NOTE:
The wiper deicer operates with the rear window defogger at the same time.
|
Symptoms |
Inspection order |
|
Wiper deicer does not operate. |
(1) Check the fuse. (2) Check the wiper deicer relay. (3) Check the rear defogger switch. (4) Check the heat wire. (5) Check the wiring harness. (6) Check body integrated unit. |
NOTE:
• Wiper deicer system can be customized on the Subaru Select Monitor, when the body integrated unit customize setting {A/C ECM setting} is “support”. (Auto A/C model)
• Set the system using the “Rr defogger op. mode”, and setting will be the same as rear defogger system setting.
|
System name |
Initial setting |
Customize setting |
|
Rr defogger op. mode |
OFF after 15 min. |
Continuous operation* |
*: If any of the following conditions occur, the continuous operation is terminated and turned OFF in 15 minutes.
• Ambient temperature remains 5°C (41°F) or more for 10 seconds.
• The ambient sensor error has occurred.
• Vehicle speed of 15 km/h (9 MPH) or less continues 15 minutes. (OFF when conditions are met)
• CAN communication error has occurred.
• Battery voltage (10 V or less) continues for 30 seconds.
2. CHECK WITH SUBARU SELECT MONITOR
CAUTION:
Before performing the inspection, check the following settings.
• Is the “wiperdeicer” setting “support”? If “no support”, set to “support” using customize setting.
• “Rr defogger op. mode” setting → Initial setting or customize setting
1. Check the input signal when the rear window defogger switch is operated using Subaru Select Monitor.
(1) Prepare the Subaru Select Monitor. 
(2) Turn the ignition switch to ON (engine OFF) and run the “PC application for Subaru Select Monitor”.
(3) On «System Selection Menu» display, select {Integ. unit mode}.
(4) Select the {Wiper Deicer Output} from the {Current Data Display & Save}.
(5) Operate the rear window defogger switch to check the displayed data (ON/OFF).
2. Check the operation when the rear window defogger switch is ON.
• When the customize setting is “Continuous”, the continuous operation without any termination conditions is correct.
• When the customize setting is “Normal”, the cycle of 15-minute operation then OFF is correct.
3. If the correct operation as described in the above 2) is not carried out, replace the body integrated unit.
Refer to “HEAT WIRE INSPECTION” of “Rear Window Defogger System”.
NOTE:
Heat wire inspection needs removing/installing procedure of instrument panel assembly.