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.

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."

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.Remove the instrument lower panel.
6.Connect the M.U.T.-III main harness A to the diagnosis connector of the vehicle.
7.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.

8.Start the M.U.T.-III system on the personal computer and turn the ignition switch to the "ON" position.
9.Read the diagnosis code.
10.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