INSPECTION PROCEDURE
3: Selector "P" position-linked door unlock function does not operate <CVT>.
caution
Before replacing the ECU,
ensure that the input and output signal circuits are normal.
OPERATION
ETACS-ECU determines whether the shift position is at "P" or not according to the shift
position signal which is sent by CVT-ECU.
COMMENTS ON TROUBLE SYMPTOM
If the doors are not unlocked when the selector lever is shifted to the P position, a
malfunction of the shift position signal input circuit(s) or ETACS-ECU is suspected. Also, the
selector "P" position-linked door unlock function may have been "disabled" with the customisation
function.
PROBABLE CAUSES
Malfunction of CAN bus line
Malfunction of ETACS-ECU
Damaged wiring harness and connectors
DIAGNOSIS PROCEDURE
STEP 1. Checking central door unlocking operation
Check that the central door locking system works normally.
Q.
Is the check result normal?
Go to Step 2.
Refer to Central Door Locking System Symptom Chart .
STEP 2. Check the customisation function.
Check that "Enable" is set for "Door unlock (Shift "P" position)" with the customisation
function.
Q.
Is the check result normal?
Go to Step 3.
Set "Enable" for "Door unlock (Shift "P" position)" with the customisation function (Refer
to Customisation Function ).
STEP 3. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.
Q.
Is the CAN bus normal?
Go to Step 4.
Repair the CAN bus line (Refer to GROUP 54C -
Troubleshooting ).
STEP 4. Check the M.U.T.-III Diagnosis code of other systems
Check that CVT stores a diagnosis code.
Q.
Is the diagnosis code stored?
Diagnose CVT (Refer to GROUP 23A -
Troubleshooting ).
Go to Step 5.
STEP 5. Retest the system.
Check that shifting the selector lever to the P position unlocks the doors.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunction ).