FUEL INJECTION (FUEL SYSTEMS)(H4DOTC) > Throttle Body
1. THROTTLE SENSOR INSPECTION (METHOD WITH CIRCUIT TESTER)
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 |
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.