Subaru Forester Technicians Reference Booklet
  1. Manuals
  2. Brands
  3. Subaru Manuals
  4. Automobile
  5. Forester
  6. Technicians reference booklet

Subaru Forester Technicians Reference Booklet

Hide thumbs Also See for Forester:
Table of Contents

Advertisement

Quick Links

Download this manual
Technicians
Reference
Booklet
Evaporative
System Diagnosis
September 2003
MSA5P0922C

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Forester and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Subaru Forester

Summary of Contents for Subaru Forester

  • Page 1 Technicians Reference Booklet Evaporative System Diagnosis September 2003 MSA5P0922C...
  • Page 2 All rights reserved. This book may not be reproduced in whole or in part without the express permission of Subaru of America, Inc. Subaru of America, Inc. reserves the right at any time to make changes or modifications to systems, procedures, descriptions, and illustrations contained in this book without necessarily updating this document.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS Introduction ........................6 Legend ..........................6 Test Sequence ........................7 Purge System Test ......................9 Purge Line 10F ......................11 Purge Line 13F ......................11 Purge Line 13G ......................11 Purge Line 13I ......................11 Purge Line 16F ......................

  • Page 4: Introduction

    000 Model Year Evaporative System Diagnosis Introduction Introduction Introduction Introduction Introduction Testing the on board refueling vapor recovery system involves checking all solenoids, valves and plumbing for air tightness, air flow and proper operation. A failure in any of these items will create a failure in the system. The evaporative system pressure tester must be used with the Select monitor to achieve the correct results.

  • Page 5: Test Sequence

    000 Model Year Evaporative System Diagnosis Abbreviation Component Location Canister Purge Control Solenoid Right underside of intake manifold. Pressure control valve Above rear differential. Drain valve Above canister right rear of vehicle. Shut Off Valve Located on the fuel filler neck behind the right rear inner fender.
  • Page 6 000 Model Year Evaporative System Diagnosis 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line Purge Drain Shut off Valve Pressure Control Valve Fuel Tank and Vent Control Valve Canister Effective 09-25-03...

  • Page 7: Purge System Test

    000 Model Year Evaporative System Diagnosis Purge System Test Purge System Test Purge System Test Purge System Test Purge System Test (11) Activate CPC solenoid with select monitor. (12) Did pressure go to zero immediately? Disconnect CPC-1 from M-1. YES go to step (13). Start engine and check for strong NO go to step (13F).
  • Page 8 000 Model Year Evaporative System Diagnosis 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line Effective 09-25-03...

  • Page 9: Purge Line 10F

    000 Model Year Evaporative System Diagnosis Purge Line 10F Purge Line 10F Purge Line 10F Purge Line 10F Purge Line 10F (13G5) Pressurize. (13G6) Disconnect CPC-7 from CPC-8. (10F) Disconnect CPC-2 from CPC solenoid. (13G7) Does pressure go to zero immediately? (10F1) Connect ST plug to CPC-2.
  • Page 10 000 Model Year Evaporative System Diagnosis 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line Effective 09-25-03...

  • Page 11: Purge Line 16F

    000 Model Year Evaporative System Diagnosis Purge Line 16F Purge Line 16F Purge Line 16F Purge Line 16F18 Purge Line 16F18 Purge Line 16F18 Purge Line 16F Purge Line 16F Purge Line 16F18 Purge Line 16F18 (16F) Turn CPC solenoid off with select monitor. (16F18) Turn off CPC solenoid with select monitor.
  • Page 12 000 Model Year Evaporative System Diagnosis 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line 2000 Legacy Purge Line Effective 09-25-03...

  • Page 13: Purge Line 16F34

    000 Model Year Evaporative System Diagnosis Purge Line 16F34 Purge Line 16F34 Purge Line 16F34 Purge Line 16F34 Purge Line 16F34 Notes: (16F34) Does pressure hold? YES – Replace metal hose “CPC-5 to CPC-6” and go to step (8). NO – Go to step (16F35). (16F35) Disconnect CPC-3 from CPC solenoid.

  • Page 14: Drain System Test

    000 Model Year Evaporative System Diagnosis 2000 Legacy Drain Line 2000 Legacy Drain Line 2000 Legacy Drain Line 2000 Legacy Drain Line 2000 Legacy Drain Line Does pressure hold? YES go to step (5). Purge NO, replace Adapter-1 and go to step (1). Drain Shut off Valve Remove ST-plug from ST-adapter-1.

  • Page 15: Drain System Test 9F

    000 Model Year Evaporative System Diagnosis Drain System Test 9F Drain System Test 9F Drain System Test 9F Drain System Test 9F Drain System Test 9F Notes: (9F) Disconnect D-5 from filter. (9F1) Pressurize Did pressure hold? YES go to step (9F2). NO , replace hose from D-5 to D-6 or remove obstruction from hose.
  • Page 16 000 Model Year Evaporative System Diagnosis Purge Drain Shut off Valve Pressure Control Valve Fuel Tank and Vent Control Valve Canister Effective 09-25-03...

