Check Memory Height Switch Input Circuit

Wiring diagram: 

Power rear gate system Ref. to WIRING SYSTEM>POWER REAR GATE SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DATA MONITOR. 

   Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [Power Rear Gate]. Ref. to POWER REAR GATE (DIAGNOSTICS)>DATA MONITOR .

   • Memory stop SW

   Does the display switch between OFF ←→ ON according to memory height SW operation?

   Yes:  Input circuit is normal.

   No:  Go to  2.

2. CHECK HARNESS (OPEN CIRCUIT). 
   1. Disconnect the Power rear gate Control Module connector in the order of (R423) → (R422).
   2. Disconnect the memory height SW connector.
   3. Measure the resistance between Power rear gate Control Module connector and memory height SW connector.

      Connector & terminal 

      (R422) No. 8 - (i257) No. 1:

   Is the resistance less than 10 Ω?

   Yes:  Go to  3.

   No:  Repair or replace the open circuit of harness.

3. CHECK HARNESS (GROUND SHORT CIRCUIT). 

   Measure the resistance between Power rear gate Control Module connector and chassis ground.

   Connector & terminal 

   (R422) No. 8 - Chassis ground:

   Is the resistance 1 MΩ or more?

   Yes:  Go to  4.

   No:  Repair or replace the short circuit of the harness.

4. CHECK HARNESS (OPEN CIRCUIT). 

   Measure the resistance between memory height SW connector and chassis ground.

   Connector & terminal 

   (i257) No. 4 - Chassis ground:

   Is the resistance less than 10 Ω?

   Yes:  Go to  5.

   No:  Repair or replace the open circuit of harness.

5. CHECK MEMORY HEIGHT SW. 

   Measure the resistance between switch terminals.

   Terminals 

   No. 1 - No. 4:

   Is the resistance 1 MΩ or more at OFF, and less than 1 Ω at ON?

   Yes:  Go to  6.

   No:  Replace the memory height SW. Ref. to POWER REAR GATE SYSTEM>MEMORY HEIGHT SWITCH .

6. CHECK CONNECTOR. 

   Is there poor contact of connector?

   Yes:  Repair or replace the poor contact of connector.

   No:  Replace Power rear gate Control Module. Ref. to POWER REAR GATE SYSTEM>POWER REAR GATE CONTROL MODULE .