Code No. P1240: Trustful Check Ignition Angle <Vehicles with ASC>
FUNCTION
Checks for an abnormal ignition timing retard angle demand signal from the active stability control (ASC).
TROUBLE JUDGEMENT
Check Condition
Ignition switch is "ON" position.
Judgement Criteria
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 stored?
Inspection chart for diagnosis code (Refer to
).
Go to Step 2.
STEP 2. M.U.T.-III diagnosis code
Confirm the diagnosis code is stored in the ASC-ECU.
Q. Is diagnosis code stored?
Perform troubleshooting of the active stability control system (ASC) (Refer to GROUP 35C - Troubleshooting - Diagnosis Code Chart
).
Replace the engine-ECU.