Code No. P0816 Paddle Shift Down Switch System
OPERATION
The paddle shift switch sends downshift signal to the A/T-ECU.
DIAGNOSTIC FUNCTION
A/T-ECU 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 A/T-ECU
|
STEP 1. Measure the resistance at AT-ECU connector.
|
|
(1)Disconnect the connector, and measure the resistance between terminal PDDW and body earth at the wiring harness side.
|
|
(2)Paddle shift switch: no operation OK: No continuity
|
|
(3)Paddle shift switch: DOWN OK: 2 Ω or less
|
|
Q.
Is the check result normal?
|
|
Go to Step 4.
|
|
|
|
Go to Step 2.
|
|
|
|
STEP 2. Paddle shift switch check
|
|
Refer to .
|
|
Q.
Is the check result normal?
|
|
Go to Step 3.
|
|
|
|
Replace the paddle shift switch.
|
|
|
|
STEP 3. Check for short to earth in PDDW line between the A/T-ECU connector and the paddle shift switch connector
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
|
|
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
STEP 4. Check whether the diagnosis code is set again.
|
|
- Ignition switch: "LOCK"(OFF) → "ON"
- Check again if the diagnosis code is set.
|
|
Q.
Is diagnosis code No.P0816 set?
|
|
Replace the A/T-ECU.
|
|
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
|
|
|