  • Page 17: Shut Off Valve Test

    000 Model Year Evaporative System Diagnosis Shut Off Valve Test Shut Off Valve Test Shut Off Valve Test Shut Off Valve Test Shut Off Valve Test Notes: Step 1 through 4 tests the vacuum hose from SOV-12 to the shut off valve, the shut off valve itself, and the vacuum hose from the shut off valve to the pressure control valve for restrictions and blockages.
  • Page 18 000 Model Year Evaporative System Diagnosis Effective 09-25-03...

  • Page 19: Shut Off Valve Test 6F

    000 Model Year Evaporative System Diagnosis Shut Off Valve Test 6F Shut Off Valve Test 6F Shut Off Valve Test 6F Shut Off Valve Test 6F12 Shut Off Valve Test 6F12 Shut Off Valve Test 6F12 Shut Off Valve Test 6F Shut Off Valve Test 6F Shut Off Valve Test 6F12 Shut Off Valve Test 6F12...
  • Page 20 000 Model Year Evaporative System Diagnosis Effective 09-25-03...

  • Page 21: Shut Off Valve Test 9F

    000 Model Year Evaporative System Diagnosis Shut Off Valve Test 9F Shut Off Valve Test 9F Shut Off Valve Test 9F Shut Off Valve Test 9F Shut Off Valve Test 9F (9G12) Pressurize Does pressure hold? (9F) Go to step (9G) YES, replace rubber hose SOV-7 to SOV- Shut Off Valve Test 9G Shut Off Valve Test 9G...
  • Page 22 000 Model Year Evaporative System Diagnosis Purge Drain Shut off Valve Pressure Control Valve Fuel Tank and Vent Control Valve Canister Effective 09-25-03...

  • Page 23: Pressure Control Valve Test

    000 Model Year Evaporative System Diagnosis Pressure Control Valve Test Pressure Control Valve Test Pressure Control Valve Test Pressure Control Valve Test Pressure Control Valve Test Notes: Step 1 through 8 will test the Pressure control valve for electrical and mechanical operation. Remove ST plug from PCV-1.

  • Page 24: Fuel Tank And Vent Control Valve Fuel Tank And Vent Control Valve Test

    000 Model Year Evaporative System Diagnosis Purge Drain Shut off Valve Pressure Control Valve Fuel Tank and Vent Control Valve Canister Fuel Tank and Vent Control Valve Fuel Tank and Vent Control Valve Fuel Tank and Vent Control Valve Fuel Tank and Vent Control Valve Fuel Tank and Vent Control Valve Fuel Tank and Vent Control Valve Test Fuel Tank and Vent Control Valve Test...
  • Page 25 000 Model Year Evaporative System Diagnosis • Adjust the Select Monitor to read the fuel Loosen connection V-7. Do not remove at tank pressure. this time. Picture 124. • Check and record the fuel tank pressure. (With the cap off the pressure should be near zero.) •...
  • Page 26 000 Model Year Evaporative System Diagnosis Effective 09-25-03...

  • Page 27: Fuel Tank And Vent Control Valve Test 10F

    (10F1) Remove all fuel and tank pressure. PT-1. (10F2) Follow instructions in the appropriate (13F3) Remove V-2 from vent control valve. Subaru service manual for removing the (13F4) Pressurize fuel tank Did pressure hold? (10F3) Plug all inlets and outlets from the fuel YES , replace or remove obstruction from tank and external valves.

  • Page 28: Canister Test

    000 Model Year Evaporative System Diagnosis Purge Drain Shut off Valve Pressure Control Valve Fuel Tank and Vent Control Valve Canister Canister Test Canister Test Canister Test Canister Test Canister Test Steps 1 through 8 tests the air tightness of the canister. Connect adapter-3 to fuel tank hose connection of canister.
  • Page 29 000 Model Year Evaporative System Diagnosis Vent Valve Test Vent Valve Test Vent Valve Test Vent Valve Test Vent Valve Test Pressurize tank through Port B or fuel hose. Allow tank pressure to escape through Port B. Apply pressure to Port A. Tank pressure should then stay in tank.
  • Page 30 000 Model Year Evaporative System Diagnosis Pressure Control Valve Drain Valve CPC-16 D-1 F-1 PCV-2 PCV-1 Canister Pressure Sensor Fuel Pump under rear seat Pressure Control Valve Effective 09-25-03...
  • Page 31 000 Model Year Evaporative System Diagnosis Canister Purge Control solenoid Quick Connector on Vent Hose (Located in cargo area of station wagon, trunk of sedan.) CPC-2 CPC-3 CPC-9 CPC-8 CPC-1 CPC-6 CPC-7 Effective 09-25-03...
  • Page 32 000 Model Year Evaporative System Diagnosis SOV-12 SOV-12 SOV-10 SOV-14 SOV-15 SOV-16 Effective 09-25-03...
  • Page 33 000 Model Year Evaporative System Diagnosis Notes: Effective 09-25-03...
  • Page 34 Notes:...

Table of Contents