Inspection Procedure 6: The front door switch (passenger’s side) signal is not received.


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM


If there is an error to the front door switch (passenger’s side) input signal, the front door switch (passenger’s side) signal is no longer output to the communication line.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check the installation condition.


Check that the front door switch (passenger’s side) is installed to the body correctly.

Q. Is the check result normal?

Go to Step 2.

Correct the installation condition.

STEP 2. Front door switch (passenger’s side) check


Refer to GROUP 42A - Door .

Q. Is the check result normal?

Go to Step 3.

Replace the front door switch (passenger’s side) (Refer to GROUP 42A - Door Assembly ).

STEP 3. Check of short to power supply, short to earth, and open circuit in ADSW line between ETACS-ECU connector and front door switch (passenger’s side) connector


Q. Is the check result normal?

Go to Step 4.

Repair the connector(s) or wiring harness.

STEP 4. M.U.T.-III data list



Item No.
 Item name
 Normal condition
48
 Passenger’s door switch
 ON
OK: Normal condition is displayed.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

Replace the ETACS-ECU (Refer to ).