INSPECTION PROCEDURE
C-4: Front and/or Rear Passenger’s Power Window(s) do not work by means of
The Power Window Main Switch.
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 the passenger’s and/or rear power window(s) do not work by means
of the power window main switch, a malfunction of the power window main switch or the power
window sub switch, or ETACS-ECU is suspected.
PROBABLE CAUSES
Malfunction of the power window main switch
Malfunction of the power window sub switch
Malfunction of ETACS-ECU
Damaged wiring harness and connectors
DIAGNOSTIC PROCEDURE
STEP 1. Check the power window main switch.
Check that the driver’s power window works by means of the power window main
switch.
Q.
Is the check result normal?
Go to Step 2.
Refer to inspection procedure C-2 "Driver’s power window does not work
by means of the power window main switch ."
STEP 2. Check the power window sub switch.
Check that each power window works by means of the respective power window sub switch
when the power window lock switch is turned off.
Q.
Is the check result normal?
Go to Step 3.
Refer to inspection procedure C-3 "Relevant power window(s) does not work by means of
the front and rear passenger’s power window sub switches ."
STEP 3. Check the power supply system.
With the ignition switch in the LOCK (OFF) position, check if the following function operates
normally:
Hazard warning lamp
Q.
Is the check result normal?
Go to Step 4.
Refer to GROUP 54A -
Malfunction of ETACS-ECU power supply circuit .
STEP 4. M.U.T.-III diagnosis code
Check that ETACS-ECU sets a diagnosis code.
Q.
Is the diagnosis code set?
Refer to GROUP 54B -
Troubleshooting .
Go to Step 5.
STEP 5. Retest the system.
Check that the front and/or rear passenger’s power windows work by means
of the power window main switch.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunction ).