Inspection Procedure D-7: The power window timer function does not work normally.


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

COMMENTS ON TROUBLE SYMPTOM
If the power window timer function does not work normally, these input signal circuit(s), the power window main switch or the ETACS-ECU may be defective. Also, the power window timer function may have been disabled with the customization function.

  • Ignition switch (IG1)
  • Driver’s door switch

POSSIBLE CAUSES

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

DIAGNOSTIC PROCEDURE

Step 1. Check the power supply circuit.
When the ignition switch is turned to the LOCK (OFF) position, check if the hazard warning lamps illuminate.

Q. Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure A-2 "When the ignition switch is at the LOCK (OFF) position, the functions do not work normally. Check the battery power supply circuit to the ETACS-ECU ."

Step 2. Pulse check
Check the input signals below, which are related to the power window timer function.
System switch
 Check conditions
Ignition switch (IG1)
 When turned from ACC to ON
Driver’s door switch
 When the driver’s door is opened
Power window main switch
 When turned from off to on
OK: The M.U.T.-III sounds or the voltmeter needle fluctuates.

Q. Are the check result normal?
All the signals are received normally. : Go to Step 3.
The ignition switch (IG1) signal is not received. : Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ."
The driver’s door switch signals is not received. : Refer to Inspection Procedure P-4 "The driver’s door switch signal is not received ."
The power window main switch signal is not received. : Refer to Inspection Procedure P-8 "When the power window main switch is operated, the switch signals are not received ."

Step 3. Customize function by using the SWS monitor.
Use the SWS monitor customize function to confirm that "KEY-OFF TMR T" is set to other than "W/O FUNCTION".
caution The SWS monitor must be used in order to confirm and change that setting. Use the SWS monitor to confirm and/or change the customized function.

Q. Is the check result normal?
Go to Step 4.
Use the SWS monitor customize function to se the "KEY-OFF TMR T" to other than "W/O FUNCTION" (Refer to GROUP 54E - Customize adjustment ).

Step 4. Retest the system.
After the power window main switch is replaced, check that the power window timer function works normally.
(1)Replace the power window main switch.
(2)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 Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.