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DTC P0815 Malfunction of Paddle Shift UP Switch <Vehicles with paddle shift>
 
 
 
 
DIAGNOSTIC FUNCTION
TCM detects that the paddle shift UP switch is stuck to ON.
 
 
JUDGMENT CRITERIA
When the paddle shift UP switch being ON consecutively for 60 seconds is detected.
 
 
PROBABLE CAUSES
  • Malfunction of paddle shift switch
  • Damaged wiring harness and connectors
  • Malfunction of TCM
 
 
DIAGNOSIS
Required Special Tools
  • MB992006: Extra fine probe
STEP 1. Scan tool (M.U.T.-IIISE) data list.
Item 67: Paddle switch (Up)
OK: The service data changes in response to the paddle shift operation.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ).
Go to Step 2.
 
STEP 2. Paddle shift switch single unit check.
Refer to .
Is the check result normal?
Go to Step 3.
Replace the paddle shift switch. (Refer to )
 
STEP 3. Check for short to ground in PDUP line between the TCM connector and the paddle shift switch connector.
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.
 
STEP 4. Symptom recheck after erasing diagnostic trouble code.
Is the diagnostic trouble code set?
Replace TCM.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ).