RM35X0E _58 Vehicle Interior _078336 DOOR LOCK _0379906 KEY REMINDER WARNING SYSTEM J

DOOR LOCK  KEY REMINDER WARNING SYSTEM  Key Reminder Buzzer does not Sound  


DESCRIPTION

The key reminder warning buzzer sounds when the driver door is opened while the ignition switch is off or ACC. The key reminder warning buzzer is activated when the main body ECU (multiplex network body ECU) sends an unlock warning switch signal and driver door courtesy light switch signal to the combination meter assembly via CAN communication.

WIRING DIAGRAM

for LHD:


B522723E12
0.927,0.688 1.24,0.885 0.313,0.198 10 false V20 0.948,1.833 1.26,2.031 0.313,0.198 10 false N29 0.927,0.833 2.552,1.25 1.625,0.417 10 false Front Door Courtesy Light Switch Assembly LH 0.938,2 2.438,2.417 1.5,0.417 10 false Un-lock Warning Switch Assembly 2.313,1.521 2.5,1.719 0.188,0.198 10 false 1 1.104,1.521 1.292,1.719 0.188,0.198 10 false 2 2.313,0.354 2.5,0.552 0.188,0.198 10 false 1 3.177,1.542 3.49,1.74 0.313,0.198 10 false 41 4.031,0.271 4.219,0.49 0.188,0.219 10 false 1 4.031,1.417 4.198,1.625 0.167,0.208 10 false 3 2.688,2.292 3.01,2.49 0.323,0.198 10 false 3A 4.021,1.646 4.333,1.844 0.313,0.198 10 false A 3.948,0.479 4.26,0.677 0.313,0.198 10 false N19 4.354,1.635 4.927,1.875 0.573,0.24 10 false KSW 4.354,0.479 4.927,0.719 0.573,0.24 10 false FLCY 5.875,2.708 7.073,3.177 1.198,0.469 10 false Combination Meter Assembly 4.292,2.708 5.438,3.219 1.146,0.51 10 false Main Body ECU (Multiplex Network Body ECU) 2.688,2.49 4.281,2.927 1.594,0.438 10 false Instrument Panel Junction Block Assembly 0.865,3.354 2.615,3.594 1.75,0.24 10 false : CAN Communication Line 1.292,1.552 1.75,1.75 0.458,0.198 10 false UN- 1.938,1.552 2.396,1.75 0.458,0.198 10 false UN+


for RHD:


B522723E13
0.906,0.688 1.26,0.938 0.354,0.25 10 false W16 0.948,1.833 1.26,2.031 0.313,0.198 10 false N29 0.917,0.833 2.51,1.313 1.594,0.479 10 false Front Door Courtesy Light Switch Assembly RH 0.938,2.01 2.438,2.427 1.5,0.417 10 false Un-lock Warning Switch Assembly 2.313,1.521 2.5,1.719 0.188,0.198 10 false 1 1.104,1.521 1.292,1.719 0.188,0.198 10 false 2 2.313,0.354 2.5,0.552 0.188,0.198 10 false 1 3.156,1.542 3.469,1.74 0.313,0.198 10 false 41 4.031,0.271 4.219,0.49 0.188,0.219 10 false 6 4.031,1.417 4.198,1.625 0.167,0.208 10 false 3 2.667,2.292 2.979,2.49 0.313,0.198 10 false 3A 4.031,1.635 4.344,1.833 0.313,0.198 10 false A 3.948,0.479 4.26,0.677 0.313,0.198 10 false N19 4.354,1.635 4.927,1.875 0.573,0.24 10 false KSW 4.344,0.479 4.917,0.719 0.573,0.24 10 false FRCY 5.875,2.708 7.073,3.177 1.198,0.469 10 false Combination Meter Assembly 4.281,2.708 5.438,3.219 1.156,0.51 10 false Main Body ECU (Multiplex Network Body ECU) 2.656,2.479 4.26,2.844 1.604,0.365 10 false Instrument Panel Junction Block Assembly 0.865,3.354 2.615,3.594 1.75,0.24 10 false : CAN Communication Line 1.292,1.552 1.75,1.75 0.458,0.198 10 false UN- 1.938,1.552 2.396,1.75 0.458,0.198 10 false UN+


CAUTION / NOTICE / HINT

NOTICE:
·

The key reminder warning system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the key reminder warning system after confirming that the communication systems are functioning properly.

