DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when there is an failure in the engine-A/T-ECU and
its related components.PROBABLE CAUSES
- Malfunction of the MPI system.
- Malfunction of the A/T system.
- Malfunction of the engine-A/T-ECU.
DIAGNOSIS PROCEDURE
STEP 3. Check the MUT-II/III diagnosis code No. 23.
Q: Is the MUT-II/III diagnosis code No. 23 set?
YES:
Replace the engine-A/T-ECU (Refer to GROUP 13C, Engine-A/T-ECU 
).
Then go to Step 4
.NO: This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points
).