Code No. P0705: Malfunction of Inhibitor Switch


DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA



  • CVT-ECU does not detects the inhibitor switch input signal for 5 seconds when the vehicle speed is 1 km/h or more for 10 seconds continuously.
  • CVT-ECU detects the multiple inputs from the inhibitor switch for 2 seconds.

PROBABLE CAUSES



  • Malfunction of the inhibitor switch
  • Improper adjustment of transmission control cable
  • Damaged wiring harness and connectors
  • Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III data list
Item 49: Inhibitor SW
Check that the service data changes when the selector lever is moved to all ranges.
OK: The service data changes in response to the selector lever operation.

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

STEP 2. Check for open circuit in BLP+ line between the ETACS-ECU connector and the inhibitor switch connector

Q. Is the check result normal?
Go to Step 3.
Repair the connector(s) or wiring harness.

STEP 3. Check for open circuit in INHP, INHR, INHN, INHD, INHL line between the inhibitor switch connector and the CVT-ECU connector

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

STEP 4. Inhibitor switch and control cable adjustment
Refer to .

Q. Is the check result normal?
Go to Step 5.
Adjust the inhibitor switch and control cable.

STEP 5. Inhibitor switch continuity check
Refer to .

Q. Is the check result normal?
Go to Step 6.
Replace the inhibitor switch.

STEP 6. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction
Replace CVT-ECU.