Lexus RX300 (MCU15). Manual — part 137

BE0HG–22

–

BODY ELECTRICAL

POWER WINDOW CONTROL SYSTEM

BE–95

LEXUS RX300 (RM785E)

ADJUSTMENT

HOW TO RESET POWER WINDOW MOTOR (RESET LIMIT SWITCH AND PULSE SWITCH)
If the jam protection is not functioned properly, perform the following procedure.
HINT:
If is necessary to reset the power window motor (in initial position for the limit switch) when separating the
window regulator from the power window motor or operating the window regulator with the door glass not
installed.
(a)

Remove the power window motor. (See page BO–15, BO–24)

HINT:
Place the matchmarks on the power window motor and window regulator gear.
(b)

Connect the power window motor an power window switch to wire harness of the vehicle.

(c)

Turn the ignition switch ON and operate the power window switch to idle the power window motor in
UP side direction for more than 6 rotations or less than 10 rotates (4 seconds or more).

(d)

Assemble the power window motor and regulator.

HINT:

S

Install the motor when the regulator arm is below the middle point.

S

Align the matchmarks on the power window motor and window regulator gear when install the power
window motor.

(e)

Assemble the power window regulator and door glass.

HINT:
Never rotate the motor to the down direction until the completion of the window glass installation.
(f)

Connect power window switch to wire harness and turn the ignition switch ON.

(g)

Repeat UP and DOWN operation several times manually.

(h)

Check if AUTO UP → AUTO DOWN operates in automatic operation.

HINT:

S

Take care that the jam protection function does not operate just after resetting.

S

Reset the regulator again when performing the reverse operating after closing the window fully by
AUTO UP operation.

(i)

Check the power window function.

BE0HQ–13

I19167

Door Lock Assembly
D Door Lock Motor
D Door Unlock Detection Switch
D Door Key Lock and Unlock Switch

Body ECU

Ignition Switch

Key Unlock Warning Switch

Power Window Master Switch
D Door Lock Control Switch

Rear LH Door ECU

Door Lock Control Switch

Rear RH Door ECU

Back Door Key Lock
and Unlock Switch

Back Door Lock Motor

Back Door Unlock Detection Switch

Door Lock Assembly
D Door Lock Motor
D Door Unlock

LHD:

RHD:

Ignition Switch

Key Unlock Warning Switch

Body ECU

BE–96

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BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

LEXUS RX300 (RM785E)

POWER DOOR LOCK CONTROL SYSTEM

LOCATION

BE1YJ–01

I19144

UNLOCK

LOCK

I07296

UNLOCK

LOCK

I19145

UNLOCK

LOCK

Door Lock Cable

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BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

BE–97

LEXUS RX300 (RM785E)

INSPECTION

1.

INSPECT DRIVER’S DOOR KEY LOCK AND UNLOCK
SWITCH CONTINUITY

LHD:

Switch position

Tester connection

Specified condition

LOCK

2 – 8

Continuity

OFF

–

No continuity

UNLOCK

1 – 8

Continuity

RHD:

Switch position

Tester connection

Specified condition

LOCK

3 – 6

Continuity

OFF

–

No continuity

UNLOCK

4 – 6

Continuity

If continuity is not as specified, replace the switch.
2.

INSPECT DRIVER’S DOOR KEY LOCK AND UNLOCK
SWITCH CIRCUIT (See page DI–610)

3.

INSPECT BACK DOOR KEY LOCK AND UNLOCK
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

LOCK

1 – 2

Continuity

OFF

–

No continuity

UNLOCK

1 – 3

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
4.

INSPECT BACK DOOR KEY LOCK AND UNLOCK
SWITCH CIRCUIT (See page DI–592)

5.

INSPECT FRONT DOOR UNLOCK DETECTION
SWITCH CONTINUITY

Driver’s door (LHD)/Passenger’s door (RHD):

Switch position

Tester connection

Specified condition

OFF (Door Lock set to

LOCK)

–

No continuity

ON (Door Lock set to

UNLOCK)

7 – 8

Continuity

I19146

UNLOCK

LOCK

Door Lock Cable

I07311

UNLOCK

BE–98

–

BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

LEXUS RX300 (RM785E)

Passenger ’s door (LHD)/Driver’s door (LHD):

Switch position

Tester connection

Specified condition

OFF (Door Lock set to

LOCK)

–

No continuity

ON (Door Lock set to

UNLOCK)

6 – 7

Continuity

If continuity is not as specified, replace the door lock assembly.
6.

INSPECT FRONT DOOR UNLOCK DETECTION
SWITCH CIRCUIT (See page DI–608)

7.

INSPECT REAR DOOR UNLOCK DETECTION
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF (Door Lock set to

LOCK)

–

No continuity

ON (Door Lock set to

UNLOCK)

3 – 4

Continuity

If continuity is not as specified, replace the door lock assembly.
8.

INSPECT REAR DOOR UNLOCK DETECTION
SWITCH CIRCUIT (See page DI–653)

9.

INSPECT BACK DOOR UNLOCK DETECTION
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF (Door Lock set to

LOCK)

–

No continuity

ON (Door Lock set to

UNLOCK)

1 – 4

Continuity

If continuity is not as specified, replace the door lock assembly.