terecu40.pdf

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05–1680
DIAGNOSTICS
–
LIGHTING SYSTEM
05HJ5–01
TERMINALS OF ECU
1.
INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU)
Instrument Panel Junction Block
Front Side View:
1G
1E
1D
1I
1O
1J
1A
1B
Rear Side View:
B7
B5
B6
1K
1N
1M
I39971
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1844
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05–1681
DIAGNOSTICS
–
LIGHTING SYSTEM
Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
Front RH side marker lamp comes
on
Front RH side marker lamp goes off
Taillamp signal (To front
side marker)
10 to 14 V
Below 1 V
Tail (1A–15) – GND (1E–17)
BR – W–B
Power source (From bat-
tery)
ECUB (1A–30) – GND (1E–17)
R – W–B
Always
10 to 14 V
Front LH side marker lamp comes
on
Front LH side marker lamp goes off
Taillamp signal (To front
side marker)
10 to 14 V
Below 1 V
Tail (1A–33) – GND (1E–17)
BR – W–B
Rear LH door courtesy
switch signal
Rear LH door is opened
Rear LH door is closed
Below 1 V
10 to 14 V
RCTY (1D–5) – GND (1E–17)
R – W–B
Luggage room courtesy
switch signal
Luggage room door is opened
Luggage room door is closed
Below 1 V
10 to 14 V
BCTY (1D–7) – GND (1E–17)
R – W–B
License plate lamp and rear RH
combination lamp come on
License plate lamp and rear RH
combination lamp go off
Taillamp signal (To license
plate light and rear com-
bination light)
10 to 14 V
Below 1 V
Tail (1D–10) – GND (1E–17)
BR – W–B
Rear RH door courtesy
switch signal
Rear LH door is opened
Rear LH door is closed
Below 1 V
10 to 14 V
RCTY(1D–20) – GND (1E–17)
R – W–B
Front LH door courtesy
switch signal
Front LH door is opened
Front LH door is closed
Below 1 V
10 to 14 V
DCTY (1D–21) – GND (1E–17)
V – W–B
Front RH door courtesy
switch signal
Front RH door is opened
Front RH door is closed
Below 1 V
10 to 14 V
PCTY (1D–24) – GND (1E–17)
BR – W–B
Rear LH combination lamp comes
on
Rear LH combination lamp goes off
Taillamp signal (To rear
combination light)
10 to 14 V
Below 1 V
Tail (1D–29) – GND (1E–17)
BR – W–B
Light control switch is in TAIL or
HEAD
Light control switch is OFF
Taillamp signal (To each
illumination)
10 to 14 V
Below 1 V
Tail (1E–10) – GND (1E–17)
BR – W–B
GND (1E–17) – Body ground
(Body ground)
W–B – Body
ground
Ground
Always
Below 1 V
Key slot lamp comes on
Key slot lamp goes off
Below 1 V
10 to 14 V
ILL (1E–27) – GND (1E–17)
B – W–B
Illumination signal circuit
Multiplex communication
signal circuit
MPX1 (1G–9) – GND (1E–17)
GR – W–B
Power switch ON (IG)
Signal waveform
Headlamp dimmer switch in HIGH
Headlamp dimmer switch not in
HIGH
Headlamp dimmer switch
signal
Below 1 V
10 to 14 V
HU (1I–4) – GND (1E–17)
P – W–B
Light control switch is in TAIL or
HEAD
Light control switch is OFF
Taillamp signal (To each
illumination)
10 to 14 V
Below 1 V
Tail (1N–7) – GND (1E–17)
GR – W–B
Light control switch is in TAIL or
HEAD
Light control switch is OFF
Taillamp signal (To each
illumination)
10 to 14 V
Below 1 V
Tail (1N–9) – GND (1E–17)
G – W–B
Light control switch is in TAIL or
HEAD
Light control switch is OFF
Taillamp signal (To each
illumination)
10 to 14 V
Below 1 V
Tail (1M–6) – GND (1E–17)
L – W–B
Light control switch is in TAIL or
HEAD
Light control switch is OFF
Taillamp signal (To each
illumination)
10 to 14 V
Below 1 V
Tail (1M–8) – GND (1E–17)
G – W–B
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1845
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05–1682
DIAGNOSTICS
–
LIGHTING SYSTEM
Room lamp comes on
Room lamp goes off (When switch
is in DOOR position)
Below 1 V
10 to 14 V
ILL (1O–2) – GND (1E–17)
L – W–B
Illumination signal circuit
Luggage room lamp comes on
Luggage room light goes off (When
switch is in DOOR position)
Luggage room light signal
circuit
Below 1 V
10 to 14 V
CYLB (B5–7) – GND (1E–17)
W – W–B
Rear door is in lock position
Each of rear door is in unlock posi-
tion
Door lock position switch
circuit
10 to 14 V
Below 1 V
LSWR (B5–10) – GND (1E–7)
O – W–B
Front fog lamp switch sig-
nal circuit
Front fog lamp switch ON
Front fog lamp switch OFF
Below 1 V
10 to 14 V
LIB1 (B5–13) – GND (1E–17)
SB – W–B
Door courtesy lamp RH comes on
Door courtesy lamp RH goes off
Below 1 V
10 to 14 V
CYPL (B5–14) – GND (1E–17)
L – W–B
Door courtesy light circuit
Multiplex communication
signal circuit
MPX2 (B5–15) – GND (1E–17)
B – W–B
Power switch ON (IG)
Signal waveform
Front fog lamp operation
signal circuit
Front fog lamp comes on
Front fog lamp goes off
Below 1 V
10 to 14 V
FFOG (B5–17) – GND (1E–17)
Y – W–B
Headlamp dimmer switch
signal circuit
Light control switch is in AUTO
Light control switch is not in AUTO
Below 1 V
10 to 14 V
AUTO (B5–18) – GND (1E–17)
W – W–B
Door courtesy lamp LH comes on
Door courtesy lamp LH goes off
Below 1 V
10 to 14 V
CYLD (B5–19) – GND (1E–17)
Y – W–B
Door courtesy light circuit
Daytime running light does not oper-
ate
Daytime running light operates
Daytime running light op-
eration signal
10 to 14 V
Below 1 V
PWM1 (B6–3) – GND (1E–7)
(*1) SB – W–B
Daytime running light does not oper-
ate
Daytime running light operates
Daytime running light op-
eration signal
Below 1 V
10 to 14 V
HON (B6–12) – GND (1E–7)
W – W–B
Light control sensor circuit
(Ground circuit)
CLTE (B6–14) – GND (1E–7)
B – W–B
Always
Below 1 V
Light control sensor circuit
(Signal circuit)
CLTS (B6–15) – GND (1E–7)
W – W–B
Power switch ON (IG)
Signal waveform
Light control sensor circuit
(Power source circuit)
CLTB (B6–16) – GND (1E–7)
R – W–B
Power switch ON (IG)
10 to 14 V
DRL/DIM (B7–2) – GND
(1E–17)
Headlamp (High beam) comes on
Headlamp (High beam) goes off
Below 1 V
10 to 14 V
Y – W–B
DIM relay operation signal
Headlamp dimmer switch
signal circuit
Light control switch is in HEAD
Light control switch is not in HEAD
Below 1 V
10 to 14 V
HEAD (B7–3) – GND (1E–17)
B – W–B
Door lock position switch
circuit
Front RH door is in lock position
Front RH door is in unlock position
10 to 14 V
Below 1 V
LSWP (B7–10) – GND (1E–7)
Y – W–B
HEAD relay operation sig-
nal
Headlamp comes on
Headlamp goes off
Below 1 V
10 to 14 V
HRLY (B7–20) – GND (1E–7)
G – W–B
Headlamp dimmer switch
signal circuit
Light control switch is in TAIL
Light control switch is not in TAIL
Below 1 V
10 to 14 V
TAIL (B7–21) – GND (1E–7)
R – W–B
Headlamp dimmer switch is in
FLASH
Headlamp dimmer switch is not in
FLASH
Headlamp dimmer switch
signal circuit
Below 1 V
10 to 14 V
HF (B7–22) – GND (1E–7)
G – W–B
Door lock position switch
circuit
Front LH door is in lock position
Front LH door is in unlock position
10 to 14 V
Below 1 V
LSWD (B7–25) – GND (1E–7)
LG – W–B
*1: w/ Daytime Running Light
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1846
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05–1683
DIAGNOSTICS
–
LIGHTING SYSTEM
2.
