Rear Window Defogger System Does Not Operate
WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: Rear Window Defogger System does not Operate
- Rear Window Defogger System does not Operate
DESCRIPTION
When the rear window defogger switch on the air conditioning control panel assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assembly through a LIN communication line. When the air conditioning amplifier assembly receives the signal, it turns on the integration relay to operate the rear window defogger.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK REAR WINDOW DEFOGGER SYSTEM
(a) Active the rear defogger system and check the symptoms.
Result:
B -- CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BACK DOOR GLASS)
C -- CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BACK WINDOW FIX GLASS)
A -- Continue to next step.
2. CHECK POWER STEERING SYSTEM (Battery Voltage Lo Record)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / EMPS / Data List.
(e) Read the Data List according to the display on the Techstream.
EMPS
Result:
B -- GO TO CHARGING SYSTEM Component Tests and General Diagnostics
A -- Continue to next step.
3. PERFORM ACTIVE TEST USING TECHSTREAM (DEFOGGER RELAY)
(a) Enter the following menus: Body Electrical / Air Conditioner / Active Test.
(b) Perform the Active Test according to the display on the Techstream.
Air Conditioner
OK:
The window defogger system operates normally.
NG -- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - INTEGRATION RELAY)
OK -- GO TO AIR CONDITIONING SYSTEM Air Conditioning Control Panel Circuit
4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - INTEGRATION RELAY)
(a) Disconnect the 1G integration relay connector.
(b) Disconnect the L17 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Turn the power switch on (READY).
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Removal
OK -- Continue to next step.
6. INSPECT RADIO SETTING CONDENSER
(a) Remove the radio setting condenser.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE RADIO SETTING CONDENSER
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BODY GROUND)
(a) Disconnect the V1 back door glass battery side connector.
(b) Disconnect the V2 back window fix glass battery side connector.
(c) Disconnect the 1I integration relay connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE INTEGRATION NO.1 RELAY Removal
8. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BACK DOOR GLASS)
(a) Disconnect the V1 back door glass battery side connector.
(b) Disconnect the V10 back door glass body ground side connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BACK DOOR GLASS Removal
9. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BACK WINDOW FIX GLASS)
(a) Disconnect the V2 back window fix glass battery side connector.
(b) Disconnect the V8 back window fix glass body ground side connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BACK WINDOW FIX GLASS Removal