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Home >> Subaru >> 2019 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Power Rear Gate System (Diagnostics) >> Diagnostics with Phenomenon >> Inspection >> Check Memory Height Switch Input Circuit

Check Memory Height Switch Input Circuit

NOTE: Before performing diagnosis, initialize PRG SYS by opening PRG in manual operation, and then operating the power rear gate auto closer from the partially latched state.

Wiring diagram: 

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

G13203676Courtesy of SUBARU OF AMERICA, INC.
  1. CHECK DATA MONITOR. 

    Using Subaru Select Monitor, check [Memory stop SW]. Ref. to POWER REAR GATE (DIAGNOSTICS)>DATA MONITOR .

    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 and terminal 

      (R422) No. 8 - (i93) 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 and 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 and terminal 

    (i93) 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 .

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