

·

By using the GTS and entering the following menus, the selected mode can be confirmed.

Powertrain / Stop and Start / Data List / Stop & Start A/C Mode



Result:
Problem Symptoms Trouble Area Proceed to
Multi-information display screen does not change after pressing steering pad switch assembly
·

Steering pad switch assembly

·

Spiral cable sub-assembly

·

Combination meter assembly

·

Engine stop and start ECU

·

Wire harness or connector (steering pad switch assembly - combination meter assembly)

·

Wire harness or connector (engine stop and start ECU - combination meter assembly)


A
Multi-information display screen changes without pressing steering pad switch assembly
·

Steering pad switch assembly

·

Spiral cable sub-assembly

·

Engine stop and start ECU

·

Wire harness or connector (steering pad switch assembly - combination meter assembly)


B
The status change interrupt display in the combination meter assembly is not displayed, but control changes Combination meter assembly C
The status change interrupt display in the combination meter assembly is displayed, but control does not change
·

Air conditioning amplifier assembly

·

Wire harness or connector (engine stop and start ECU - combination meter assembly)


D
Control mode returns to default mode after turning ignition switch to ON Engine stop and start ECU E



A

2.CHECK OPERATION

B

4.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)

C

GO TO METER / GAUGE SYSTEM

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


D

8.CHECK DTC OUTPUT

E

9.CHECK DTC OUTPUT
2.CHECK OPERATION
a.

Using the steering pad switch assembly, check that all functions other than "Stop & Start Settings" can be selected.

Result:
Result Proceed to
Only "Stop & Start Settings" cannot be selected A
No function can be selected using the steering pad switch assembly (w/ Navigation System) B
No function can be selected using the steering pad switch assembly (w/o Navigation System) C




A

3.CHECK DTC OUTPUT

B

4.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)

C

7.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)
3.CHECK DTC OUTPUT
a.

Perform a road test.


b.

Using the GTS, read the DTCs.

Powertrain > Stop and Start > Trouble Codes
50001 392

Result:
Result Proceed to
DTCs are not output A
CAN DTCs are output B



A

REPLACE ENGINE STOP AND START ECU

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


B

GO TO CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING


4.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)
a.

Disconnect the I82 spiral cable sub-assembly connector.


b.

Disconnect the I4 combination meter assembly connector.


c.

Disconnect the I253 radio and display receiver assembly connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I82-11 (+DP) - I4-32 (MSM+) Always Below 1 Ω
I82-10 (+DP2) - I4-15 (MSTI) Always Below 1 Ω
I82-4 (EAU) - I253-20 (SWG) Always Below 1 Ω
I82-11 (+DP) - Body ground and other terminals Always 10 kΩ or higher
I4-32 (MSM+) - Body ground and other terminals Always 10 kΩ or higher
I82-10 (+DP2) - Body ground and other terminals Always 10 kΩ or higher
I4-15 (MSTI) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.INSPECT SPIRAL CABLE SUB-ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.INSPECT SPIRAL CABLE SUB-ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>SPIRAL CABLE>INSPECTION

Result:
Proceed to
OK
NG



OK

6.INSPECT STEERING PAD SWITCH ASSEMBLY

NG

REPLACE SPIRAL CABLE SUB-ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>SPIRAL CABLE>REMOVAL


7.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)
a.

Disconnect the I82 spiral cable sub-assembly connector.


b.

Disconnect the I4 combination meter assembly connector.


c.

Disconnect the I258 radio and display receiver assembly connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I82-11 (+DP) - I4-32 (MSM+) Always Below 1 Ω
I82-10 (+DP2) - I4-15 (MSTI) Always Below 1 Ω
I82-4 (EAU) - I258-23 (SWG) Always Below 1 Ω
I82-11 (+DP) - Body ground and other terminals Always 10 kΩ or higher
I4-32 (MSM+) - Body ground and other terminals Always 10 kΩ or higher
I82-10 (+DP2) - Body ground and other terminals Always 10 kΩ or higher
I4-15 (MSTI) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.INSPECT SPIRAL CABLE SUB-ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK DTC OUTPUT
a.

Perform a road test.


b.

Using the GTS, read the DTCs.

Powertrain > Stop and Start > Trouble Codes
50001 392
Result:
Result Proceed to
DTCs are not output A
CAN DTCs are output B




A

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL


B

GO TO CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING


9.CHECK DTC OUTPUT
a.

Perform a road test.


b.

Using the GTS, read the DTCs.

Powertrain > Stop and Start > Trouble Codes
50001 392
Result:
Result Proceed to
DTCs are not output A
DTCs are output B




A

REPLACE ENGINE STOP AND START ECU

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


B

GO TO DIAGNOSTIC TROUBLE CODE CHART