P0816

DTC P0816: Malfunction of Paddle Shift Down Switch





DIAGNOSTIC FUNCTION
TCM detects that the paddle shift DOWN switch is stuck to ON.

JUDGEMENT CRITERIA
When the paddle shift DOWN switch being ON consecutively for 60 seconds is detected.

PROBABLE CAUSES
^ Malfunction of paddle shift switch
^ Damaged wiring harness and connectors
^ Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III data list
Item 55: Paddle switch (down)
OK: The service data changes in response to the paddle shift operation.

Q: Is the check result normal?
YES: Intermittent malfunction
NO: Go to Step 2.

STEP 2. Check the following connector:
^ C-41 TCM connector
^ C-21 0 paddle shift switch connector
Check the terminals for a contact status problem and internal short circuit.

Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the damaged connector.

STEP 3. Paddle shift switch single unit check

Q: Is the check result normal?
YES: Go to Step 4.
NO: Replace the paddle shift switch.

STEP 4. Check for short to ground in the wiring harness between the TCM connector and the paddle shift switch connector
Between C-41 TCM connector (terminal No.21) and C-210 paddle shift switch connector (terminal No.3)

Q: Is the check result normal?
YES: Go to Step 5.
NO: Repair the wiring harness.

STEP 5. Symptom recheck after erasing diagnosis code

Q: Is the check result normal?
YES: Intermittent malfunction
NO: Replace TCM.