Contents Wiring diagrams Section: Engine Control Systems All sections

Speed Control Systems (H4DO): Other Subaru Forester SJ

Engine Control Systems 6 illustrations ~617 words

CAUTION

  1. Prior to starting work, pay special attention to the following: Always wear work clothes, a safety cap, protective shoes. Additionally, wear a helmet, protective goggles, etc. if necessary. Protect the vehicle using a seat cover, fender cover, etc. Prepare the service tools, clean cloth, containers to catch grease and oil, etc.
  2. Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.
  3. When performing a repair, identify the cause of trouble and avoid unnecessary removal, disassembly and replacement.
  4. Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery.
  5. Always use the jack-up point when the shop jacks or rigid racks are used to support the vehicle.
  6. Remove contamination including dirt and corrosion before removal, installation, disassembly or assembly.
  7. Keep the removed parts in order and protect them from dust and dirt.
  8. All removed parts, if to be reused, should be reinstalled in the original positions with attention to the correct directions, etc.
  9. Bolts, nuts and washers should be replaced with new parts as required.
  10. Be sure to tighten the fasteners including bolts and nuts to the specified torque.

GENERAL TOOL

TOOL NAMEREMARKS
Circuit testerUsed for measuring voltage.

Scheme 5

Scheme 5: REMOVAL
  1. Disconnect the ground cable from battery.
  2. Disconnect the connector (A).
  3. Remove the nut (B) securing accelerator pedal assembly, and remove the accelerator pedal assembly.

CHECK ACCELERATOR PEDAL SENSOR AREA (METHOD WITH CIRCUIT TESTER)

  1. Non-turbo model

Scheme 6

Scheme 6

Scheme 7

Scheme 7
  1. Remove the glove box. < Ref. to «REMOVAL»(ref-662136-S17105897562014101300000) , Glove Box. >
  2. Turn the ignition switch to ON. (engine OFF)
  3. Measure the voltage between ECM connector terminals. Main sensor side Sub sensor side Accelerator pedal sensor Accelerator pedal Terminal No. Standard Main Not depressed (full closed) 23 (+) and 29 (-) 0.4 - 1.0 V Depressed (full opened) 2.4 - 3.7 V Sub Not depressed (full closed) 31 (+) and 30 (-) 0.3 - 1.1 V Depressed (full opened) 2.3 - 3.8 V
  4. After inspection, install the related parts in the reverse order of removal.
  1. Turbo model

Scheme 8

Scheme 8

Scheme 9

Scheme 9

Scheme 10

Scheme 10
  1. Disconnect the ground cable from battery.
  2. While pressing the area (A) shown in the figure, move the lock lever (B) in the direction of the arrow to disconnect the connectors from ECM.
  3. Install the special tool between the ECM and body harness and the engine harness. < Ref. to «CAUTION»(ref-662148-S20187103432014101300000) , General Description. > ST 18460AA030 CHECK BOARD
  4. Connect the ground cable to battery.
  5. Turn the ignition switch to ON. (engine OFF)
  6. Measure the voltage between ECM connector terminals using ST. Main sensor side Sub sensor side Accelerator pedal sensor Accelerator pedal Terminal No. Standard Main Not depressed (full closed) 17 (+) and 31 (-) 0.4 - 1.0 V Depressed (full opened) 2.4 - 3.7 V Sub Not depressed (full closed) 29 (+) and 19 (-) 0.4 - 1.0 V Depressed (full opened) 2.4 - 3.7 V
  7. After inspection, install the related parts in the reverse order of removal.

CHECK ACCELERATOR PEDAL SENSOR AREA (METHOD WITH SUBARU SELECT MONITOR)

  1. Turn the ignition switch to ON. (engine OFF)
  2. Read the accelerator pedal opening angle signal and voltage of accelerator pedal sensor using Subaru Select Monitor. < Ref. to «DISPLAY CURRENT ENGINE DATA»(ref-662137-S06151085892014101300000) , OPERATION, Subaru Select Monitor. > < Ref. to «DISPLAY CURRENT ENGINE DATA»(ref-662148-S33420959492014101300000) , OPERATION, Subaru Select Monitor. >
  1. Non-turbo model Accelerator pedal sensor Accelerator pedal opening angle signal Standard Main 0.0% 0.4 - 1.0 V 100.0% 2.4 - 3.7 V Sub 0.0% 0.3 - 1.1 V 100.0% 2.3 - 3.8 V
  2. Turbo model Accelerator pedal sensor Accelerator pedal opening angle signal Standard Main 0.0% 0.4 - 1.0 V 100.0% 2.4 - 3.7 V Sub 0.0% 0.4 - 1.0 V 100.0% 2.4 - 3.7 V