FUEL INJECTION (FUEL SYSTEMS)(H4DOTC) > Throttle Body

INSPECTION

1. THROTTLE SENSOR INSPECTION (METHOD WITH CIRCUIT TESTER)

1. Remove the lower inner trim of passenger’s side.

2. Turn over the floor mat of passenger’s seat.

3. Remove the protect cover.

• LHD model

• RHD model

4. Remove the nuts and bolts which hold the ECM to the bracket.

• LHD model

• RHD model

5. Turn the ignition switch to ON. (engine OFF)

6. Measure the voltage between ECM connector terminals.

(A)

To ECM connector

Throttle sensor

Accelerator pedal

Terminal No.

Standard

Main

Not depressed (Full closed)

18 (+) and 29 (−)

Approx. 0.6 V

Depressed (Full opened)

Approx. 3.96 V

Sub

Not depressed (Full closed)

28 (+) and 29 (−)

Approx. 1.48 V

Depressed (Full opened)

Approx. 4.17 V

7. After inspection, install the related parts in the reverse order of removal.

2. THROTTLE SENSOR INSPECTION (METHOD WITH SUBARU SELECT MONITOR)

1. Turn the ignition switch to ON. (engine OFF)

2. Read the throttle opening angle signal and voltage of throttle sensor using Subaru Select Monitor.

Throttle sensor

Throttle opening angle signal

Standard

Main

0.0 %

Approx. 0.6 V

100.0 %

Approx. 3.96 V

Sub

0.0 %

Approx. 1.48 V

100.0 %

Approx. 4.17 V

3. OTHER INSPECTIONS

1. Check that the throttle body has no deformation, cracks or other damages.

2. Check that the engine coolant hose has no cracks, damage or loose part.