2018 / ECLIPSE CROSS / EC - Workshop Manual
13 -FUEL > 13A-DIRECT INJECTION AND MULTIPOINT FUEL INJECTION (DI AND MPI) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > CODE NO. P1231 TRUSTFUL CHECK ACTIVE STABILITY CONTROL (ASC)
Code No. P1231: Trustful Check Active Stability Control (ASC)
 
 
 
 
FUNCTION
  • Checks for an abnormal signal of active stability control (ASC) via the CAN communication.
 
 
TROUBLE JUDGEMENT
Check Condition
  • Ignition switch is "ON" position.
Judgement Criterion
  • A torque demand signal from the active stability control (ASC) is abnormal.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Torque requested by active stability control (ASC) is ignored.
 
 
PROBABLE CAUSES
  • Failed active stability control system
  • Failed engine-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE diagnosis code
  • Reconfirmation of diagnosis code.
Is the diagnosis code set?
Go to Step 2.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
 
STEP 2. M.U.T.-IIISE other system diagnosis code
  • Confirm whether the diagnosis code is set in the ASC-ECU.
Is the diagnosis code set?
Perform troubleshooting of the active stability control system (ASC) (Refer to GROUP 35C - Troubleshooting - Diagnosis Code Chart ).
Replace the engine-ECU.