cic13153.pdf

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05–1066
DIAGNOSTICS
–
ELECTRONICALLY CONTOROLLED BRAKE SYSTEM
05IZQ–01
DTC
C1315/31
CHANGEOVER SOLENOID MALFUNCTION
(SMC1)
DTC
C1316/32
CHANGEOVER SOLENOID MALFUNCTION
(SMC2)
DTC
C1352/21
INCREASING PRESSURE SOLENOID
MALFUNCTION (FR)
DTC
C1353/23
INCREASING PRESSURE SOLENOID
MALFUNCTION (FL)
DTC
C1354/25
INCREASING PRESSURE SOLENOID
MALFUNCTION (RR)
DTC
C1355/27
INCREASING PRESSURE SOLENOID
MALFUNCTION (RL)
DTC
C1356/22
DECREASING PRESSURE SOLENOID
MALFUNCTION (FR)
DTC
C1357/24
DECREASING PRESSURE SOLENOID
MALFUNCTION (FL)
DTC
C1358/26
DECREASING PRESSURE SOLENOID
MALFUNCTION (RR)
DTC
C1359/28
DECREASING PRESSURE SOLENOID
MALFUNCTION (RR)
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1230
751526404.049.png
05–1067
DIAGNOSTICS
–
ELECTRONICALLY CONTOROLLED BRAKE SYSTEM
CIRCUIT DESCRIPTION
Each solenoid adjusts pressure which affects each wheel cylinder according to signals from the skid control
ECU and controls the vehicle.
The master cut solenoid (SMC 1/2) is closed and blocks the master cylinder pressure from the ECB control
pressure when the system is normal. The master cut solenoid is open and sends the master cylinder fluid
pressure to the non–assisted brake wheel cylinders during the fail safe due to system malfunction.
DTC No.
Detailed Code
DTC Detecting Condition
Trouble Area
SMC1 drive circuit is malfunction-
ing for 0.05 sec. or more.
Short to +B.
Brake actuator assy (SMC1)
C1315/31
61
Skid control ECU
Harness and connector
Open circuit in SMC1 continues
for 0.05 sec. or more when SMC1
is off
Brake actuator assy (SMC1)
Skid control ECU
Harness and connector
C1315/31
62
Open circuit in SMC1 continues
for 0.05 sec. or more when SMC1
is off.
Brake actuator assy (SMC1)
C1315/31
63
Skid control ECU
Harness and connector
Brake actuator assy (SMC1)
Over current in SMC1 continues
for 0.05 sec. or more.
C1315/31
64
Skid control ECU
Harness and connector
SMC1 driver circuit is malfunc-
tioning for 0.05 sec. or more.
Short to +B.
Brake acutator assy (SMC2)
Skid control ECU
Harness and connector
C1316/32
66
Open circuit in SMC2 continues
for 0.05 sec. or more when SMC2
is off.
Brake acutator assy (SMC2)
C1316/32
67
Skid control ECU
Harness and connector
Brake acutator assy (SMC2)
Skid control ECU
Harness and connector
Open circuit in SMC2 continues
for 0.05 sec. or more.
C1316/32
68
Brake acutator assy (SMC2)
Skid control ECU
Over current in SMC2 continues
for 0.05 sec. or more.
C1316/32
69
Harness and connector
Open circuit in SLAFR continues
for 0.05 sec. or more when SLAFR
is off.
Brake actuator assy
C1352/21
11
Skid control ECU
Harness and connector
Open circuit in SLAFR continues
for 0.05 sec. or more when SLAFR
is on.
Brake actuator assy
Skid control ECU
Harness and connector
C1352/21
12
Short to +B or voltage leak in
SLAFR continues for 0.05 sec. or
more.
Brake actuator assy
Skid control ECU
C1352/21
13
Harness and connector
Brake actuator assy
Skid control ECU
Harness and connector
Over current in SLAFR continues
for 0.05 sec. or more
C1352/21
14
Open circuit in SLAFL continues
for 0.05 sec. or more when SLAFL
is off.
Brake acutator assy
Skid control ECU
Harness and connector
C1353/23
21
Open circuit in SLAFL continues
for 0.05 sec. or more when SLAFL
is on.
Brake acutator assy
C1353/23
22
Skid control ECU
Harness and connector
Short to +B or voltage leak in
SLAFL continues for 0.05 sec. or
more.
Brake acutator assy
C1353/23
23
Skid control ECU
Harness and connector
Brake acutator assy
Skid control ECU
Over current in SLAFL continues
for 0.05 sec. or more.
C1353/23
24
Harness and connector
Open circuit in SLARR continues
for 0.05 sec. or more when
SLARR is off
Brake actuator assy
C1354/25
31
Skid control ECU
Harness and connecotor
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1231
751526404.059.png 751526404.061.png 751526404.062.png 751526404.001.png 751526404.002.png 751526404.003.png 751526404.004.png 751526404.005.png 751526404.006.png 751526404.007.png 751526404.008.png 751526404.009.png 751526404.010.png 751526404.011.png 751526404.012.png 751526404.013.png 751526404.014.png 751526404.015.png 751526404.016.png 751526404.017.png 751526404.018.png 751526404.019.png 751526404.020.png
 
