Subaru Legacy BN/BS (2015-2019) Service Manual: Road test inspection
NOTE: Turn OFF the X mode switch and perform inspection. 1. GENERAL PRECAUTION Road tests should be conducted to properly diagnose the condition of CVT. CAUTION: Always observe the local traffic laws when performing the test. 2. D RANGE SHIFT FUNCTION Make sure that the engine speed is 1,100 — 1,300 r/min while driving on the level road at 50 km/h (31 MPH) after accelerating from halting to 1/4 of accelerator opening angle. Then stop the vehicle. Check normal gear change has occurred while the vehicle speed changes from a constant speed to zero. 3. KICK-DOWN FUNCTION Check if engine speed will rise by operating the accelerator opening angle to the full from a constant speed of 50 km/h (31 MPH) or more. 4. ENGINE BRAKE OPERATION Check down shifting operation, engine braking, and indicators inside the meters. • Drive in “6th speed of manual mode” [70 — 80 km/h (43 — 50 MPH)], and shift down from 6th to 5th. Check if the indicator of combination meter switches “6” > “5”. At the same time, check the engine brake in 5th gear. • Drive in “5th speed of manual mode” [60 — 70 km/h (37 — 43 MPH)], and shift down from 5th to 4th. Check if the indicator of combination meter switches “5” > “4”. At the same time, check the engine brake in 4th gear. • Drive in “4th speed of manual mode” [50 — 60 km/h (31 — 37 MPH)], and shift down from 4th to 3rd. Check if the indicator of combination meter switches “4” > “3”. At the same time, check the engine brake in 3rd gear. • Drive in “3rd speed of manual mode” [30 — 40 km/h (19 — 25 MPH)], and shift down from 3rd to 2nd. Check if the indicator of combination meter switches “3” > “2”. At the same time, check the engine brake in 2nd gear. • Drive in “2nd speed of manual mode” [20 — 30 km/h (12 — 19 MPH)], and shift down from 2nd to 1st. Check if the indicator of combination meter switches “2” > “1”. At the same time, check the engine brake in 1st gear. 5. LOCK-UP FUNCTION When the accelerator is lightly depressed while driving on a flat road in “D” range, check that rpm does not change abruptly. 6. P RANGE OPERATION Stop the vehicle on an uphill grade of 5% or more and shift to the “P” range and apply the electronic parking brake. Check that the vehicle does not move when the parking brake is released. 7. NOISE AND VIBRATION Check for noise and vibration during driving at a constant speed, accelerating, decelerating and manual shift operation. 8. OIL LEAKAGE After the driving test, inspect for leakage of CVTF and differential gear oil from the transmission body. |
Diagnostics with phenomenon inspection
SymptomsFaulty partsStall speed is low after warming-up, with select lever in “D” or “R” range.Engine control systemVehicle does not move despite engine speed rising up, with s ...
Secondary pressure (line pressure) test inspection
CAUTION:• Directly after the vehicle has been running or the engine has been idling for a long time, the CVTF is hot. Be careful not to burn yourself.• Make sure no other person is around ...
Other materials:
Caution
1. SRS AIRBAG SYSTEMAirbag system wiring harness is routed near the body integrated unit and twisted pair line.CAUTION:• Do not use the electrical test equipment on all airbag system wiring harnesses and connectors.• Be careful not to damage the airbag system wiring harness when servicin ...