HEADLIGHT BEAM LEVEL CONTROL ECU
H12
E73014
Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
Power source (From bat-
tery)
IG (H12–1) – E1 (H12–24)
V – W–B
Power switch ON (IG)
10 to 14 V
Height control sensor
(Power source)
SBR (H12–2) – E1 (H12–24)
P – W–B
Power switch ON (IG)
4.5 to 5.5 V
With power switch ON (IG) and
headlamp ON, change the vehicle
height and keep it for more than 2
seconds
Headlamp beam level
control actuator RH (Sig-
nal circuit)
1.0 to 12.6 V (approx.
10 seconds)
RHT (H12–3) – E1 (H12–24)
W – W–B
With power switch ON (IG) and
headlamp ON, change the vehicle
height and keep it for more than 2
seconds
Headlamp beam level
control actuator LH (Sig-
nal circuit)
1.0 to 12.6 V (approx.
10 seconds)
LHT (H12–4) – E1 (H12–24)
R – W–B
Height control sensor
(Power source)
SHR (H12–5) – E1 (H12–24)
L – W–B
Power switch ON (IG)
Above 2.5 V
Initialize signal input ter-
minal
PRST (H12–9) – E1 (H12–24)
B – W–B
Power switch ON (IG)
Above 5.0 V
HEAD relay operate sig-
nal
Light control switch is in HEAD
Light control switch is motion HEAD
Below 1 V
10 to 14 V
HDLP (H12–10) – E1 (H12–24)
G – W–B
Headlamp leveling warn-
ing signal (To combination
meter)
HEADLAMP LEVELING is indicate
HEADLAMP LEVELING is not indi-
cate
Below 1 V
10 to 14 V
WNG (H12–11) – E1 (H12–24)
L – W–B
Vehicle speed signal
(From combination meter)
Vehicle is driving at 30 km/h (18
mph)
Pulse generation
(See waveform 1)
SPDR (H12–12) – E1 (H12–24)
V – W–B
Headlamp beam level
control actuator RH (Pow-
er source circuit)
RH+ (H12–13) – E1 (H12–24)
B – W–B
Power switch ON (IG)
10 to 14 V
Headlamp beam level
control actuator LH (Pow-
er source)
LH+ (H12–14) – E1 (H12–24)
G – W–B
Power switch ON (IG)
10 to 14 V
Height control sensor
(Ground circuit)
SGR (H12–20) – E1 (H12–24)
Y – W–B
Always
Below 1 V
Headlamp beam level
control actuator RH
(Ground circuit)
RH– (H12–22) – E1 (H12–24)
BR – W–B
Always
Below 1 V
Headlamp beam level
control actuator LH
(Ground circuit)
LH– (H12–23) – E1 (H12–24)
LG – W–B
Always
Below 1 V
E1 (H12–24) – Body ground
(Body ground)
W–B – Body
ground
Ground
Always
Below 1 V
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1847
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05–1684
DIAGNOSTICS
–
LIGHTING SYSTEM
Waveform 1
HINT:
Terminal: SPDR – GND
Gauge set: 5 V/DIV, 20 ms/DIV
Condition: Vehicle is driving at approximately 30 km/h (18
mph).
A05135
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1848
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