05–1068
DIAGNOSTICS
–
ELECTRONICALLY CONTOROLLED BRAKE SYSTEM
DTC No.
Detailed Code
DTC Detecting Condition
Trouble Area
Open circuit in SLARR continues
for 0.05 sec. or more when
SLARR is on.
Brake actuator assy
Skid control ECU
Harness and connecotor
C1354/25
32
Short to +B or voltage leak in
SLARR continues for 0.05 sec. or
more.
Brake actuator assy
Skid control ECU
C1354/25
33
Harness and connecotor
Brake actuator assy
Over current in SLARR continues
for 0.05 sec. or more.
C1354/25
34
Skid control ECU
Harness and connecotor
Open circuit in SLARL continues
for 0.05 sec. or more when SLARL
is off.
Brake acutator assy
Skid control ECU
Harness and connector
C1355/27
41
Open circuit in SLARL continues
for 0.05 sec. or more when SLARL
is on.
Brake acutator assy
C1355/27
42
Skid control ECU
Harness and connector
Short to +B or voltage leak in
SLARL continues for 0.05 sec. or
more.
Brake acutator assy
C1355/27
43
Skid control ECU
Harness and connector
Brake acutator assy
Skid control ECU
Harness and connector
Over current in SLARL continues
for 0.05 sec. or more.
C1355/27
44
Open circuit in SLRFR continues
for 0.05 sec. or more when
SLRFR is off.
Brake actuator assy
Skid control ECU
C1356/22
16
Harness and connector
Open circuit in SLRFR continues
for 0.05 sec. or more when
SKRFR is on.
Brake actuator assy
Skid control ECU
Harness and connector
C1356/22
17
Short to +B or voltage leak in
SLRFR continues for 0.05 sec. or
more.
Brake actuator assy
Skid control ECU
Harness and connector
C1356/22
18
Brake actuator assy
Over current in SLRFR continues
for 0.05 sec. or more.
C1356/22
19
Skid control ECU
Harness and connector
Open circuit in SLRFL continues
or 0.05 sec. or more when SLRFL
is off.
Brake actuator assy
Skid control ECU
Harness and connector
C1357/24
26
Open circuit in SLRFL continues
for 0.05 sec. or more when SLRFL
is on.
Brake actuator assy
Skid control ECU
C1357/24
27
Harness and connector
Short to +B or voltage leak in
SLRFL continues for 0.05 sec. or
more.
Brake actuator assy
C1357/24
28
Skid control ECU
Harness and connector
Brake actuator assy
Skid control ECU
Harness and connector
Over current in SLRFL continues
for 0.05 sec. or more.
C1357/24
29
Open circuit in SLRRR continues
for 0.05 sec. or more when
SLRRR is off.
Brake actuator assy
C1358/26
36
Skid control ECU
Harness and connector
Open circuit in SLRRR continues
for 0.05 sec. or more when
SLRRR is on.
Brake actuator assy
C1358/26
37
Skid control ECU
Harness and connector
Short to +B or voltage leak in
SLRRR continues for 0.05 sec. or
more.
Brake actuator assy
Skid control ECU
C1358/26
38
Harness and connector
Brake actuator assy
Over current in SLRRR continues
for 0.05 sec. or more.
C1358/26
39
Skid control ECU
Harness and connector
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1232
751526404.021.png 751526404.022.png 751526404.023.png 751526404.024.png 751526404.025.png 751526404.026.png 751526404.027.png 751526404.028.png 751526404.029.png 751526404.030.png 751526404.031.png 751526404.032.png 751526404.033.png 751526404.034.png 751526404.035.png 751526404.036.png 751526404.037.png 751526404.038.png 751526404.039.png 751526404.040.png 751526404.041.png 751526404.042.png 751526404.043.png 751526404.044.png 751526404.045.png 751526404.046.png
 
05–1069
DIAGNOSTICS
–
ELECTRONICALLY CONTOROLLED BRAKE SYSTEM
DTC No.
Detailed Code
DTC Detecting Condition
Trouble Area
Open circuit in SLRRL continues
for 0.05 sec. or more when SLRRL
is off.
Brake actuator assy
Skid control ECU
Harness and connector
C1359/28
46
Open circuit in SLRRL continues
for 0.05 sec. or more when SLRRL
is on.
Brake actuator assy
Skid control ECU
C1359/28
47
Harness and connector
Short to +B or voltage leak in
SLRRL continues for 0.05 sec. or
more.
Brake actuator assy
C1359/28
48
Skid control ECU
Harness and connector
Brake actuator assy
Skid control ECU
Harness and connector
Over current in SLRRL continues
for 0.05 sec. or more.
C1359/28
49
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1233
751526404.047.png 751526404.048.png 751526404.050.png 751526404.051.png 751526404.052.png 751526404.053.png 751526404.054.png 751526404.055.png 751526404.056.png 751526404.057.png 751526404.058.png
 
05–1070
DIAGNOSTICS
–
ELECTRONICALLY CONTOROLLED BRAKE SYSTEM
WIRING DIAGRAM
A2
Brake Actuator Assy
Skid Control ECU
6
5
FR–
LG
S7
SLAFR–
8
7
FR+
Y
S7
SLAFR+
26
P
RL–
23
SLRRL–
S7
16
W
RL+
24
S7
SLRRL+
27
LG
RL–
9
S7
SLARL–
15
L
RL+
10
S7
SLARL+
18
RR–
BR
25
S10
SLRRR–
20
RR+
R
26
S10
SLRRR+
9
RR–
P
11
S10
SLARR–
19
V
12
RR+
S10
SLARR+
26
L
FL–
28
S10
SLRFL–
8
Y
27
FL+
S10
SLRFL+
2
O
FL–
14
S10
SLAFL–
1
P
FL+
13
S10
SLAFL+
34
FR–
B
21
S7
SLRFR–
17
Y
FR+
22
S7
SLRFR+
3
W
SMC2
6
S10
SMC2
4
20
R
SMC1
S7
SMC1
F47769
2004 Prius – Preliminary Release (RM1075U)
Author:
Date:
1234
751526404.060.png

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