RM38N0EC _58 Vehicle Interior _111833 LIGHTING (INT) _0499871 LIGHTING SYSTEM J

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

E444729E01
1.031,1 1.49,1.198 0.458,0.198 10 false G12 1.031,1.156 4.552,1.354 3.521,0.198 10 false Front Door Lock with Motor Assembly LH 2.438,0.656 3.052,0.854 0.615,0.198 10 false LSSR 1.75,0.656 1.906,0.854 0.156,0.198 10 false E 1.573,0.656 1.729,0.854 0.156,0.198 10 false 7 2.427,1.802 3.042,2 0.615,0.198 10 false LSSR 2.448,2.979 3.063,3.177 0.615,0.198 10 false LSSR 2.438,4.156 3.052,4.354 0.615,0.198 10 false LSSR 1.76,1.802 1.917,2 0.156,0.198 10 false E 1.75,2.969 1.906,3.167 0.156,0.198 10 false E 1.75,4.156 1.906,4.354 0.156,0.198 10 false E 2.865,1.792 3.021,1.99 0.156,0.198 10 false 7 1.563,1.802 1.719,2 0.156,0.198 10 false 8 2.885,0.646 3.042,0.844 0.156,0.198 10 false 8 1.552,4.156 1.813,4.344 0.26,0.188 10 false 9 2.885,2.969 3.146,3.156 0.26,0.188 10 false 6 1.01,2.156 1.323,2.354 0.313,0.198 10 false G11 1.01,2.313 4.531,2.51 3.521,0.198 10 false Front Door Lock with Motor Assembly RH 1.052,3.281 1.365,3.479 0.313,0.198 10 false H4 1.052,3.448 4.26,3.958 3.208,0.51 10 false Rear Door Lock with Motor Assembly LH 1.063,4.479 1.375,4.677 0.313,0.198 10 false H3 1.052,4.646 4.26,4.844 3.208,0.198 10 false Rear Door Lock with Motor Assembly RH 1.552,2.969 1.719,3.177 0.167,0.208 10 false 9 5.781,2.875 6.073,3.104 0.292,0.229 10 false 10 5.833,1.698 6.146,1.896 0.313,0.198 10 false 3 5.833,0.542 6.146,0.74 0.313,0.198 10 false 9 6.167,0.583 6.781,0.781 0.615,0.198 10 false LSFL 6.146,1.729 6.76,1.927 0.615,0.198 10 false LSFR 6.156,4.073 6.615,4.271 0.458,0.198 10 false LSWR 5.5,4.719 7.156,5.125 1.656,0.406 10 false Main Body ECU (Multiplex Network Body ECU) 6.573,1.5 6.885,1.698 0.313,0.198 10 false +B 6.563,0.354 6.875,0.552 0.313,0.198 10 false +B 6.573,2.677 6.885,2.875 0.313,0.198 10 false +B 2.896,4.146 3.156,4.354 0.26,0.208 10 false 6 5.771,0.75 6.083,0.948 0.313,0.198 10 false E37 5.76,1.896 6.073,2.094 0.313,0.198 10 false E37 5.75,3.063 6.063,3.26 0.313,0.198 10 false E37 5.76,4.24 6.073,4.438 0.313,0.198 10 false E36 6.156,2.885 6.615,3.083 0.458,0.198 10 false LSWL 6.563,3.854 6.875,4.052 0.313,0.198 10 false +B 5.792,4.042 6.083,4.271 0.292,0.229 10 false 23

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.


PROCEDURE

1.READ VALUE USING GTS
a.

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 Position Switch Status Front door RH unlock detection switch signal Lock or Unlock Lock: Front door RH locked
Unlock: Front door RH unlocked 		-
FL Door Lock Position Switch Status Front door LH unlock detection switch signal Lock or Unlock Lock: Front door LH locked
Unlock: Front door LH unlocked 		-
RR Door Lock Position Switch Status Rear door RH unlock detection switch signal Lock or Unlock Lock: Rear door RH locked
Unlock: Rear door RH unlocked 		-
RL Door Lock Position Switch Status Rear door LH unlock detection switch signal Lock or Unlock Lock: Rear door LH locked
Unlock: Rear door LH unlocked 		-
Body Electrical > Main Body > Data List
Tester Display
FR Door Lock Position Switch Status
FL Door Lock Position Switch Status
RR Door Lock Position Switch Status
RL Door Lock Position Switch Status
50003 449 20,21,22,23
OK:

Normal conditions listed above are displayed.



Result:
Result Proceed to
OK A
NG ("FL Door Lock Position Switch Status" is not normal) B
NG ("FR Door Lock Position Switch Status" is not normal) C
NG ("RL Door Lock Position Switch Status" is not normal) D
NG ("RR Door Lock Position Switch Status" is not normal) E



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 WITH MOTOR ASSEMBLY LH

C

4.INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH

D

6.INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH

E

8.INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH
2.INSPECT FRONT DOOR LOCK WITH MOTOR 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 WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

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


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

Disconnect the E37 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

Click Location & Routing(G12,E37)Location & Routing

Click Connector(G12)Body>Front Door Wire RH / Front Door Wire LH>Front Door Lock with Motor Assembly LH

Click Connector(E37)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Multiplex Network Body ECU

G12-8 (LSSR) - E37-9 (LSFL) Always Below 1 Ω
G12-8 (LSSR) or E37-9 (LSFL) - Body ground Always 10 kΩ or higher
G12-7 (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 WITH MOTOR 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 WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH

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


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

Disconnect the E37 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

Click Location & Routing(G11,E37)Location & Routing

Click Connector(G11)Body>Front Door Wire RH / Front Door Wire LH>Front Door Lock with Motor Assembly RH

Click Connector(E37)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Multiplex Network Body ECU

G11-7 (LSSR) - E37-3 (LSFR) Always Below 1 Ω
G11-7 (LSSR) or E37-3 (LSFR) - Body ground Always 10 kΩ or higher
G11-8 (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 WITH MOTOR 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 WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH

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


7.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
a.

Disconnect the E37 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

Click Location & Routing(H4,E37)Location & Routing

Click Connector(H4)Body>No. 1 Rear Door Wire / No. 2 Rear Door Wire>Rear Door Lock with Motor Assembly LH

Click Connector(E37)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Multiplex Network Body ECU

H4-6 (LSSR) - E37-10 (LSWL) Always Below 1 Ω
H4-6 (LSSR) or E37-10 (LSWL) - Body ground Always 10 kΩ or higher
H4-9 (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

8.INSPECT REAR DOOR LOCK WITH MOTOR 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 WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH

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


9.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
a.

Disconnect the E36 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

Click Location & Routing(H3,E36)Location & Routing

Click Connector(H3)Body>No. 1 Rear Door Wire / No. 2 Rear Door Wire>Rear Door Lock with Motor Assembly RH

Click Connector(E36)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Multiplex Network Body ECU

H3-6 (LSSR) - E36-23 (LSWR) Always Below 1 Ω
H3-6 (LSSR) or E36-23 (LSWR) - Body ground Always 10 kΩ or higher
H3-9 (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