Code No. P1240: Trustful Check Ignition Angle




FUNCTION



  • Checks for an abnormal ignition timing retard angle demand signal from the active stability control (ASC).

TROUBLE JUDGMENT


Check Condition
  • Ignition switch is "ON" position.
Judgment Criterion
  • Ignition timing retard angle demand signal is abnormal.

FAIL-SAFE AND BACKUP FUNCTION



  • Ignition retard is not carried out.

PROBABLE CAUSES



  • Failed active stability control system
  • Failed engine-ECU

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code



  • Reconfirmation of diagnosis code.

Q. Is diagnosis code related to CAN communication set?

Inspection chart for diagnosis code (Refer to ).
Go to Step 2.

STEP 2. M.U.T.-III diagnosis code



  • Confirm whether the diagnosis code is stored in the ASC-ECU.

Q. Is diagnosis code set?

Perform troubleshooting of the active stability control system (ASC) (Refer to GROUP 35C - Troubleshooting - Diagnosis Code Chart ).
Replace the engine-ECU.