Service Procedures Without Using MUT II

READING AND ERASING DIAGNOSIS CODES

Without MUT-II

Diagnosis Switch:

Current diagnosis code
- Turn ON the starter switch.
- Disconnect the diagnosis switch 1.







- The diagnosis code is indicated by flashing of warning lamp 2 (red) or warning lamp 3 (orange).







Diagnosis code indication
Diagnosis codes are indicated by the numbers and durations of the warning lamp flashes.
- Flashes for units of ten and units of one have different lengths, as follows:

Units of ten: 1.2 seconds
Units of one: 0.4 second

- For each diagnosis code, units of ten are given first, followed by units of one. For a code that has no units of ten, only units of one are given.

- Each diagnosis code is indicated three times. If there are no new codes, the sequence is then repeated from the beginning with each code indicated three times.
- When the diagnosis switch 1 is connected, the control unit immediately stops the indication of codes.

Memory Clear Switch:

Past diagnosis codes
With the diagnosis switch 1 disconnected, disconnect the memory clear switch 4 after reading the current diagnosis code(s). The warning lamp will begin to flash again, this time to indicate any past diagnosis code(s). Verify the fault location in accordance with the code(s).







Diagnosis code eraser
To eraser all stored diagnosis codes from the control unit, disconnect and reconnect the memory clear switch 4.

CAUTION:
- Stored codes are cleared only by disconnection and reconnection of the memory clear switch 4.
- To prevent the memory contents from being cleared after the indication of stored codes, turn OFF the starter switch with the memory clear switch 3 disconnected then connect the memory clear switch.

Diagnosis Codes Table






With MUT-II

Special tools







Connecting the MUT-II







NOTE: Instructions for operation of the MUT-II are given in the separate MUT-II Reference Manual.







Current diagnosis codes
- Turn the starter switch to the ON position.
- Determine the fault location(s) in accordance with the past MUT-II diagnosis code(s).

Past diagnosis codes
- Turn the starter switch to the ON position.
- Determine the fault location(s) in accordance with the past MUT-II diagnosis code(s).

Diagnosis code erasure
- Turn the starter switch to the ON position.
- Using the MUT-II, erase all diagnosis codes stored in the control unit.

Diagnosis codes
Diagnosis codes are indicated as shown in the following table. For details of these codes, refer to the "Without MUT-II" section.