Power Window Control System - Diagnostics: Pre-Check

POWER WINDOW OPERATION MODE

HINT:

Initial condition that the customizing function by the hand-held tester is not chosen is shown.

Standard:

POWER WINDOW OPERATION

Power window operation	Ignition switch ON	Ignition switch OFF Operative after key-OFF	Ignition switch OFF Inoperative after key-OFF
Manual UP	Jam protection function operative	Inoperative	Inoperative
Manual DOWN	Operative	Inoperative	Inoperative
AUTO UP	Jam protection function operative	Inoperative	Inoperative
AUTO DOWN	Operative	Inoperative	Inoperative
UP interlocked with key operation	Inoperative	Inoperative	Inoperative
DOWN interlocked with key operation	Inoperative	Operative	Operative
UP interlocked with wireless operation	Inoperative	Inoperative	Inoperative
DOWN interlocked with wireless operation	Inoperative	Operative	Operative

POWER WINDOW FAIL-SAFE FUNCTION

When an abnormality is detected in the limit switch and pulse sensor for operating the jam protection function (DTC: B1231, B1232, B1233, B1234), the following power window operations will be prohibited for fail-safe.

Standard:

POWER WINDOW OPERATION

Power window operation	Ignition switch ON	Ignition switch OFF Operative after key-OFF	Ignition switch OFF Inoperative after key-OFF
Manual UP	Operative (AUTO UP held)	Operation prohibited	-
Manual DOWN	Operative	Operation prohibited	-
AUTO UP	Operation prohibited	Operation prohibited	-
AUTO DOWN	Operation prohibited	Operation prohibited	-
UP interlocked with key operation	-	Operation prohibited	Operation prohibited
DOWN interlocked with key operation	-	Operation prohibited	Operation prohibited
UP interlocked with wireless operation	-	Operation prohibited	Operation prohibited
DOWN interlocked with wireless operation	-	Operation prohibited	Operation prohibited

HINT:

In case of normal limit switch, prohibition (fail-safe function) will be cancelled by fully opening the door glass of fully closed by manual operation, then AUTO operation will be possible.

USING HAND-HELD TESTER
1. Hook up the hand-held tester to the DLC3.
2. Monitor the ECU data by following the prompts on the tester screen.
HINT:

Hand-held tester has a "Snapshot" function which records the monitored data.

Refer to the hand-held tester operator's manual for further details.
DTC CLEAR
1. The DTC and freeze frame data will be erased by either action.
  Operate the OBD II scan tool (complying with SAE J1978) or hand-held tester to erase the codes. (See the OBD II scan tool's instruction book for operating instructions.)

DATA LIST

HINT:

According to the DATA LIST displayed by the OBD II scan tool or hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one of the method to shorten the labor time.

Connect the OBD II scan tool or hand-held tester to the DLC3.
Turn the ignition switch ON.
According to the display on tester, read the " DATA LIST".

Standard [Driver side J/B (body ECU) (Data list of switch signal by DTC check)]:

Fig 1: Power Window Diagnosis Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

DTC No. B1221 and B1223 are the codes to inform of each switch condition and will be output when the switch is ON. In that these codes are displayed operating the switch or the switch or the codes are not displayed even with operating the switch, there may be trouble in the switch circuit.

Standard [Power window regulator master switch (driver's door ECU)]:

Fig 2: Power Window Diagnosis Standard Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard [Power window regulator switch (passenger's door ECU)]:

Fig 3: Power Window Diagnosis Standard Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

"1" With the jam protection limit switch ON, the function of the jam protection will stop. If the switch does not come ON at the position where the windows are almost fully open, the windows will not fully close as the jam protection operates at the upper potion during the automatic UP performance.

Standard [Power window regulator master switch (driver's door ECU)]:

Standard [Power window regulator switch (passenger's door ECU]:

HINT:

The next data list is possible when the power window operated with "Manual UP" during the Active Test.

POWER WINDOW DIAGNOSIS STANDARD

Item	Measurement Item/Display (Range)	Normal condition	Diagnostic Note
GRASS POS-1/4	To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test)	OK: No caught in the range between fully open and 1/4 open	"2"
GRASS POS-2/4	To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test)	OK: No caught in the range between fully 1/4 open and 2/4 open	"2"
GRASS POS-3/4	To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test)	OK: No caught in the range between fully 2/4 open and 3/4 open	"2"
GRASS POS-OPEN	To monitor the detection of a caught of the P/W / OK or CAUTION (Displayed during the active test)	OK: No caught in the range between fully 3/4 open and open	"2"

HINT:

"2" In case that the CAUTION is displayed even without applying resistance in each range, there must be a caught somewhere in that range.

ACTIVE TEST

Connect the OBD II scan tool or hand-held tester to the DLC3.
Turn the ignition switch ON.
According to the display on tester, perform the "ACTIVE TEST".

Standard [Power window regulator master switch (driver's door ECU)]:

Standard [Power window regulator switch (passenger's door ECU]:

POWER WINDOW DIAGNOSIS STANDARD

Item	Test Details	Diagnostic Note
P/W UP/DOWN	Drive the P/W Motor UP/DOWN	During this ACTIVE TEST, jam protection caught detection can be monitored. (Refer to the DATA LIST for details)

Standard [Driver side J/B (body ECU) (Rear LH door/Rear RH door)]:

POWER WINDOW DIAGNOSIS STANDARD

Item	Test Details	Diagnostic Note
RL P/W	Drive the RL P/W Motor UP/DOWN	-
RR P/W	Drive the RR P/W Motor UP/DOWN	-