Click hereVehicle Interior>DOOR LOCK>KEY REMINDER WARNING SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING

·

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.



PROCEDURE

1.PERFORM ACTIVE TEST USING GTS (Buzzer Operation)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Combination Meter / Active Test.


e.

Perform the Active Test according to the display on the GTS.

Body Electrical > Combination Meter > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Buzzer Operation (800Hz, Vol L, W/ Damping) Combination meter buzzer
·

Frequency: 800Hz

·

Volume: Large

·

Fading tone


ON -
Body Electrical > Combination Meter > Active Test
Tester Display
Buzzer Operation (800Hz, Vol L, W/ Damping)
50004 409 13

Result:
Result Proceed to
Combination meter buzzer sounds A
Combination meter buzzer does not sound B



A

2.READ VALUE USING GTS (FR Door Courtesy SW, FL Door Courtesy SW)

B

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL


2.READ VALUE USING GTS (FR Door Courtesy SW, FL Door Courtesy SW)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Main Body / Data List.


e.

Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
FR Door Courtesy SW Front door courtesy light switch RH signal*1 ON or OFF ON: Front door RH open
OFF: Front door RH closed 		-
FL Door Courtesy SW Front door courtesy light switch LH signal*2 ON or OFF ON: Front door LH open
OFF: Front door LH closed 		-

*1: for RHD

*2: for LHD


Body Electrical > Main Body > Data List
Tester Display
FR Door Courtesy SW
FL Door Courtesy SW
50003 123 197,199
OK:

The GTS indicates ON or OFF according to the driver door condition shown in the table.



Result:
Proceed to
OK
NG



OK

3.READ VALUE USING GTS (Key Unlock Warning SW)

NG

GO TO LIGHTING SYSTEM (Door Courtesy Switch Circuit)

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>Door Courtesy Switch Circuit


3.READ VALUE USING GTS (Key Unlock Warning SW)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Main Body / Data List.


e.

Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Key Unlock Warning SW Un-lock warning switch signal ON or OFF ON: Key in ignition key cylinder
OFF: No key in ignition key cylinder 		-
Body Electrical > Main Body > Data List
Tester Display
Key Unlock Warning SW
50003 123 32
OK:

The GTS indicates ON or OFF according to whether the key is in the ignition key cylinder.



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

4.INSPECT UN-LOCK WARNING SWITCH ASSEMBLY
4.INSPECT UN-LOCK WARNING SWITCH ASSEMBLY
a.

Remove the un-lock warning switch assembly.

Click hereVehicle Interior>DOOR LOCK>UNLOCK WARNING SWITCH>REMOVAL


b.

Inspect the un-lock warning switch assembly.

Click hereVehicle Interior>DOOR LOCK>UNLOCK WARNING SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (UN-LOCK WARNING SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

NG

REPLACE UN-LOCK WARNING SWITCH ASSEMBLY

Click hereVehicle Interior>DOOR LOCK>UNLOCK WARNING SWITCH>REMOVAL


5.CHECK HARNESS AND CONNECTOR (UN-LOCK WARNING SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)
a.

Disconnect the N29 un-lock warning switch assembly connector.


b.

Disconnect the 3A instrument panel junction block assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3A-41 - N29-1 (UN+) Always Below 1 Ω
N29-2 (UN-) - Body ground Always Below 1 Ω
N29-1 (UN+) or 3A-41 - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.INSPECT 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

B472423C16
1.917,0.917 2.302,1.219 0.385,0.302 5.406,0.635 5.802,0.938 0.396,0.302 0.781,2.177 0.531,2.177 0.531,2.177 0.531,1.594 false 5.521,0.719 5.833,0.917 0.313,0.198 10 false 3A 2.063,0.969 2.375,1.167 0.313,0.198 10 false A 0.875,2.083 1.333,2.281 0.458,0.198 10 false KSW 0.115,0.104 0.427,0.302 0.313,0.198 10 false *a
*a Component without harness connected
(Instrument Panel Junction Block Assembly) 		- -



b.

Remove the main body ECU (multiplex network body ECU) from 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


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3A-41 - A-3 (KSW) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


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