Code No.P1878: Judder


DIAGNOSIS CODE SET CONDITIONS



note This diagnosis code is set when the trouble judgment condition is satisfied consecutively for 20 drive cycles.

PROBABLE CAUSES



  • Immixing of A/T fluid other than the specified one
  • Malfunction of torque converter
  • Malfunction of the A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code
Check if other A/T diagnosis codes are set.(Refer to .)

Q. Is the diagnosis code set?
YES : Carry out the appropriate troubleshooting.
Go to Step 2.

STEP 2. Replace the A/T fluid and then recheck the diagnosis code.
(1)Replace the A/T fluid.
(2)Test drive the vehicle.
(3)Check the diagnosis code.

Q. Is the diagnosis code set?
Go to Step 3.
The inspection is complete.

STEP 3. Replace the torque converter and then recheck the diagnosis code.
(1)Replace the torque converter.
(2)Test drive the vehicle.
(3)Check the diagnosis code.

Q. Is the diagnosis code set?
Replace the A/T-ECU.
The inspection is complete.