Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Electronic throttle control relay / Inspection

1. Check that the electronic throttle control relay has no deformation, cracks or other damages.

2. Measure the resistance between electronic throttle control relay terminals.

Terminal No.	Standard
1 and 2	1 M- or more
3 and 4	130.4 — 230.8 - (when 20°C (68°F))

3. Connect battery positive terminal to terminal No. 3 and battery ground terminal to terminal No. 4, and measure the resistance between the electronic throttle control relay terminals.

Terminal No.	Standard
1 and 2	Less than 1 -

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the electronic throttle control relay from the main fuse box. ...

Installation

1. Install the electronic throttle control relay to the main fuse box.2. Connect the ground terminal to battery sensor. NOTE ...

Other materials:

Dtc u0401 invalid data received from ecm/pcm "a"
DTC DETECTING CONDITION:Defective data from ECM.TROUBLE SYMPTOM:Defective data on CAN communication occurs.STEPCHECKYESNO1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.Was the basic diagnostic procedure performed up to STEP 8- Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0401 INV ...