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DTC P0868: Secondary Pressure Drop


SECONDARY PRESSURE SENSOR SYSTEM CIRCUIT


Refer to .

DIAGNOSTIC FUNCTION


TCM detects the secondary pressure drop during driving.

DESCRIPTIONS OF MONITOR METHODS



MONITOR EXECUTION



MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)


Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
Sensor (The sensor below is determined to be normal)

LOGIC FLOW CHARTS (Monitor Sequence)




DTC SET CONDITIONS


Check Conditions
Judgment Criteria

OBD-II DRIVE CYCLE PATTERN


transmission range: D (Drive the vehicle for 10 seconds or more while the accelerator opening angle is 20% or more)

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE

STEP 1. Check other diagnosis codes.

Q. Are other diagnosis codes set?
Go to the appropriate troubleshooting.
Go to Step 2.

STEP 2. Check the following connector:

  • B-08 CVT assembly connector
  • C-40 TCM connector
  • A-09 Intermediate connector
Check contacts for internal short circuit.

Q. Is the check result normal?
Go to Step 3.
Repair the defective connector.

STEP 3. Check for short to ground in the wiring harness between the TCM connector and the CVT assembly connector.

  • Between C-40 TCM connector (terminal No.39) and B-08 CVT assembly connector (terminal No.7)
OK: 100 Ω or more

Q. Is the check result normal?
Go to Step 4.
Repair the wiring harness.

STEP 4. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction
Replace the TCM, and then go to Step 5.

STEP 5. Retest the system.

Q. Is the check result normal?
The procedure is complete.
Replace the CVT assembly.