RM3660EC _58 Vehicle Interior _080747 THEFT DETERRENT / KEYLESS ENTRY _0586354 SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series)) C

THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series))  B2782  Power Source Control ECU Malfunction  


DESCRIPTION

The certification ECU (smart key ECU assembly) has a power source mode switching function.

This DTC is stored when the IGE input (the steering lock motor activation permission signal) sent directly from the certification ECU (smart key ECU assembly) to the steering lock ECU (steering lock actuator or upper bracket assembly) is determined to be abnormal.

HINT:

The steering lock ECU (steering lock actuator or upper bracket assembly) is not connected to the CAN communication system. However, the steering lock ECU (steering lock actuator or upper bracket assembly) is connected to the certification ECU (smart key ECU assembly) via LIN communication and communicates with other components via CAN communication through the certification ECU (smart key ECU assembly).


DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2782 Power Source Control ECU Malfunction Either of the following conditions is met (1-trip detection logic (Only output while a malfunction is present and the engine switch is on (IG).)):
·

The steering lock motor activation command circuit has a short circuit.

·

The steering lock motor activation command circuit has an open circuit.


HINT:

If the power supply signal from the LIN communication line does not match the power supply signal from the direct line, the system is determined to be malfunctioning.


·

Steering lock ECU (steering lock actuator or upper bracket assembly)

·

Certification ECU (smart key ECU assembly)

·

Wire harness or connector


DTC Output Confirmation Operation: Perform a steering lock/unlock operation. (The steering locks when a door is opened with the shift lever in P and the engine switch off. The steering unlocks when the engine switch is turned on (ACC) or on (IG) while carrying the key.)

Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
The steering cannot be locked or unlocked. For this reason, the engine cannot be started. Prohibits the engine from being started (the engine does not crank).

Related Data List and Active Test Items
DTC No. Data List and Active Test
B2782 -

WIRING DIAGRAM

B463087E15
0.875,3.375 2.677,3.688 1.802,0.313 10 false : LIN Communication Line 5.552,2.635 7.063,2.99 1.51,0.354 10 false Certification ECU (Smart Key ECU Assembly) 5.552,2.469 6.177,2.75 0.625,0.281 10 false I1 5.99,0.344 6.573,0.552 0.583,0.208 10 false SLR+ 5.719,0.219 6.063,0.542 0.344,0.323 10 false 25 1.885,0.219 2.229,0.542 0.344,0.323 10 false 3 1.552,0.333 1.896,0.656 0.344,0.323 10 false IGE 1.5,2.052 1.844,2.375 0.344,0.323 10 false GND 1.896,1.938 2.24,2.26 0.344,0.323 10 false 1 0.104,2.49 1.771,2.896 1.667,0.406 10 false I59 0.094,2.656 2.76,3.188 2.667,0.531 10 false Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)

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(CAN). 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.

·

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 (NR Series))>HOW TO PROCEED WITH TROUBLESHOOTING

·

When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

Before replacing the steering lock ECU (steering lock actuator or upper bracket assembly) or certification ECU (smart key ECU assembly), refer to Service Bulletin.



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (GROUND)
a.

Disconnect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.


b.
C350526C76
1.5,1.063 1.917,1.313 0.417,0.25 0.896,1.719 1.219,1.719 1.219,1.719 1.219,2.427 true 0.323,0.208 0.635,0.365 0.313,0.156 10 false *a 1.604,1.104 1.99,1.292 0.385,0.188 10 false I59 0.542,1.625 0.979,1.854 0.438,0.229 10 false GND
*a Front view of wire harness connector
(to Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))


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

Standard Resistance:
Tester Connection Condition Specified Condition
I59-1 (GND) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
a.

Connect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.


b.
B518305C01
1.49,0.99 1.896,1.25 0.406,0.26 2.354,2.885 1.885,2.885 1.885,2.885 1.885,1.979 true 2.719,2.677 2.25,2.677 2.25,2.677 2.25,1.99 true 0.188,0.281 0.5,0.438 0.313,0.156 10 false *a 1.604,1.031 2.104,1.302 0.5,0.271 10 false I59 2.448,2.802 2.948,3.073 0.5,0.271 10 false IGE 2.781,2.604 3.281,2.875 0.5,0.271 10 false GND
*a Component with harness connected
(Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition
I59-3 (IGE) - I59-1 (GND) Steering lock motor operating when all conditions met, and then door opened:

The steering is unlocked.

The engine switch is off.

The shift lever is in P.


11 to 14 V → Below 1 V



Result:
Proceed to
OK
NG



OK

3.CLEAR DTC AND DATA LIST MALFUNCTION RECORD

NG

5.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
3.CLEAR DTC AND DATA LIST MALFUNCTION RECORD
a.

Clear the DTCs.

Body Electrical > Entry&Start > Clear DTCs
50002 125

b.

Disconnect the cable from the negative (-) battery terminal, wait for 30 seconds or more, and then reconnect the cable to the negative (-) battery terminal to clear the record of malfunctions stored in the Data List.

CAUTION:

After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notices before proceeding with work.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART



Result:
Proceed to
NEXT



NEXT

4.CHECK FOR DTC
4.CHECK FOR DTC
a.

Perform the DTC output confirmation operation.


b.

Check if DTC B2782 is output.

Body Electrical > Entry&Start > Trouble Codes
50001 125

Result:
Result Proceed to
DTC B2782 is not output A
DTC B2782 is output B



A

SYSTEM RETURNED TO NORMAL (DTC STORED DUE TO BAD CONNECTION, BUT SYSTEM RETURNED TO NORMAL BY RECONNECTING CONNECTOR)

B

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


5.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
a.

Disconnect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.


b.

Disconnect the I1 certification ECU (smart key ECU assembly) connector.


c.

Check for deformation and corrosion of the connector case and terminals.

OK:

There is no deformation or corrosion of the connector case or terminals.



d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I59-3 (IGE) - I1-25 (SLR+) Always Below 1 Ω
I59-3 (IGE) or I1-25 (SLR+) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR