DIAGNOSIS FUNCTION




  • DIAGNOSIS CODE
  • Data list output
  • Actuator test
  • Diagnosis deletion using M.U.T.-III
  • Freeze frame data
  • Status indication by diagnosis code
  • ECU information display
note If a diagnosis code is set, the "status indication by diagnosis code" informs users whether a mechanical problem currently exists (current trouble) or whether it existed before but normal operation has been restored (past trouble).

HOW TO READ DIAGNOSIS CODE


caution Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position.


Connect the M.U.T.-III to the 16-pin diagnosis connector, and read the diagnosis code.
note
  • For details on how to use the M.U.T.-III, refer to the "M.U.T.-III operation manual."
  • For the vehicles with security alarm sensor, when the M.U.T.-III is connected, if the ignition switch is turned to the "ON" position and the closed hood is opened, the security alarm siren sounds short. This short security alarm siren does not indicate malfunction. Therefore, ignore it and carry out diagnosis using M.U.T.-III.
1.Ensure that the ignition switch is at the "LOCK" (OFF) position.
2.Start up the personal computer.
3.Connect special tool M.U.T.-III USB cable (MB991827) to V.C.I. (MB991824) and the personal computer.
4.Connect M.U.T.-III main harness A (MB991910) to the V.C.I.
5.Connect the M.U.T.-III main harness A to the diagnosis connector of the vehicle.
6.Turn the V.C.I. power switch to the "ON" position.
note When the V.C.I. is energized, the V.C.I. indicator lamp will be illuminated in a green colour.
7.Start the M.U.T.-III system on the personal computer and turn the ignition switch to the "ON" position.
8.Read the diagnosis code.
9.Disconnecting the M.U.T.-III is the reverse of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF) position.

ERASING DIAGNOSIS CODE


caution Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position.
Connect the M.U.T.-III to the diagnosis connector, and erase the diagnosis code. The procedure is the same as "How to Read Diagnosis Code ."