RM35X0E _58 Vehicle Interior _078381 LIGHTING (INT) _0380033 LIGHTING SYSTEM J

LIGHTING (INT)  LIGHTING SYSTEM  IG Signal Circuit  


DESCRIPTION

This circuit detects the ignition switch ON or off condition, and sends it to the main body ECU (multiplex network body ECU).

WIRING DIAGRAM

w/o Stop and Start System:


E416752E01
3.51,3.667 5.156,4.052 1.646,0.385 10 false Instrument Panel Junction Block Assembly 5.323,4.031 6.969,4.417 1.646,0.385 10 false A 5.75,3.156 6.469,3.427 0.719,0.271 10 false GND 5.729,0.656 6.448,0.927 0.719,0.271 10 false IG 5.458,0.656 6.177,0.927 0.719,0.271 10 false 32 5.438,3.073 6.156,3.344 0.719,0.271 10 false 11 4.208,2.729 4.927,3 0.719,0.271 10 false IG1 NO.1 5.323,4.177 6.969,4.563 1.646,0.385 10 false Main Body ECU (Multiplex Network Body ECU) 4.052,1.51 5.125,1.833 1.073,0.323 10 false ECU-IG1 NO.1 3.396,1.354 4.469,1.677 1.073,0.323 10 false 3D 3.385,0.771 4.458,1.094 1.073,0.323 10 false 3A 3.406,2.406 4.479,2.729 1.073,0.323 10 false 3A 3.406,3.188 4.479,3.51 1.073,0.323 10 false 3B 3.031,1.917 4.104,2.24 1.073,0.323 10 false 3E 3.042,2.104 4.115,2.427 1.073,0.323 10 false *1 3.417,2.104 4.49,2.427 1.073,0.323 10 false *2 3.406,2.229 4.479,2.552 1.073,0.323 10 false 17 3.396,1.917 4.469,2.24 1.073,0.323 10 false 3G 3.438,1.74 4.51,2.063 1.073,0.323 10 false 1 3.063,1.75 4.135,2.073 1.073,0.323 10 false 1 3.396,1.156 4.469,1.479 1.073,0.323 10 false 35 3.406,0.573 4.479,0.896 1.073,0.323 10 false 15 3.438,3.01 4.51,3.333 1.073,0.323 10 false 3 0.885,2.406 2.531,2.792 1.646,0.385 10 false from Ignition Switch 1.365,1.896 3.01,2.281 1.646,0.385 10 false from Battery 0.281,3.688 1.927,4.073 1.646,0.385 10 false *1: for LHD 0.302,4.073 1.948,4.458 1.646,0.385 10 false *2: for RHD


w/ Stop and Start System:


E416753E01
3.667,1.542 5.302,1.927 1.635,0.385 10 false 3A 3.667,1.708 5.281,2.104 1.615,0.396 10 false Instrument Panel Junction Block Assembly 5.479,0.792 6.271,1.063 0.792,0.271 10 false 32 5.729,0.802 6.521,1.073 0.792,0.271 10 false IG 3.479,0.792 4.271,1.063 0.792,0.271 10 false 15 0.406,0.906 2.625,1.354 2.219,0.448 10 false from Engine Stop and Start ECU 5.396,1.948 7.083,2.344 1.688,0.396 10 false A 5.396,2.083 7.083,2.479 1.688,0.396 10 false Main Body ECU (Multiplex Network Body ECU)


CAUTION / NOTICE / HINT

NOTICE:
·

w/o Stop and Start System:

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

·

w/ Entry and Start System:

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



PROCEDURE

1.CHECK VEHICLE TYPE
a.

Check vehicle type.


Result:
Result Proceed to
w/ Entry and Start System A
w/o Entry and Start System B



A

2.CHECK FOR DTC (ENTRY AND START SYSTEM [for Start Function])

B

3.READ VALUE USING GTS
3.READ VALUE USING GTS
a.

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

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>DATA LIST / ACTIVE TEST

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
IG SW Ignition switch ON signal OFF or ON OFF: Ignition switch off
ON: Ignition switch ON 		"OFF" is also displayed for this item when the ignition switch is ACC.
Body Electrical > Main Body > Data List
Tester Display
IG SW
50003 123 30
OK:

Normal conditions listed above are displayed.



Result:
Result Proceed to
OK A
NG (w/o Stop and Start System) B
NG (w/ Stop and Start System) C



A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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


B

4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY AND BODY GROUND)

C

6.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY)
4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY AND BODY GROUND)
a.

Disconnect the instrument panel junction block assembly connectors.

