INSPECTION PROCEDURE P-12: All the door switch signals are not received.


caution Whenever the ECU is replaced, ensure that the input signal circuit is normal.


COMMENTS ON TROUBLE SYMPTOM
Input signals from all the door switches are used to operate the functions below. If the signal(s) are abnormal, these functions will not work normally.

  • Door-ajar warning buzzer
  • Keyless entry system
  • Interior lamps
  • Interior lamp automatic-shutdown
  • Door-ajar warning lamp

POSSIBLE CAUSES

  • Malfunction of the door switches
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. SWS monitor data list
<Selected item> ETACS ECU
  • Driver’s door is open
Item No.
 Item name
 Normal condition
Item 32
 DR DOOR SW
 ON
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 2.
Refer to inspection procedure P-4 "The driver’s door switch signal is not received ."

Step 2. Connector check: D-17 (front: LH), D-08 (rear: RH) or D-13 (rear: LH) door switch connectors or G-18 <tailgate> tailgate switch connector, and C-219, C-220 and C-221 ETACS-ECU connector



Q. Is the check result normal?

Go to Step 3.

Repair the defective connector.

Step 3. Check the installation condition.
Check that the door switch is installed on the body correctly.

Q. Is the check result normal?
Go to Step 4.
Correct the installation condition.

Step 4. Check the door switch.
Refer to GROUP 42 - Door .

Q. Is the check result normal?
Go to Step 5.
Replace the door switch.

Step 5. Check the wiring harness from terminal No.1 of the D-17 (front: LH), D-08 (rear: RH) or D-13 (rear: LH) door switch connector or terminal No.1 of the G-18 tailgate switch connector to terminal No.65 (front: LH), No.70 (rear: RH), No.7 (rear: LH) or No.37 (tailgate) of the C-219, C-220 and C-221 ETACS-ECU connector.






note Prior to the wiring harness inspection, check intermediate connector C-16 (front: LH, rear: RH and tailgate) or G-14 <tailgate> and junction block connector C-210 (rear: LH) and repair if necessary.

  • Check the input line for open circuit.

Q. Is the check result normal?

Go to Step 6.

Repair the wiring harness between each of the door switches and the ETACS-ECU.

Step 6. ETACS switch data by using the SWS monitor
Check the input signals from the door switches.

  • Doors other than the driver’s door: Closed to open
Item No.
 Item name
 Normal condition
Item 05
 PASS DOORSW
 from OFF to ON
Item 41
 R.DOOR (RH) SW
 from OFF to ON
Item 42
 R.DOOR (LH) SW
 from OFF to ON
OK: Normal conditions are displayed for all the items.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.