INSPECTION PROCEDURE D-6: The power window timer function does not work normally. <Except vehicles for Australia and New Zealand>


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 D-1 "Power windows do not work at all ."

Step 2. 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 3.
Refer to inspection procedure A-2 "Check the ETACS-ECU battery power supply circuit ."

Step 3. 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
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 4.
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 are not received. : Refer to inspection procedure P-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 Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.