WIRING SYSTEM > Engine Wiring Harness and Transmission Cord
LOCATION
Connector | Connecting to | ||||
No. | Pole | Color | Area | No. | Description |
E2 | 54 | Black | A-3 | B21 | Bulkhead wiring harness |
E3 | 16 | Brown | A-3 | B22 | |
E4 | 2 | Blue | B-4 | Purge control solenoid valve | |
E5 | 2 | Dark gray | B-2 | Fuel injector No. 1 | |
E6 | 2 | Dark gray | A-2 | Fuel injector No. 3 | |
E8 | 2 | Black | B-2 | Engine coolant temperature sensor | |
E10 | 3 | Black | B-3 | Crankshaft position sensor | |
E11 | 1 | — | B-3 | Oil pressure switch | |
E14 | 2 | Black | B-3 | Knock sensor | |
E16 | 2 | Dark gray | B-4 | Fuel injector No. 2 | |
E17 | 2 | Dark gray | B-4 | Fuel injector No. 4 | |
E18 | 6 | Dark gray | A-3 | EGR control valve | |
E21 | 3 | Black | A-3 | Manifold absolute pressure sensor | |
E24 | 4 | Light gray | B-1 | Front oxygen (A/F) sensor | |
E25 | 4 | Black | B-1 | Rear oxygen sensor | |
E31 | 3 | Black | B-2 | Ignition coil No. 1 | |
E32 | 3 | Black | B-4 | Ignition coil No. 2 | |
E33 | 3 | Black | A-2 | Ignition coil No. 3 | |
E34 | 3 | Black | B-4 | Ignition coil No. 4 | |
E35 | 3 | Light gray | C-3 | Intake camshaft position sensor LH | |
E36 | 3 | Light gray | B-1 | Intake camshaft position sensor RH | |
E37 | 2 | Black | C-3 | Intake oil control solenoid LH | |
E38 | 2 | Black | B-1 | Intake oil control solenoid RH | |
E51 | 5 | Light gray | B-4 | Tumble generator valve actuator LH | |
E55 | 5 | Light gray | A-2 | Tumble generator valve actuator RH | |
E57 | 6 | Black | A-3 | Electronic throttle control | |
E62 | 3 | Light gray | B-1 | Exhaust camshaft position sensor RH | |
E63 | 2 | Black | B-1 | Exhaust oil control solenoid RH | |
E65 | 3 | Light gray | B-3 | Exhaust camshaft position sensor LH | |
E66 | 2 | Black | C-3 | Exhaust oil control solenoid LH | |
E75 | 2 | Black | B-3 | Engine oil temperature sensor | |
E130 | 1 |
| B-3 | Oil level switch | |
| |||||
• MT model
Connector | Connecting to | ||||
No. | Pole | Color | Area | No. | Description |
T1 | 2 | Gray | C-1 | B24 | Bulkhead wiring harness |
T2 | 2 | Brown | C-1 | B25 | |
| |||||
• CVT model
Connector | Connecting to | ||||
No. | Pole | Color | Area | No. | Description |
T3 | 16 | Dark gray | D-4 | B12 | Bulkhead wiring harness |
T4 | 12 | Gray | D-4 | B11 | |
T7 | 9 | Black | D-4 | Inhibitor switch | |
AT1 | 3 | Black | D-4 | Primary speed sensor | |
AT4 | 3 | Dark gray | D-5 | Secondary speed sensor | |
AT5 | 3 | Light gray | D-5 | Turbine speed sensor | |
AT6 | 3 | Black | D-4 | Secondary pressure sensor | |
| |||||

Engine electrical system Wiring diagram
Eyesight system Wiring diagramLight control switch
CAUTION
Extended use of vehicle lighting while the engine is not running may
lead to battery discharge in the Subaru Ascent.
Before leaving your Subaru Ascent unattended, ensure that the light control
switch is set to the OFF position. Even though the lights may automatically
turn off ...
Inspection
DRIVE SHAFT SYSTEM > Front Drive ShaftINSPECTIONCheck the removed parts for damage, wear, corrosion etc. If faulty, repair or replace.• PTJ (pillow tripod joint)Check for seizure, corrosion, damage, wear and excessive play.• EBJ (high-efficiency compact ball fixed joint)Check for seiz ...
Specification
IGNITION(H4DO) > General DescriptionSPECIFICATIONItemSpecificationsIgnition coilManufacturer and typeHitachi: EIC-2230Ignition systemIndependent ignition coilSpark plugManufacturer and typeNGK: SILZKAR7B11Thread size (diameter, pitch, length)mm12, 1.25, 26.5Spark plug gapmm (in)Standard1.0 — 1. ...