RM35X0E _58 Vehicle Interior _078378 THEFT DETERRENT / KEYLESS ENTRY _0397001 ENTRY AND START SYSTEM(for Start Function) J

THEFT DETERRENT / KEYLESS ENTRY  ENTRY AND START SYSTEM(for Start Function)  Power Source Mode does not Change to ON (IG)  


DESCRIPTION

If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.

Related Data List and Active Test Items
Problem Symptom Data List and Active Test
Power source mode does not change to on (IG) but does change to on (ACC)
Power Source Control
·

Power Supply Condition

·

IG Relay Monitor (Inside)

·

IG Relay Monitor (Outside)



WIRING DIAGRAM

E421452E02
5.781,2.396 6.396,2.594 0.615,0.198 10 false IG1D 2.802,0.698 3.958,1.406 1.156,0.708 10 false from Battery 2.677,2.719 4.167,3.167 1.49,0.448 10 false IG1 NO.1 Relay 2.656,3.979 4.24,4.396 1.583,0.417 10 false IG1 NO.2 Relay 2.625,5.198 4.208,5.75 1.583,0.552 10 false IG2 NO.2 Relay 1.25,2.208 2.167,2.406 0.917,0.198 10 false ECU-IG1 NO.2 1.406,4.76 2.323,4.958 0.917,0.198 10 false A/BAG-IG2 5.333,3.396 7.156,4.313 1.823,0.917 10 false Certification ECU (Smart Key ECU Assembly) 1.021,5.625 4.479,5.99 3.458,0.365 10 false Instrument Panel Junction Block Assembly 4.406,2.365 5.021,2.563 0.615,0.198 10 false 3A 4.427,2.188 5.042,2.385 0.615,0.198 10 false 17 4.396,1.698 5.01,1.896 0.615,0.198 10 false 3E 4.427,1.49 5.042,1.688 0.615,0.198 10 false 1 0.74,2.021 1.354,2.219 0.615,0.198 10 false 3A 0.771,1.823 1.385,2.021 0.615,0.198 10 false 55 0.74,2.396 1.354,2.594 0.615,0.198 10 false 3B 0.802,2.219 1.417,2.417 0.615,0.198 10 false 3 0.74,3.292 1.354,3.49 0.615,0.198 10 false 3A 0.729,3.094 1.344,3.292 0.615,0.198 10 false 11 0.729,4.552 1.344,4.75 0.615,0.198 10 false 3A 0.76,4.375 1.375,4.573 0.615,0.198 10 false 47 4.427,4.542 5.042,4.74 0.615,0.198 10 false 3F 4.448,4.323 5.063,4.521 0.615,0.198 10 false 1 5.521,2.229 6.135,2.427 0.615,0.198 10 false 17 5.365,3.25 5.979,3.448 0.615,0.198 10 false N156 4.74,6.063 7.063,6.583 2.323,0.521 10 false *1: for LHD 4.76,6.323 7.083,6.844 2.323,0.521 10 false *2: for RHD 4.781,1.5 5.396,1.698 0.615,0.198 10 false 1 4.719,1.708 5.333,1.906 0.615,0.198 10 false 3G 4.406,1.906 5.021,2.104 0.615,0.198 10 false *1 4.719,1.917 5.333,2.115 0.615,0.198 10 false *2 1.385,3.479 2.302,3.677 0.917,0.198 10 false ECU-IG1 NO.4

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.

·

If the entry and start system (for Start Function) has been canceled, enable the system before performing troubleshooting.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Entry Function)>CUSTOMIZE PARAMETERS

·

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

·

Before replacing the certification ECU (smart key ECU assembly), refer to the Service Bulletin.

·

After completing repairs, confirm that the problem does not recur.

·

After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".



PROCEDURE

1.CHECK FOR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Entry&Start, Power Source Control / Trouble Codes.


e.

