LIGHTING (INT)  LIGHTING SYSTEM  Door Unlock Detection Switch Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of each door unlock detection switch.

WIRING DIAGRAM

E212453E47
5.646,1.396 5.958,1.74 0.313,0.344 10 false 18 5.604,2.615 6.052,2.969 0.448,0.354 10 false MB 4.438,2.417 4.865,2.854 0.427,0.438 10 false 23 4.438,3.448 4.823,3.802 0.385,0.354 10 false 38 4.427,3.646 4.771,3.885 0.344,0.24 10 false 3E 4.427,2.615 4.854,2.875 0.427,0.26 10 false 3E 6,1.583 6.458,1.76 0.458,0.177 10 false LSFR 2.698,0.469 3.198,0.771 0.5,0.302 10 false LSSR 6,2.615 6.458,2.792 0.458,0.177 10 false LSR 5.688,0.365 5.969,0.656 0.281,0.292 10 false 7 5.688,2.427 6.042,2.771 0.354,0.344 10 false 5 5.594,0.552 6.063,0.896 0.469,0.344 10 false E31 5.594,1.583 6.135,2 0.542,0.417 10 false E31 6,0.552 6.458,0.729 0.458,0.177 10 false LSFL 1.604,0.74 1.948,0.917 0.344,0.177 10 false H8 1.604,0.906 3.74,1.083 2.135,0.177 10 false Front Door Lock Assembly LH*2 1.594,1.771 1.938,1.948 0.344,0.177 10 false G7 1.594,1.938 3.844,2.135 2.25,0.198 10 false Front Door Lock Assembly RH*1 1.615,2.813 1.958,2.99 0.344,0.177 10 false K3 1.615,2.969 3.656,3.156 2.042,0.188 10 false Rear Door Lock Assembly LH*2 1.604,3.844 1.948,4.021 0.344,0.177 10 false J3 1.604,4 3.667,4.219 2.063,0.219 10 false Rear Door Lock Assembly RH*2 1.844,0.469 2.052,0.771 0.208,0.302 10 false 7 3.146,0.469 3.417,0.76 0.271,0.292 10 false 8 2.698,1.5 3.208,1.76 0.51,0.26 10 false LSSR 1.844,1.5 2.156,1.771 0.313,0.271 10 false 8 2.031,1.5 2.313,1.74 0.281,0.24 10 false E 2.031,0.469 2.281,0.719 0.25,0.25 10 false E 3.146,1.5 3.427,1.781 0.281,0.281 10 false 7 2.698,2.531 3.198,2.823 0.5,0.292 10 false LSSR 1.854,2.531 2.26,2.833 0.406,0.302 10 false 9 2.031,2.531 2.354,2.781 0.323,0.25 10 false E 3.146,2.531 3.385,2.792 0.24,0.26 10 false 6 2.698,3.563 3.156,3.844 0.458,0.281 10 false LSSR 1.854,3.563 2.208,3.813 0.354,0.25 10 false 9 2.031,3.563 2.333,3.802 0.302,0.24 10 false E 3.146,3.563 3.396,3.833 0.25,0.271 10 false 6 4.302,3.948 5.969,4.385 1.667,0.438 10 false Instrument Panel Junction Block Assembly 5.458,4.76 7.156,5.177 1.698,0.417 10 false Main Body ECU (Multiplex Network Body ECU) 0.406,5.219 4.25,5.625 3.844,0.406 10 false *2: w/ Smart Entry and Start System 0.406,4.875 4.25,5.281 3.844,0.406 10 false *1: w/ Wireless Door Lock Control System

PROCEDURE

1.READ VALUE USING GTS
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 Lock Pos Front door RH unlock detection switch signal LOCK or UNLOCK LOCK: Front door RH locked
UNLOCK: Front door RH unlocked 		*1
FL Door Lock Pos Front door LH unlock detection switch signal LOCK or UNLOCK LOCK: Front door LH locked
UNLOCK: Front door LH unlocked 		*2
RR-Door Lock Pos SW Rear door RH and LH unlock detection switch signal ON or OFF ON: Rear door RH or LH unlocked
OFF: Rear door RH and LH locked 		*2
RL-Door Lock Pos SW Rear door RH and LH unlock detection switch signal ON or OFF ON: Rear door RH or LH unlocked
OFF: Rear door RH and LH locked 		*2

*1: w/ Wireless Door Lock Control System

*2: w/ Smart Entry and Start System


Body Electrical > Main Body > Data List
Tester Display
FR Door Lock Pos
FL Door Lock Pos
RR-Door Lock Pos SW
RL-Door Lock Pos SW
50003 123 196,198,51,52
OK:

Normal conditions listed above are displayed.



