DTC P2008: TGV Control Circuit/Open Bank 1: Notes

DTC detecting condition:

Immediately at fault recognition

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Clear Memory Mode>OPERATION , and inspection mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Inspection Mode>PROCEDURE .
Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM

G11583460

Courtesy of SUBARU OF AMERICA, INC.

CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ASSEMBLY RH CONNECTOR.
1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Disconnect the connector from tumble generator valve assembly RH.
4. Measure the resistance of harness between ECM connector and tumble generator valve assembly RH connector.
  Connector & terminal
  
  (E158) No. 52 - (E55) No. 5:
  
  (E158) No. 13 - (E55) No. 4:
Is the resistance less than 1 Ω?

Yes: Go to 2

No: Repair the harness and connector.

NOTE: In this case, repair the following item:
- Open circuit in harness between ECM connector and tumble generator valve assembly RH connector
- Poor contact of coupling connector
CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ASSEMBLY RH CONNECTOR.
Measure the resistance between ECM connector and chassis ground.

Connector & terminal

(E158) No. 52 - Chassis ground:

(E158) No. 13 - Chassis ground:

Is the resistance 1 MΩ or more?

Yes: Go to 3

No: Repair the short circuit to ground in harness between ECM connector and tumble generator valve assembly RH connector.
CHECK FOR POOR CONTACT.
Check for poor contact of tumble generator valve assembly RH connector.

Is there poor contact of the tumble generator valve assembly RH connector?

Yes: Repair the poor contact of tumble generator valve assembly RH connector.

No: Replace the tumble generator valve assembly RH. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>TUMBLE GENERATOR VALVE