INSPECTION PROCEDURE B-5: The Power Window Timer Function does not work Normally. <Using SWS Monitor>

caution

Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

OPERATION

The ETACS-ECU operates this function in accordance with the input signals below.

Ignition switch (IG1)
Driver’s door switch

COMMENTS ON TROUBLE SYMPTOM

If the power window timer function does not work normally, these input signal circuit(s) or the ETACS-ECU may be defective.

POSSIBLE CAUSES

Malfunction of the driver’s door switch
Malfunction of the ETACS-ECU
Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

STEP 1. Check the power window main switch.

Check that all of the front passenger’s and rear door power windows can operate by means of the power window main switch.

Q. Is the check result normal?

Go to Step 2.

Refer to inspection procedure B-1 "Power windows do not work at all

<Not using SWS monitor> or

<Using SWS monitor>."

STEP 2.ECU check by using the SWS monitor

Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal.

Turn the ignition switch from the ON to the OFF position.

ECUS TO BE CHECKED

ETACS ECU

OK: "OK" are displayed for all the items

Q. Is the check result normal?

Go to Step 3.

Refer to GROUP 54C, Inspection Procedure A-3 "Communication with ETACS-ECU is not possible

STEP 3. SWS monitor data list

Check the SWS communication signal, which are related to the power window timer function.
<Selected item> ETACS ECU

Ignition switch: OFF
Driver’s door: Close → Open

Item No.	Item name	Normal condition
Item 30	IG SW(IG1)	OFF
Item 32	DR DOOR SW	from OFF to ON

OK: Normal conditions are displayed for all the items

Q. Are the check result normal?

YES <Normal conditions are displayed for all the items.>

: Go to Step 4.

NO <Normal condition is not displayed for item No.30.> : Refer to GROUP 54A, inspection procedure C-2 "The ignition switch (IG1) signal is not received

."

NO <Normal condition is not displayed for item No.32.> : Refer to GROUP 54A, inspection procedure C-5 "The driver’s door switch signal is not received

<LH drive vehicles> or

<RH drive vehicles>."

STEP 4. Retest the system.

Check that the power window timer function works normally.

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.