Result:
Result Proceed to
OK A
NG ("FL Door Lock Pos" is not normal) B
NG ("FR Door Lock Pos" is not normal) C
NG (Both "RL-Door Lock Pos SW" and "RR-Door Lock Pos SW" are not normal) D



A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE


B

2.INSPECT FRONT DOOR LOCK ASSEMBLY LH

C

4.INSPECT FRONT DOOR LOCK ASSEMBLY RH

D

6.INSPECT REAR DOOR LOCK ASSEMBLY LH
2.INSPECT FRONT DOOR LOCK ASSEMBLY LH
a.

Remove the front door lock assembly LH.

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>REMOVAL


b.

Inspect the front door lock assembly LH.

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>INSPECTION


Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE FRONT DOOR LOCK ASSEMBLY LH

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>REMOVAL


3.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
a.

Disconnect the E31 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
H8-8 (LSSR) - E31-7 (LSFL) Always Below 1 Ω
H8-8 (LSSR) or E31-7 (LSFL) - Body ground Always 10 kΩ or higher
H8-7 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT FRONT DOOR LOCK ASSEMBLY RH
a.

Remove the front door lock assembly RH.

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>REMOVAL


b.

Inspect the front door lock assembly RH.

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>INSPECTION


Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE FRONT DOOR LOCK ASSEMBLY RH

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>REMOVAL


5.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
a.

Disconnect the E31 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
G7-7 (LSSR) - E31-18 (LSFR) Always Below 1 Ω
G7-7 (LSSR) or E31-18 (LSFR) - Body ground Always 10 kΩ or higher
G7-8 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.INSPECT REAR DOOR LOCK ASSEMBLY LH
a.

Remove the rear door lock assembly LH.

Click hereVehicle Interior>DOOR LOCK>REAR DOOR LOCK>REMOVAL


b.

Inspect the rear door lock assembly LH.

Click hereVehicle Interior>DOOR LOCK>REAR DOOR LOCK>INSPECTION


Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

NG

REPLACE REAR DOOR LOCK ASSEMBLY LH

Click hereVehicle Interior>DOOR LOCK>REAR DOOR LOCK>REMOVAL


7.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)
a.

Disconnect the 3E instrument panel junction block assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
K3-6 (LSSR) - 3E-23 Always Below 1 Ω
K3-6 (LSSR) or 3E-23 - Body ground Always 10 kΩ or higher
K3-9 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

8.INSPECT REAR DOOR LOCK ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.INSPECT REAR DOOR LOCK ASSEMBLY RH
a.

Remove the rear door lock assembly RH.

Click hereVehicle Interior>DOOR LOCK>REAR DOOR LOCK>REMOVAL


b.

Inspect the rear door lock assembly RH.

Click hereVehicle Interior>DOOR LOCK>REAR DOOR LOCK>INSPECTION


Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

NG

REPLACE REAR DOOR LOCK ASSEMBLY RH

Click hereVehicle Interior>DOOR LOCK>REAR DOOR LOCK>REMOVAL


9.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
J3-6 (LSSR) - 3E-38 Always Below 1 Ω
J3-6 (LSSR) or 3E-38 - Body ground Always 10 kΩ or higher
J3-9 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

10.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
E258622C06
1.198,0.323 1.521,0.573 0.323,0.25 4.583,0.396 4.906,0.646 0.323,0.25 3.417,1.365 3.542,1.031 false 1.26,0.354 1.573,0.552 0.313,0.198 10 3E 0.229,0.146 0.542,0.344 0.313,0.198 10 *a 4.646,0.438 4.958,0.635 0.313,0.198 10 MB 3.292,1.396 3.708,1.573 0.417,0.177 9 LSR
*a Component without harness connected
(Instrument Panel Junction Block Assembly) 		- -


a.

Remove the instrument panel junction block assembly.

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


b.

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

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


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3E-23 - MB-5 (LSR) Always Below 1 Ω
3E-38 - MB-5 (LSR) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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