Lexus RX300 (MCU15). Manual — part 353
DI2FA–06
I19164
Power Window Motor
D Jam Protection Limit Switch
D Jam Protection Pulse Switch
Power Window Switch
Rear Left Door ECU
Door Lock Assembly
D Door Courtesy Switch
D Door Unlock Detection Switch
D Door Lock Motor
DI–644
–
DIAGNOSTICS
REAR LEFT DOOR CONTROL SYSTEM
LEXUS RX300 (RM785E)
PARTS LOCATION
DI2FH–08
I03226
R15
R14
REAR LEFT DOOR ECU
3
2
1
5
4
8
7
6
10
13
12
11
9
5
4
3
2
1
8
7
6
18
17
16
15
14
19
25
24
23
22
21
20
–
DIAGNOSTICS
REAR LEFT DOOR CONTROL SYSTEM
DI–645
LEXUS RX300 (RM785E)
TERMINALS OF ECU
Symbols (Terminals No.)
Wiring Color
Condition
STD Voltage (V)
A– ↔ GND
L B ↔ W B
Door lock switch OFF or LOCK
Below 1.0
A ↔ GND
(R14–1 ↔ R14–25)
L–B ↔ W–B
Door lock switch UNLOCK
10 – 14
CTY ↔ GND
R W ↔ W B
Rear LH door closed
10 – 14
CTY ↔ GND
(R14–8 ↔ R14–25)
R–W ↔ W–B
Rear LH door open
Below 1.0
SIG ↔ GND
(R14–9 ↔ R14–25)
R–L ↔ W–B
Constant
10 – 14
PCTO ↔ GND
L O ↔ W B
Window lock switch UNLOCK*
10 – 14
PCTO ↔ GND
(R14–10 ↔ R14–25)
L–O ↔ W–B
Window lock switch LOCK*
Below 1.0
PCTI ↔ GND
Y B ↔ W B
Window lock switch UNLOCK*
10 – 14
PCTI ↔ GND
(R14–11 ↔ R14–25)
Y–B ↔ W–B
Window lock switch LOCK*
Below 1.0
A+ ↔ GND
L R ↔ W B
Door lock switch OFF or UNLOCK
Below 1.0
A+ ↔ GND
(R14–13 ↔ R14–25)
L–R ↔ W–B
Door lock switch LOCK
10 – 14
BDR ↔ GND
(R14–14 ↔ R14–25)
L–Y ↔ W–B
Constant
10 – 14
CPUB ↔ GND
(R14–15 ↔ R14–25)
G–B ↔ W–B
Constant
10 – 14
LSW ↔ GND
GR ↔ W B
Rear LH door is locked
10 – 14
LSW ↔ GND
(R14–17 ↔ R14–25)
GR ↔ W–B
Rear LH door is unlocked
Below 1.0
AUTO ↔ GND
lgnition switch ON and power window switch OFF, UP or DOWN
Below 1.0
AUTO ↔ GND
(R14–22 ↔ R14–25)
Y ↔ W–B
lgnition switch ON and power window switch AUTO UP or
DOWN
10 – 14
MDN ↔ GND
Y R ↔ W B
lgnition switch ON and power window switch OFF or UP
Below 1.0
MDN ↔ GND
(R14–23 ↔ R14–25)
Y–R ↔ W–B
lgnition switch ON and power window switch DOWN
10 – 14
MUP ↔ GND
Y G ↔ W B
lgnition switch ON and power window switch OFF or DOWN
Below 1.0
MUP ↔ GND
(R14–24 ↔ R14–25)
Y–G ↔ W–B
lgnition switch ON and power window switch UP
10 – 14
DN ↔ GND
G ↔ W B
lgnition switch ON and power window switch OFF or UP
Below 1.0
DN ↔ GND
(R15–1 ↔ R14–25)
G ↔ W–B
lgnition switch ON and power window switch DOWN
10 – 14
LMT ↔ GND
Y ↔ W B
Window fully – close position
10 – 14
LMT ↔ GND
(R15–2 ↔ R14–25)
Y ↔ W–B
Window except fully – close position
Below 1.0
DI–646
–
DIAGNOSTICS
REAR LEFT DOOR CONTROL SYSTEM
LEXUS RX300 (RM785E)
UP ↔ GND
R ↔ W B
lgnition switch ON and power window switch OFF or DOWN
Below 1.0
UP ↔ GND
(R15–3 ↔ R14–25)
R ↔ W–B
lgnition switch ON and power window switch UP
10 – 14
During power window is operate.
Pulse generation
PLS ↔ GND
(R15 7 ↔ R14 25)
L ↔ W–B
Power window is not operate with switch ON
Below 1.0
(R15–7 ↔ R14–25)
Power window is not operate with switch OFF
10 – 14
*: Power window master switch
DI2FI–01
–
DIAGNOSTICS
REAR LEFT DOOR CONTROL SYSTEM
DI–647
LEXUS RX300 (RM785E)
PROBLEM SYMPTOMS TABLE
POWER WINDOW CONTROL SYSTEM
Symptom
Suspect Area
See page
Power window does not operate.
1. Power window switch circuit
2. Power window motor circuit
3. Rear left door ECU
DI–657
BE–84
Auto up (or down) function does not operate.
1. Power window switch circuit
2. Rear left door ECU
DI–657
Jam protection function and auto up (or down) function does not
operate.
1. Jam protection limit switch circuit
2. Jam protection pulse switch circuit
3. Rear left door ECU
BE–84
BE–84
OTHERS
Symptom
Suspect Area
See page
Parts of the door does not function.
1. Power source circuit
2. Rear left door ECU.
DI–648
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