Code No. P0815: Paddle Shift Switch (Up) System










DIAGNOSIS CODE SET CONDITIONS



PROBABLE CAUSES
  • Malfunction of the Paddle shift switch (up) system circuit
  • Damaged harness or connector
  • Malfunction of the A/T-ECU
  • Malfunction of the paddle shift switch

DIAGNOSIS PROCEDURE

STEP 1. Check the A/T-ECU terminal voltage.
[C-138 A/T-ECU connector (vehicle side, connected)]
Measure the voltage between C-138 No. 9 and body earth.

  • Ignition switch: ON

  • Paddle (ON) operated: 1V or less

  • Other than above: system voltage

Q. Is the check result normal?
Go to Step 2.
Go to Step 3.

STEP 2. Check the A/T-ECU connector, vehicle-side wiring harness connector pin terminal, and the connection status.

Q. Is the check result normal?
Go to Step 6.
Repair or replace the failure section.

STEP 3. Check between the A/T-ECU connector and the paddle shift switch (up).
Check for continuity between C-138 A/T-ECU connector terminal No. 9 and C-208 paddle shift switch (up).

  • Between C-138 terminal No. 9 and C-208 terminal No. 1: Continuity exists.
When the continuity check result is OK, check that the wiring harness is not shorted to the body and other wiring harness.

Q. Is the check result normal?
Go to Step 4.
Repair or replace the failure section.

STEP 4. Check the paddle shift switch (up).
Refer to .

Q. Is the check result normal?
Go to Step 5.
Repair or replace the failure section.

STEP 5. Check the A/T-ECU connector, vehicle-side wiring harness connector pin terminal, and the connection status.

Q. Is the check result normal?
Replace the A/T-ECU.
Repair or replace the failure section.

STEP 6. Erase the diagnosis code, and drive the vehicle for a while.
Check that the normal code is displayed.

Q. Is the check result normal?
The procedure is complete.
Return to START.