RM3660EC _59 Vehicle Exterior _080745 WINDOW / GLASS _0600556 WINDOW DEFOGGER SYSTEM(except NR Series Engine) J

WINDOW / GLASS WINDOW DEFOGGER SYSTEM(except NR Series Engine) Rear Window Defogger System does not Operate

DESCRIPTION

When the rear defogger switch on the air conditioning control assembly is operated, an operation request signal is sent to the air conditioning amplifier assembly via LIN communication. When the air conditioning amplifier assembly receives an operation request signal, an operation request signal is sent to the main body ECU (multiplex network body ECU) via CAN communication. The main body ECU (multiplex network body ECU) turns on the RR DEF relay through the IC of the power distribution box assembly and the window defogger operates.

WIRING DIAGRAM

4.99,1.719 6.979,2.115 1.99,0.396 10 false Window Defogger Switch (Air Conditioning Control Assembly) 0.625,4.979 2.26,5.406 1.635,0.427 10 false Main Body ECU (Multiplex Network Body ECU) 2.969,4.99 5.167,5.313 2.198,0.323 10 false Power Distribution Box Assembly 5.427,3.875 5.74,4.073 0.313,0.198 10 false 43 5.375,4.104 5.688,4.302 0.313,0.198 10 false 10G 4.552,3.438 4.865,3.635 0.313,0.198 10 false +B1 2.271,3.49 2.594,3.667 0.323,0.177 10 false 22 2.25,3.708 2.563,3.906 0.313,0.198 10 false MB 3.031,1.708 4.615,2.135 1.583,0.427 10 false Air Conditioning Amplifier Assembly 5.344,6.26 5.76,6.469 0.417,0.208 10 false O114 3.552,6.25 3.865,6.448 0.313,0.198 10 false w1 3.865,6.146 4.177,6.344 0.313,0.198 10 false E 5.167,6.146 5.479,6.344 0.313,0.198 10 false B 0.698,6.615 2.625,6.854 1.927,0.24 10 false : CAN Communication Line 0.677,7.354 2.594,7.615 1.917,0.26 10 false : CXPI Communication Line 3.688,6.698 5.656,7.073 1.969,0.375 10 false Back Door Glass (Rear Window Defogger Wire) 3.594,6.031 3.917,6.208 0.323,0.177 10 false 1 3.167,3.708 3.479,3.906 0.313,0.198 10 false IC 5.458,6.031 5.781,6.208 0.323,0.177 10 false 1 3.719,4.385 4.365,4.594 0.646,0.208 10 false RR DEF 1.771,3.698 2.417,3.958 0.646,0.26 10 false CXP1 0.677,6.99 2.604,7.229 1.927,0.24 10 false : LIN Communication Line

CAUTION / NOTICE / HINT

NOTICE:: ·

If the window defogger system is operated when the auxiliary battery voltage is low, due to the electrical load limit control that gives voltage supply priority to the power steering system, the window defogger system may not operate. In this case, check the vehicle control history (RoB) of the power steering system and check that "Battery Voltage Drop: X208F" is not stored before proceeding with troubleshooting.

for Gasoline Model: Click hereSteering>POWER ASSIST SYSTEMS>POWER STEERING SYSTEM (for Gasoline Model)>VEHICLE CONTROL HISTORY202307,999999,_55,_080761,_0392052,RM100000002DAFF,

for HV Model: Click hereSteering>POWER ASSIST SYSTEMS>POWER STEERING SYSTEM (for HV Model)>VEHICLE CONTROL HISTORY202304,999999,_55,_080761,_0392075,RM100000002B8OL,

·

The window defogger system uses the CAN communication system and CXPI communication system. First, confirm that there are no malfunctions in the CAN communication system and CXPI communication system. Refer to How to Proceed with Troubleshooting.

Click hereVehicle Exterior>WINDOW / GLASS>WINDOW DEFOGGER SYSTEM (except NR Series Engine)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_59,_080745,_0600556,RM100000002BD15,

PROCEDURE

1.READ VALUE USING GTS (REAR DEFOGGER INPUT SIGNAL)

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

Body Electrical > Power Distribution Box > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Rear Defogger Input Signal	Window defogger switch signal input condition	OFF or ON	OFF: Window defogger switch is off ON: Window defogger switch is on	-

Body Electrical > Power Distribution Box > Data List

Tester Display
Rear Defogger Input Signal

50003 475 1280

OK:: On the GTS screen, ON or OFF is displayed accordingly.

Result:

Proceed to
OK
NG

2.READ VALUE USING GTS (REAR DEFOGGER OUTPUT SIGNAL)

4.CHECK AIR CONDITIONING SYSTEM

2.READ VALUE USING GTS (REAR DEFOGGER OUTPUT SIGNAL)

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

Body Electrical > Power Distribution Box > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Rear Defogger Output Signal	Window defogger output condition	OFF or ON	OFF: Window defogger does not operate ON: Window defogger operates	-

Body Electrical > Power Distribution Box > Data List

Tester Display
Rear Defogger Output Signal

50003 475 1281

OK:: On the GTS screen, ON or OFF is displayed accordingly.

Result:

Proceed to
OK
NG

3.CHECK HARNESS AND CONNECTOR (REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS) - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202304,202502,_57,_080742,_0392832,RM100000002B2HJ,202502,999999,_57,_080742,_0392832,RM100000002RPNZ,

3.CHECK HARNESS AND CONNECTOR (REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS) - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

Disconnect the O114 and w1 rear window defogger wire (back window glass) connectors.

Disconnect the 10G power distribution box assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O114-1 (B) - 10G-43	Always	Below 1 Ω
O114-1 (B) or 10G-43 - Body ground	Always	10 kΩ or higher
w1-1 (E) - Body ground	Always	Below 1 Ω

Result:

Proceed to
OK
NG

REPLACE REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS)

Click hereVehicle Exterior>WINDOW / GLASS>BACK WINDOW GLASS>REMOVAL202307,202406,_59,_080745,_0392471,RM100000002D3V3,202406,999999,_59,_080745,_0392471,RM100000002N6UO,

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK AIR CONDITIONING SYSTEM

Check the air conditioning system.

for HV Model (8ZR-FXE): Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for HV Model (8ZR-FXE))>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080733,_0598792,RM100000002B60B,

for HV Model (M20F-FXS, M20G-FXS): Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for HV Model (M20F-FXS, M20G-FXS))>HOW TO PROCEED WITH TROUBLESHOOTING202307,999999,_58,_080733,_0613723,RM100000002CP96,

for Gasoline Model (M20A-FKS, M20C-FKS, M20E-FKS) with Automatic Air Conditioning System: Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (M20A-FKS, M20C-FKS, M20E-FKS) with Automatic Air Conditioning System)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080733,_0598793,RM100000002B61O,

for Gasoline Model (M20A-FKS, M20E-FKS) with Manual Air Conditioning System for Electrical Control Type: Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (M20A-FKS, M20E-FKS) with Manual Air Conditioning System for Electrical Control Type)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080733,_0591212,RM100000002AHA3,

for Gasoline Model (M15B-FKS, M15C-FKS) with Manual Air Conditioning System for Electrical Control Type: Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (M15B-FKS, M15C-FKS) with Manual Air Conditioning System for Electrical Control Type)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080733,_0591213,RM100000002B6B5,

for Gasoline Model (M15B-FKS) with Manual Air Conditioning System for Mechanical Control Type: Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (M15B-FKS) with Manual Air Conditioning System for Mechanical Control Type)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080733,_0591214,RM100000002ALGK,

HINT:: Both the window defogger system operation signal and air conditioning system operation signal are transmitted to the air conditioning amplifier assembly via the same communication line.

OK:: The air conditioning system operates normally.

Result:

Proceed to
OK
NG

5.CHECK AIR CONDITIONING CONTROL ASSEMBLY

GO TO AIR CONDITIONING SYSTEM

5.CHECK AIR CONDITIONING CONTROL ASSEMBLY

Check that the indicator illuminates when the window defogger switch is on.

OK:: Defogger indicator illuminates.

Result:

Proceed to
OK
NG

6.PERFORM ACTIVE TEST USING GTS

REPLACE AIR CONDITIONING CONTROL ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL>REMOVAL202304,999999,_58,_080733,_0393743,RM100000002B1IV,

6.PERFORM ACTIVE TEST USING GTS

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

Body Electrical > Air Conditioner > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Rear Defogger Relay	Rear window defogger wire	OFF or ON	-

Body Electrical > Air Conditioner > Active Test

Tester Display
Rear Defogger Relay

50004 450 7

OK:: The window defogger system operates normally.

Result:

Proceed to
OK
NG

REPLACE AIR CONDITIONING CONTROL ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL>REMOVAL202304,999999,_58,_080733,_0393743,RM100000002B1IV,

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL202307,999999,_58,_080733,_0393744,RM100000002CH99,