Rear Window Defogger System does not Operate [08/2013 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.
5. Perform the active test according to the display on the Techstream.
   AIR CONDITIONER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Defogger Relay (Rear)	Rear window defogger	OFF/ON	-

   Result

   Result	Proceed to
   Rear window defogger does not operate.	A
   Rear window defogger operates (w/ Multi-display).	B
   Rear window defogger operates (w/o Multi-display).	C

B → See step   11 

C → See step   12 

A: Go to next step 

1. Remove the DEFOG relay from the luggage room junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3 - 4	Battery voltage not applied between terminals	Below 1 Ω
   3 - 4	Battery voltage applied between terminals 1 and 2	10 kΩ or higher
   3 - 5	Battery voltage not applied between terminals	10 kΩ or higher
   3 - 5	Battery voltage applied between terminals 1 and 2	Below 1 Ω

NG → REPLACE DEFOGGER RELAY (DEFOG) 

OK: Go to next step 

1. Reconnect the DEFOG relay to the luggage room junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the J58 connector from the air conditioning amplifier assembly.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J58-3 (RDFG) - J58-20 (GND)	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Air Conditioning Amplifier Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the J58 connector to the air conditioning amplifier assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   J58-3 (RDFG) - J58-20 (GND)	Window defogger switch on	Below 1 V
   J58-3 (RDFG) - J58-20 (GND)	Window defogger switch off	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Air Conditioning Amplifier Assembly)

NG → See step   10 

OK: Go to next step 

1. Remove the DEFOG relay from the luggage room junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Luggage room junction block assembly DEFOG relay terminal 5 - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to luggage room junction block assembly)

NG → REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the defogger fuse and radio setting condenser (installed inside luggage room junction block assembly) from the luggage room junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Luggage room junction block assembly radio setting condenser (installed inside luggage room junction block assembly) terminal 1 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	DEFOG Fuse
   *2	Front view of wire harness connector (to luggage room junction block assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the radio setting condenser (installed inside luggage room junction block assembly).
2. Check the rear window defogger operation.

   OK

   The rear window defogger operates normally.

NG → END (RADIO SETTING CONDENSER (INSTALLED INSIDE LUGGAGE ROOM JUNCTION BLOCK ASSEMBLY) WAS DEFECTIVE) 

OK: Go to next step 

1. Remove the defogger relay from the luggage room junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the g1 back window glass battery side connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Luggage room junction block DEFOG relay terminal 3 - g1-1 (B)	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Luggage Room Junction Block Assembly
   *2	Front view of wire harness connector (to Back Window Glass)
   *3	DEFOG Relay

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the g2 back window glass body ground side connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   g2-1 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Back Window Glass)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   13 

1. Replace the air conditioning amplifier assembly. Refer to REMOVAL [08/2013 - ] .
2. Check the window defogger operation.

   Result

   Result	Proceed to
   Rear window defogger operates.	A
   Rear window defogger does not operate (w/ Multi-display).	B
   Rear window defogger does not operate (w/o Multi-display).	C

B → See step   14 

C → See step   15 

A → END (AIR CONDITIONING AMPLIFIER ASSEMBLY WAS DEFECTIVE)