INSPECTION PROCEDURE
P-7: The column switch (windshield wiper washer and rear wiper washer switch)
signal is not
received.
|
caution |
Whenever the ECU is replaced,
ensure that the input signal circuit is normal.
|
|
|
COMMENTS ON TROUBLE SYMPTOM
|
|
Input signal from the column switch (wiper
switch) is used to operate the functions below.
If the signal is abnormal, these functions will not work normally.
|
|
- Windshield wiper and washer
- Rear wiper and washer
|
|
- Malfunction of the column switch
- Damaged harness wires and connectors
|
|
Step 1. Check the vehicle model for which no column switch
(windshield wiper washer and rear wiper washer switch) signal is received.
|
|
Q.
Which vehicle model does not send any column switch (windshield wiper
washer and rear
wiper washer switch) signal, LHD or RHD?
|
|
<LH drive vehicles> : Go to Step
2.
|
|
|
|
<RH drive vehicles> : Go to Step
4.
|
|
|
|
Step 2. Use the M.U.T.-III to confirm a diagnosis code.
|
|
Check that the ETACS-ECU sets a diagnosis
code.
|
|
Q.
Is the diagnosis code set?
|
|
Refer
to diagnosis code chart .
|
|
|
|
Go to Step 3.
|
|
|
|
Step 3. Retest the system.
|
|
Replace the column switch, and check if the
column switch (windshield wiper washer and
rear wiper washer switch) sends signal.
|
|
(1)Replace the column switch.
|
|
(2)Check if the column switch (windshield wiper/washer
and rear wiper washer
switch) sends signal.
|
|
Q.
Is the check result normal?
|
|
The
procedure is complete.
|
|
|
|
Replace the ETACS-ECU.
|
|
|
|
Step 4. Check the column switch connector.
|
|
Check that the wiper and washer switch
connector, the lighting switch connector and the
switch body connector are in good condition.
|
|
Q.
Is the check result normal?
|
|
Go to Step 5.
|
|
|
|
Repair
the defective connector.
|
|
|
|
Step 5. Check the column switch (wiper switch and switch
body).
|
|
Refer to GROUP 54A - Column switch .
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Replace the column switch.
|
|
|
|
Step 6. M.U.T.-III diagnosis code
|
|
Check that the ETACS-ECU sets a diagnosis
code.
|
|
Q.
Is the diagnosis code set?
|
|
Refer
to diagnosis code chart .
|
|
|
|
Go to Step 7.
|
|
|
|
Step 7. Retest the system.
|
|
Replace the column switch, and check if the
column switch (windshield wiper/washer
and rear wiper washer switch) sends signal.
|
|
(1)Replace the column switch.
|
|
(2)Check if the column switch (windshield wiper/washer
and rear wiper washer
switch) sends signal.
|
|
Q.
Is the check result normal?
|
|
The
procedure is complete.
|
|
|
|
Replace the ETACS-ECU.
|
|
|