E409866C03
2.01,0.188 2.406,0.427 0.396,0.24 1.042,1.969 1.438,2.208 0.396,0.24 3.521,1.99 3.917,2.229 0.396,0.24 5.083,0.156 5.479,0.396 0.396,0.24 0.063,0.052 0.375,0.25 0.313,0.198 10 false *a 2.135,0.24 2.448,0.438 0.313,0.198 10 false 3A 1.156,2 1.469,2.198 0.313,0.198 10 false 3G 3.625,2.042 3.938,2.24 0.313,0.198 10 false 3E 1.531,2 1.844,2.198 0.313,0.198 10 false *B 3.979,2.01 4.292,2.208 0.313,0.198 10 false *A 5.188,0.198 5.5,0.396 0.313,0.198 10 false 3B
*A for LHD *B for RHD
*a Front view of wire harness connector
(to Instrument Panel Junction Block Assembly) 		- -



b.

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

Standard Voltage:
for LHD
Tester Connection Switch Condition Specified Condition
3E-1 - Body ground Ignition switch off 11 to 14 V
3A-17 - Body ground Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V

for RHD
Tester Connection Switch Condition Specified Condition
3G-1 - Body ground Ignition switch off 11 to 14 V
3A-17 - Body ground Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V



c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3B-3 - Body ground Always Below 1 Ω
3A-15 - 3D-35 Always Below 1 Ω
3A-15 or 3D-35 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK 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


E409872C08
1.771,0.229 2.25,0.438 0.479,0.208 5.188,0.25 5.667,0.458 0.479,0.208 2.479,1.823 2.958,2.031 0.479,0.208 6.104,1.708 6.583,1.917 0.479,0.208 6.104,2.083 6.583,2.292 0.479,0.208 1.635,2.021 1.823,2.021 1.823,2.021 2.156,2.385 true 4.365,2.385 4.656,2.052 4.656,2.052 4.833,2.052 true 5.354,0.271 5.667,0.469 0.313,0.198 10 false 3B 1.938,0.24 2.25,0.438 0.313,0.198 10 false 3A 2.635,1.833 2.948,2.031 0.313,0.198 10 false A 4.896,1.969 5.385,2.188 0.49,0.219 10 false IG 1.24,1.938 1.729,2.156 0.49,0.219 10 false GND1 0.188,0.135 0.5,0.333 0.313,0.198 10 false *a 6.25,1.729 6.563,1.927 0.313,0.198 10 false 3E 6.25,2.104 6.563,2.302 0.313,0.198 10 false 3G 6.688,1.719 7,1.917 0.313,0.198 10 false *A 6.688,2.063 7,2.26 0.313,0.198 10 false *B
*A for LHD *B for RHD
*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:
for LHD
Tester Connection Condition Specified Condition
3E-1 - 3D-35 Battery not connected to 3A-17 and 3B-3 10 kΩ or higher
Battery positive (+) → 3A-17
Battery negative (-) → 3B-3 		Below 1 Ω
A-11 (GND1) - 3B-3 Always Below 1 Ω

for RHD
Tester Connection Condition Specified Condition
3G-1 - 3D-35 Battery not connected to 3A-17 and 3B-3 10 kΩ or higher
Battery positive (+) → 3A-17
Battery negative (-) → 3B-3 		Below 1 Ω
A-11 (GND1) - 3B-3 Always Below 1 Ω



Result:
Result Proceed to
OK (for LHD) A
OK (for RHD) B
NG (for LHD) C
NG (for RHD) D



A

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL


B

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


C

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL


D

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


6.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY)
a.
E417102C01
1.323,0.167 1.74,0.427 0.417,0.26 0.083,0.073 0.396,0.271 0.313,0.198 10 false *a 1.448,0.208 1.76,0.406 0.313,0.198 10 false 3A
*a Front view of wire harness connector
(to Instrument Panel Junction Block Assembly)


Disconnect the instrument panel junction block assembly connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
3A-15 - Body ground Ignition switch ON 10.5 to 16 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

7.CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

GO TO STOP AND START SYSTEM

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


7.CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
a.

Remove the instrument panel junction block assembly.

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL

E416754C01
1.51,0.24 1.958,0.49 0.448,0.25 4.844,0.323 5.292,0.573 0.448,0.25 6.156,1.396 6.365,1.396 6.365,1.396 6.646,1.021 true 0.188,0.135 0.5,0.292 0.313,0.156 10 false *a 1.656,0.271 1.906,0.469 0.25,0.198 10 false 3A 5,0.375 5.25,0.573 0.25,0.198 10 false A 5.917,1.281 6.167,1.479 0.25,0.198 10 false IG
*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.

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
A-32 (IG) - 3A-15 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 (for RHD)>REMOVAL


NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL