P1247
DTC P1247: A/T PlausibilityTECHNICAL DESCRIPTION
Checks for an abnormal signal of transmission control module.
DTC SET CONDITIONS
Check Condition
- Ignition switch is "ON" position.
Judgment Criterion
- A torque demand signal from TCM is not normal.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
- Automatic transaxle system failed.
- ECM failed.
DIAGNOSIS
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: USB Cable
- MB991910: Main Harness A
STEP 1. Using scan tool MB991958, read the diagnostic trouble code (DTC).
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Read the A/T-DTC.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the A/T-DTC set?
YES : Refer to A/T, Automatic Transaxle Diagnosis-Diagnostic Trouble Code Chart.
NO : Go to Step 2.
STEP 2. Using scan tool MB991958, read the diagnostic trouble code (DTC).
1. Turn the ignition switch to the "LOCK" (OFF) position.
2. After the DTC has been deleted, read the DTC again.
3. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P1247 set?
YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to Diagnosis-ID Codes Registration Judgment Table [Vehicles with KOS] or Diagnosis-ID Codes Registration Judgment Table [Vehicles with WCM].
NO : It can be assumed that this malfunction is intermittent. Refer to General (Body and Chassis), How to Use Troubleshooting/Inspection Service Points-How to Cope with Intermittent Malfunctions.