DIAGNOSIS FUNCTION


The diagnosis function retrieves diagnosis code and data list by M.U.T.-III and enables the performance of the actuator test.

  • 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 <except vehicles with Keyless Operation System (KOS)> or put the power supply mode is OFF <vehicles with Keyless Operation System (KOS)>.


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 Owner’s Manual."
1.Ensure that the ignition switch is at the "LOCK" (OFF) position <except vehicles with KOS> or put the power supply mode is OFF <vehicles with KOS>.
2.Start up the personal computer.
3.Connect special tool V.C.I.-Lite USB cable (MB992747/MB992748) or M.U.T.-III USB cable (MB991827) to V.C.I.-Lite (MB992744) or V.C.I. (MB991824) and the personal computer.
4.Connect V.C.I.-Lite main harness A (MB992745) or M.U.T.-III main harness A (MB991910) to the V.C.I.-Lite or V.C.I.
5.Connect the V.C.I.-Lite main harness A or M.U.T.-III main harness A to the diagnosis connector of the vehicle.
note When the V.C.I.-Lite is connected to the diagnosis connector, the V.C.I.-Lite indicator lamp will be illuminated in a green colour.
6.Turn the V.C.I. power switch to the "ON" position. <When using the V.C.I.>
note When the V.C.I. is energised, 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 <except vehicles with KOS> or put the power supply mode is ON <vehicles with KOS>.
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 <except vehicles with KOS> or put the power supply mode is OFF <vehicles with KOS>.

ERASING DIAGNOSIS CODE
caution Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position <except vehicles with KOS> or put the power supply mode is OFF <vehicles with KOS>.
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."