RM36D0EC _58 Vehicle Interior _083095 LIGHTING (INT) _0400584 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

E442534E18
5.708,0.948 6.167,1.146 0.458,0.198 10 false IGR 4.135,1 5.969,1.198 1.833,0.198 10 false ECU-IGR NO.2 3.438,1.802 5.271,2 1.833,0.198 10 false IGR-NO.2 2.75,0.833 3.063,1.031 0.313,0.198 10 false 6K 2.74,1.521 3.052,1.719 0.313,0.198 10 false 6B 2.75,2.135 3.063,2.333 0.313,0.198 10 false 6B 2.729,2.74 3.042,2.938 0.313,0.198 10 false 6C 2.781,0.604 2.938,0.802 0.156,0.198 10 false 1 5.708,2.115 6.167,2.313 0.458,0.198 10 false GND1 5.698,2.729 6.156,2.927 0.458,0.198 10 false GND2 5.344,0.708 5.656,0.906 0.313,0.198 10 false 27 5.385,2 5.698,2.198 0.313,0.198 10 false 13 5.365,2.615 5.677,2.813 0.313,0.198 10 false 14 5.292,3.594 6.927,3.948 1.635,0.354 10 false Main Body ECU (Multiplex Network Body ECU) 5.292,3.458 5.448,3.656 0.156,0.198 10 false A 3.052,3.417 4.49,3.802 1.438,0.385 10 false Power Distribution Box Assembly 2.74,1.281 3.052,1.479 0.313,0.198 10 false 11 2.74,1.896 3.052,2.094 0.313,0.198 10 false 36 2.74,2.5 3.052,2.698 0.313,0.198 10 false 41 0.344,0.813 2.177,1.01 1.833,0.198 10 false from Auxiliary Battery 0.292,1.51 1.635,2.677 1.344,1.167 10 false from Certification ECU (Smart Key ECU Assembly)*1 or Ignition Switch*2 0.188,4.031 3.167,4.427 2.979,0.396 10 false *1: w/ Smart Entry and Start System 0.188,4.417 3.167,4.813 2.979,0.396 10 false *2: w/o Smart Entry and Start System

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

w/ Smart 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/ Smart Entry and Start System A
w/o Smart Entry and Start System B



A

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

B

3.READ VALUE USING GTS
2.CHECK FOR DTC (SMART ENTRY AND START SYSTEM [for Start Function])
a.

Check for DTCs.

Body Electrical > Power Source Control > Trouble Codes
50001 454
OK:

Smart entry and start system (for Start Function) DTCs are not output.



Result:
Proceed to
OK
NG



OK

3.READ VALUE USING GTS

NG

GO TO SMART ENTRY AND START SYSTEM (for Start Function)

for HV Model: Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, HV Model)>HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model: Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING


3.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
IGR Power Ignition switch ON signal OFF or ON OFF: Ignition switch off
ON: Ignition switch ON 		-
Body Electrical > Main Body > Data List
Tester Display
IGR Power
50003 449 122
OK:

Normal conditions listed above are displayed.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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


NG

4.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY AND BODY GROUND)
4.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY AND BODY GROUND)
a.

Disconnect the power distribution box assembly connectors.

E442535C06
2.76,0.333 3.156,0.573 0.396,0.24 0.708,0.542 1.104,0.781 0.396,0.24 5.573,0.375 5.969,0.615 0.396,0.24 0.063,0.052 0.375,0.25 0.313,0.198 10 false *a 2.896,0.396 3.208,0.594 0.313,0.198 10 false 6B 0.823,0.604 1.135,0.802 0.313,0.198 10 false 6K 5.698,0.438 6.01,0.635 0.313,0.198 10 false 6C
*a Front view of wire harness connector
(to Power Distribution Box Assembly) 		- -



b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
6K-1 - Body ground Ignition switch off 11 to 14 V
6B-11 - 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
6B-36 - Body ground Always Below 1 Ω
6C-41 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

5.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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

E438202C48
1.74,0.25 2.177,0.552 0.438,0.302 5,0.24 5.438,0.542 0.438,0.302 4.99,2.146 5.427,2.448 0.438,0.302 1.75,2.063 2.188,2.365 0.438,0.302 4.833,3.281 4.99,3.281 4.99,3.281 5.135,2.906 true 6.313,3.313 6.469,3.313 6.469,3.313 6.615,2.938 true 4.844,3.552 5,3.552 5,3.552 5.229,2.938 true 1.875,0.313 2.188,0.51 0.313,0.198 10 false 6C 5.135,0.323 5.448,0.521 0.313,0.198 10 false 6B 5.198,2.25 5.51,2.448 0.313,0.198 10 false A 1.875,2.156 2.188,2.354 0.313,0.198 10 false 6K 0.177,0.177 0.49,0.375 0.313,0.198 10 false *a 4.448,3.229 5.063,3.427 0.615,0.198 10 false GND1 4.458,3.49 5.073,3.688 0.615,0.198 10 false GND2 6.073,3.25 6.688,3.448 0.615,0.198 10 false IGR
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



b.

Remove the main body ECU (multiplex network body ECU) from the power distribution box 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
A-27 (IGR) - 6K-1 Auxiliary battery not connected to 6B-11 and 6B-36 10 kΩ or higher
Auxiliary battery positive (+) → 6B-11
Auxiliary battery negative (-) → 6B-36 		Below 1 Ω
A-13 (GND1) - 6B-36 Always Below 1 Ω
A-16 (GND2) - 6C-41 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 POWER DISTRIBUTION BOX ASSEMBLY

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