Check With SUBARU Select Monitor

1. Turn the ignition switch to ON.
2. Read DTCs of the following items using the Subaru Select Monitor. Ref. to LAN SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
   • [Body Control]
   • [Front Relay Control Module]
   • [Cockpit Control]
   • [Air Conditioner]

Is DTC displayed?

Yes:  Perform the diagnosis for the displayed DTCs.

No:  Go to  2.

Using the Subaru Select Monitor, check setting of [wiperdeicer]. Ref. to BODY CONTROL (DIAGNOSTICS)>CUSTOMIZE .

Is it set to [Support]?

Yes:  Go to  3.

No:  Change the customize setting to [Support].

Operate the rear defogger switch on the center information display.

Does the rear defogger switch light illuminate or go off corresponding to the switch operation?

Yes:  Go to  4.

No:  Go to  8.

Display data of the following items using Subaru Select Monitor. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR .

• [Front Relay Control Module]
  • [BATT Voltage (Control)]
  • [BATT Voltage (BACKUP)]
  • [IGN Voltage]
• [Body control]
  • [BATT voltage (control)]
  • [BATT voltage (BACKUP)]
  • [IGN voltage]

Is the voltage 9 - 16 V?

Yes:  Go to  5.

No:  Check the harnesses of the battery, fuse, connector and power supply circuit.

Check the wiper deicer system operation. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>ACTIVE TEST .

Does the wiper deicer system operate normally?

Yes:  Go to  6.

No:  Check the harnesses of the heat wire, relay and output circuit. If there is no abnormality, replace the front relay control module.

Using Subaru Select Monitor, display [wiper deicer output] in [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR .

Does the display change between [OFF] ←→ [ON], when the rear defogger switch is operated?

Yes:  Replace the front relay control module. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>FRONT RELAY CONTROL MODULE .

No:  Go to  7.

Using Subaru Select Monitor, display [wiper deicer output] in [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR .

Does the display change between [OFF] ←→ [ON], when the rear defogger switch is operated?

Yes:  Replace the front relay control module. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>FRONT RELAY CONTROL MODULE .

No:  Replace the body integrated unit. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT .

1. Switch to dealership mode. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DEALERSHIP MODE>OPERATION>PROCEDURE TO SWITCH TO DEALERSHIP MODE .
2. Select [Function Check]. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DEALERSHIP MODE>OPERATION>SERVICE INSPECTION .
3. Check [Rr DEF] and [Push] are displayed when the rear defogger switch is pressed.
4. Check [Push] is switched to [Release] when the rear defogger switch is released.

Does it operate normally?

Yes:  It is considered that trouble symptom was improved. Reproduce the failure, and then perform the inspection again.

No:  Replace the center information display. Ref. to ENTERTAINMENT & MONITORING>COCKPIT DISPLAY .