Code No. P1240: Trustful Check Ignition Angle
FUNCTION
Checks for an abnormal ignition timing retard angle demand signal from the ASTC-ECU.
TROUBLE JUDGEMENT
Check Condition
Ignition switch is "ON" position.
Judgement Criterion
The ignition timing retard angle demand signal is not normal.
FAIL-SAFE AND BACKUP FUNCTION
Ignition retard is not carried out.
PROBABLE CAUSES
Failed ASTC-ECU
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 set in the ASTC-ECU.
Q. Is diagnosis code set?
Perform troubleshooting of the active stability traction control system (ASTC) (Refer to GROUP 35C - Troubleshooting - Diagnosis Code Chart
).
Replace the engine-ECU.