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes
50001 125
Body Electrical > Power Source Control > Trouble Codes
50001 223

Result:
Result Proceed to
DTCs are not output A
Entry and start system (for Start Function) DTCs are output B



A

2.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Start Function)>DIAGNOSTIC TROUBLE CODE CHART


2.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.
B498244C53
1.604,0.115 1.969,0.354 0.365,0.24 0.979,1.979 1.177,1.979 1.177,1.979 1.177,0.958 false 1.635,0.156 1.979,0.354 0.344,0.198 10 false N156 0.635,1.906 1.229,2.104 0.594,0.198 10 false IG1D 0.135,0.094 0.448,0.292 0.313,0.198 10 false *a
*a Component with harness connected
(Certification ECU (Smart Key ECU Assembly))


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N156-17 (IG1D) - Body ground Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 9 V or higher



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY), POWER SUPPLY AND BODY GROUND)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY), POWER SUPPLY AND BODY GROUND)
a.

Disconnect the N156 certification ECU (smart key ECU assembly) connector.


b.

for LHD:

Disconnect the 3E, 3F and 3B instrument panel junction block assembly connectors.


c.

for RHD:

Disconnect the 3G, 3F and 3B instrument panel junction block assembly connectors.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N156-17 (IG1D) - 3A-17 Always Below 1 Ω
3B-3 - Body ground Always Below 1 Ω
N156-17 (IG1D) or 3A-17 - Other terminals and body ground Always 10 kΩ or higher



e.

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

Standard Voltage:
for LHD:
Tester Connection Condition Specified Condition
3E-1 - Body ground Always 11 to 14 V
3F-1 - Body ground Always 11 to 14 V

for RHD:
Tester Connection Condition Specified Condition
3G-1 - Body ground Always 11 to 14 V
3F-1 - Body ground Always 11 to 14 V



f.

Reconnect the N156 certification ECU (smart key ECU assembly) connector.


Result:
Proceed to
OK
NG



OK

4.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
C412263C07
1.771,0.302 2.177,0.542 0.406,0.24 5.615,0.333 6.021,0.573 0.406,0.24 1.167,1.802 1.573,2.042 0.406,0.24 3.573,1.625 3.979,1.865 0.406,0.24 3.573,1.938 3.979,2.177 0.406,0.24 5.74,1.792 6.146,2.031 0.406,0.24 1.875,0.333 2.188,0.531 0.313,0.198 10 false 3A 5.729,0.365 6.042,0.563 0.313,0.198 10 false 3B 1.292,1.833 1.604,2.031 0.313,0.198 10 false 3C 4.063,1.677 4.375,1.875 0.313,0.198 10 false *A 3.698,1.969 4.01,2.167 0.313,0.198 10 false 3G 5.885,1.844 6.198,2.042 0.313,0.198 10 false 3F 3.688,1.667 4,1.865 0.313,0.198 10 false 3E 4.073,1.969 4.385,2.167 0.313,0.198 10 false *B 0.24,0.26 0.552,0.458 0.313,0.198 10 false *a
*A for LHD *B for RHD
*a Component without harness connected
(Instrument Panel Junction Block Assembly) 		- -


a.

Remove the instrument panel junction block assembly.

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


b.

Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3A-17 - 3C-12 Always Below 1 Ω



d.

Connect a positive (+) lead from the battery to terminal 3A-17.


e.

Connect a negative (-) lead from the battery to terminal 3B-3.


f.

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

Standard Resistance:
for LHD:
Tester Connection Condition Specified Condition
3E-1 - 3A-55 Always Below 1 Ω
3E-1 - 3A-11 Always Below 1 Ω
3F-1 - 3A-47 Always Below 1 Ω

for RHD:
Tester Connection Condition Specified Condition
3G-1 - 3A-55 Always Below 1 Ω
3G-1 - 3A-11 Always Below 1 Ω
3F-1 - 3A-47 Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

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


NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL