RM3660EC _59 Vehicle Exterior _080745 WINDOW / GLASS _0600555 WINDOW DEFOGGER SYSTEM(for NR Series Engine) J

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


DESCRIPTION

When the rear window defogger switch on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assembly via LIN communication. When the air conditioning amplifier assembly receives the signal, it turns on the DEF relay to operate the window defogger system.

WIRING DIAGRAM

B533188E15
0.708,1.042 2.229,1.271 1.521,0.229 10 false from Battery 1.938,1.229 2.844,1.417 0.906,0.188 10 false DEF-MAIN 0.177,2.042 1.625,2.26 1.448,0.219 10 false from IG1-NO. 1 Relay 3.135,2.427 4.052,2.625 0.917,0.198 10 false DEF 4.99,1.208 6.667,1.688 1.677,0.479 10 false Rear Window Defogger Wire (Back Window Glass) 5.115,1.958 6.031,2.156 0.917,0.198 10 false RDFG 5.073,4.094 5.563,4.323 0.49,0.229 10 false LIN1 5.646,4.094 6.135,4.354 0.49,0.26 10 false GND 4.917,4.646 6.417,5.063 1.5,0.417 10 false Air Conditioning Amplifier Assembly 2.24,4.521 4.573,4.865 2.333,0.344 10 false Rear Window Defogger Switch (Air Conditioning Control Assembly) 0.708,5.167 2.656,5.406 1.948,0.24 10 false : LIN Communication Line 3.604,4.104 3.958,4.313 0.354,0.208 10 false LIN1 6.135,3.896 6.49,4.104 0.354,0.208 10 false 17 5.719,2.073 6.073,2.281 0.354,0.208 10 false IC 4.823,1.854 5.177,2.063 0.354,0.208 10 false 18 3.792,1.938 4.146,2.146 0.354,0.208 10 false 2 2.719,1.948 3.073,2.156 0.354,0.208 10 false 1 2.74,0.958 3.094,1.167 0.354,0.208 10 false 5 2.74,0.563 3.094,0.771 0.354,0.208 10 false 4 3.792,0.76 4.146,0.969 0.354,0.208 10 false 3 4.76,0.656 5.115,0.865 0.354,0.208 10 false 1 4.635,0.865 4.99,1.073 0.354,0.208 10 false O114 6.271,0.667 6.625,0.875 0.354,0.208 10 false 1 6.208,0.865 6.563,1.063 0.354,0.198 10 false w1 4.75,2.052 5.208,2.25 0.458,0.198 10 false I48 6.083,4.094 6.542,4.292 0.458,0.198 10 false I49 1.885,2.208 3.573,2.406 1.688,0.198 10 false ECU-IG1 NO. 3

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

If the battery voltage becomes low, battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the window defogger system may not operate.



PROCEDURE

1.CHECK AIR CONDITIONING SYSTEM
a.

Check the air conditioning system.

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



OK

2.PERFORM ACTIVE TEST USING GTS

NG

GO TO AIR CONDITIONING SYSTEM

for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type: Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type)>HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model (NR Series) with Manual Air Conditioning System for Mechanical Control Type: Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (NR Series) with Manual Air Conditioning System for Mechanical Control Type)>HOW TO PROCEED WITH TROUBLESHOOTING


2.PERFORM ACTIVE TEST 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 / Air Conditioner / Active Test.


e.

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
Defogger Relay (Rear) Rear window defogger wire (Back window glass) OFF or ON -
Body Electrical > Air Conditioner > Active Test
Tester Display
Defogger Relay (Rear)
50004 121 22
OK:

The window defogger system operates normally.



Result:
Proceed to
OK
NG



OK

3.REPLACE AIR CONDITIONING CONTROL ASSEMBLY

NG

4.INSPECT DEF RELAY
3.REPLACE AIR CONDITIONING CONTROL ASSEMBLY
a.

Replace the air conditioning control assembly with a new or known good one.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PANEL>REMOVAL


b.

Check that the window defogger system operates normally.

Click hereVehicle Exterior>WINDOW / GLASS>WINDOW DEFOGGER SYSTEM (for NR Series Engine)>OPERATION CHECK

OK:

The window defogger system operates normally.



Result:
Proceed to
OK
NG



OK

END (AIR CONDITIONING CONTROL ASSEMBLY WAS DEFECTIVE)

NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL


4.INSPECT DEF RELAY
a.

Inspect the DEF relay.

Click hereVehicle Exterior>WINDOW / GLASS>RELAY>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (DEF RELAY - IG1-NO. 1 RELAY AND BATTERY)

NG

REPLACE DEF RELAY

5.CHECK HARNESS AND CONNECTOR (DEF RELAY - IG1-NO. 1 RELAY AND BATTERY)
a.
B459495C01
0.125,0.083 0.417,0.354 0.292,0.271 10 false *a
*a DEF Relay Holder


Remove the DEF relay from the No. 1 engine room relay block and No. 1 engine room junction block.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
DEF relay holder terminal 1 - Body ground Ignition switch ON 11 to 14 V
DEF relay holder terminal 5 - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (DEF RELAY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (DEF RELAY - AIR CONDITIONING AMPLIFIER ASSEMBLY)
a.
B459495C01
0.125,0.083 0.417,0.354 0.292,0.271 10 false *a
*a DEF Relay Holder


Remove the DEF relay from the No. 1 engine room relay block and No. 1 engine room junction block.


b.

Disconnect the I48 air conditioning amplifier assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
DEF relay holder terminal 2 - I48-18 (RDFG) Always Below 1 Ω
DEF relay holder terminal 2 or I48-18 (RDFG) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (DEF RELAY - REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (DEF RELAY - REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS))
a.
B459495C01
0.125,0.083 0.417,0.354 0.292,0.271 10 false *a
*a DEF Relay Holder


Remove the DEF relay from the No. 1 engine room relay block and No. 1 engine room junction block.


b.

Disconnect the O114 rear window defogger wire (back window glass) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
DEF relay holder terminal 3 - O114-1 Always Below 1 Ω
DEF relay holder terminal 3 or O114-1 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

8.CHECK HARNESS AND CONNECTOR (REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS) - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK HARNESS AND CONNECTOR (REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS) - BODY GROUND)
a.

Disconnect the w1 rear window defogger wire (back window glass) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
W1-1 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

9.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
a.
B511251C06
1.417,0.167 1.833,0.417 0.417,0.25 0.656,0.167 1.073,0.417 0.417,0.25 1.552,1.969 1.323,1.969 1.323,1.969 1.323,1.063 true 0.583,1.938 0.792,1.938 0.792,1.938 0.792,1.156 true 1.5,0.208 1.958,0.406 0.458,0.198 10 false I49 0.167,0.146 0.479,0.344 0.313,0.198 10 false *a 1.604,1.885 2.063,2.083 0.458,0.198 10 false GND 0.104,1.854 0.719,2.052 0.615,0.198 10 false RDFG 0.75,0.208 1.208,0.406 0.458,0.198 10 false I48
*a Component with harness connected
(Air Conditioning Amplifier Assembly)


Reconnect the I48 and I49 air conditioning amplifier assembly connectors.


b.

Reinstall the DEF relay.


c.

Remove the air conditioning amplifier assembly with its connectors still connected.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL


d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
I48-18 (RDFG) - I49-17 (GND) Ignition switch ON, rear window defogger switch on Below 1 V
I48-18 (RDFG) - I49-17 (GND) Ignition switch ON, rear window defogger switch off 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE REAR WINDOW DEFOGGER WIRE (BACK WINDOW GLASS)

Click hereVehicle Exterior>WINDOW / GLASS>WINDOW DEFOGGER WIRE>REPAIR


NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL