Code No. P084A: Abnormality in Fluid Pressure Sensor Function

DIAGNOSTIC FUNCTION

The CVT-ECU determines that the system is defective when the primary pressure sensor output voltage is outside the predetermined value range.

JUDGEMENT CRITERIA

All the conditions listed below remain for 5 seconds.

The pulley ratio is 0.5 or more, 1.0 or less.
The primary pulley speed is 300 r/min or more.
The secondary pulley speed is 250 r/min or more.
Target shifting speed is 0.1/sec or less.
The primary pressure is outside the predetermined pressure range.

PROBABLE CAUSES

Malfunction of valve body assembly (Faulty primary pressure sensor, secondary pressure sensor)
Damaged wiring harness and connectors
Malfunction of the CVT assembly

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Q. Are diagnosis codes P0842, P0843, P0847 or P0848 set?

	Carry out the appropriate troubleshooting.

	Go to Step 2

STEP 2. Symptom recheck after erasing diagnosis code

Turn the ignition switch to the "LOCK" (OFF) position, and wait for one minute. Then, drive the vehicle for a while and check again.

Q. Is the diagnosis code set?

	Replace the CVT assembly.

	Intermittent malfunction.