Code No. P071B Malfunction of Ds position switch (stuck ON) <6 position type>
Code No. P071C Malfunction of Ds position switch (stuck OFF) <6 position type>


DIAGNOSTIC FUNCTION


P071B: The CVT-ECU detects that the Ds position switch is stuck to ON.
P071C: The CVT-ECU detects that the Ds position switch is stuck to OFF.

JUDGEMENT CRITERIA


P071B: The Ds position switch remains ON for five seconds when the inhibitor switch is at "P", "R", or "N."
P071C: The Ds position switch remains OFF for five seconds when the inhibitor switch is at "L."

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list
Item 51: Ds position switch
OK: Turns ON when the selector lever is at "Ds" or "L".

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

STEP 2. Ds position switch single unit check
Refer to .

Q. Is the check result normal?
Go to Step 3.
Replace the selector lever assembly.

STEP 3. Check for short to earth in INHS line between the CVT-ECU connector and the Ds position switch connector

Q. Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.

STEP 4. Check for open circuit in earth line between the Ds position switch connector and body earth.

Q. Is the check result normal?
Go to Step 5.
Repair the connector(s) or wiring harness.

STEP 5. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ).
Replace CVT-ECU.