FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Throttle Body
INSPECTION
1. THROTTLE SENSOR (METHOD WITH CIRCUIT TESTER)
1. Remove the glove box. Glove Box > REMOVAL">
2. Turn the ignition switch to ON. (engine OFF)
3. 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. 4.0 V | ||
Sub | Not depressed (full closed) | 28 (+) and 29 (−) | Approx. 1.5 V |
Depressed (full opened) | Approx. 4.2 V |
4. After inspection, install the related parts in the reverse order of removal.
2. THROTTLE SENSOR (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. Subaru Select Monitor > OPERATION">
Throttle sensor | Throttle opening angle signal | Standard |
Main | 0.0% | Approx. 0.6 V |
100.0% | Approx. 4.0 V | |
Sub | 0.0% | Approx. 1.5 V |
100.0% | Approx. 4.2 V |
3. OTHER INSPECTIONS
1. Check that the throttle body has no deformation, cracks or other damages.
2. Check that the preheater hose has no cracks, damage or loose part.
Throttle body
RemovalTrailer towing
Your vehicle is designed and intended to
be used primarily as a passenger-carrying
vehicle. Towing a trailer puts additional
loads on your vehicle's engine, drivetrain,
brakes, tires and suspension and has an
adverse effect on fuel economy.
If you do decide to tow a trailer, your safety
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