CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Secondary Speed Sensor
INSPECTION
1. Set the ST between the TCM and bulkhead harness.
| ST 18460AA040 | CHECK BOARD |
2. Set the probe of oscilloscope to the check board connector.
Connector & terminal
No. 13 (+) — No. 42 (−):

(A) | + probe |
(B) | − probe |
3. Start and warm up the engine.
4. Lift up the vehicle.
CAUTION:
Lift up the vehicle until the tire bottom is 0.3 m (0.98 ft) or more above the ground.
5. Shift the select lever to “D” range.
6. Check the waveform and output voltage of the secondary speed sensor with engine idling.
NOTE:
The waveform cycle changes as the speed changes.

RemovalDtc p0138 o2 sensor circuit high voltage bank 1 sensor 2
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0138 O2 SENSOR CIRCUIT HIGH VOLTAGE BANK 1 SENSOR 2DTC detecting condition:Detected when two consecutive driving cycles with fault occur.CAUTION:After servicing or replacing faulty parts, perform Clear Memory ...
Fuel pressure Inspection
MECHANICAL(H4DO) > Fuel PressureINSPECTION1. Release the fuel pressure. Fuel > PROCEDURE">2. Open the fuel filler lid and remove the fuel filler cap.NOTE:This operation is required to release the inner pressure of the fuel tank.3. Disconnect the fuel delivery tube from the fuel delive ...
Replacing bulbs
WARNING
Lighting bulbs in your Subaru Ascent can become extremely hot during operation.
Always switch off the lights and allow sufficient time for the bulbs to cool before
attempting replacement. Failure to do so may result in burns or injury.
CAUTION
Always replace bulbs in your Subaru Ascen ...