RM38N0EC _58 Vehicle Interior _111832 THEFT DETERRENT / KEYLESS ENTRY _0509385 SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model) J

THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model)  Power Source Mode does not Change to ON (ACC)  


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 (ACC) but does change to on (IG)
Power Source Control
·

Power Supply Condition

·

ACC Relay Monitor



WIRING DIAGRAM

B586656E11
1.792,0.75 3.656,1.146 1.865,0.396 10 false from Auxiliary Battery 2.521,2.677 3.073,2.906 0.552,0.229 10 false ACC 1.5,2.031 2.313,2.26 0.813,0.229 10 false ECU-ACC 0.958,1.667 1.302,1.906 0.344,0.24 10 false 12 0.958,2.198 1.302,2.438 0.344,0.24 10 false 36 4,1.656 4.344,1.896 0.344,0.24 10 false 1 3.979,2.188 4.323,2.427 0.344,0.24 10 false 39 0.948,1.875 1.292,2.115 0.344,0.24 10 false 4B 0.948,2.406 1.292,2.646 0.344,0.24 10 false 4B 3.958,2.406 4.302,2.646 0.344,0.24 10 false 4B 3.969,1.875 4.313,2.115 0.344,0.24 10 false 4F 5.135,3.635 5.479,3.875 0.344,0.24 10 false E52 5.125,3.792 6.698,4.5 1.573,0.708 10 false Certification ECU (Smart Key ECU Assembly) 4.99,2.313 5.333,2.552 0.344,0.24 10 false 21 5.24,2.313 5.792,2.542 0.552,0.229 10 false ACCD 5.781,1.896 6.125,2.135 0.344,0.24 10 false +B 6.229,2.271 6.573,2.51 0.344,0.24 10 false IC 1.51,3.375 4.74,3.896 3.229,0.521 10 false Power Distribution Box Assembly

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the ignition switch off, perform lock and unlock operations using the door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins, and then select the vehicle model manually.

Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start (CAN). While using the GTS, periodically perform lock and unlock operations using the door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

The smart entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING

·

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

·

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

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model)>CUSTOMIZE PARAMETERS

·

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

·

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

·

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

·

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



PROCEDURE

1.CHECK FOR DTC
a.

Using the GTS, check for certification ECU (smart key ECU assembly) DTCs.

Body Electrical > Power Source Control > Trouble Codes
50001 454
Body Electrical > Entry&Start > Trouble Codes
50001 440

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



A

2.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - POWER SOURCE)

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

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


2.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - POWER SOURCE)
a.

Disconnect the 4F power distribution box assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
4F-1 - Body ground Ignition switch off 11 to 14 V



Result:
Proceed to
OK
NG



OK

3.CHECK POWER DISTRIBUTION BOX ASSEMBLY (ACC RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK POWER DISTRIBUTION BOX ASSEMBLY (ACC RELAY)
a.

Remove the power distribution box assembly.

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


b.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.


c.

Connect the auxiliary battery terminal (+) to the 4B-39 terminal.


d.

Connect the auxiliary battery terminal (-) to the 4B-36 terminal.

B574904C10
4.875,0.135 5.281,0.396 0.406,0.26 1.74,0.115 2.156,0.375 0.417,0.26 5,0.177 5.313,0.375 0.313,0.198 10 false 4F 1.865,0.156 2.177,0.354 0.313,0.198 10 false 4B 0.156,0.125 0.469,0.323 0.313,0.198 10 false *a
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



e.

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

Standard Resistance:
Tester Connection Condition Specified Condition
4F-1 - 4B-12 Auxiliary battery voltage applied between terminals 4B-39 and 4B-36 Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL