2007 TOYOTA SIENNA Service Repair Manual

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Page 2377 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–29
BC
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
RH:
LH

Page 2378 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–30BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
OK
(a) Clear the DTCs (See page BC-10).
(b) Drive the vehicle at a speed of approximately 32 km/h
(20 mph) or more for 60 seconds or more.
(c) Che

Page 2379 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–9
BC
PROBLEM SYMPTOMS TABLE
If there are no DTCs output but the problem still occurs,
check the circuits for each problem symptom in the order
given in

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–9
BC
PROBLEM SYMPTOMS TABLE
If there are no DTCs output but the problem still occurs,
check the circuits for each problem symptom in the order
given in the table below and proceed to the relevant
troubleshooting page.
NOTICE:
When replacing the brake actuator assembly, sensor,
etc., turn the ignition switch off.
HINT:
Inspect the fuse and relay before investigating the suspected
areas as shown in the table below. Inspect each malfunction
circuit in numerical order for the corresponding symptom.
Anti-lock brake system:
Symptom Suspected Area See page
ABS does not operate1. Check the DTC again and make sure that the normal
system code is output.BC-10
2. IG power source circuitBC-37
3. Front speed sensor circuitBC-17
4. Rear speed sensor circuitBC-23
5. Check the brake actuator with the intelligent tester. If
abnormal, check the hydraulic circuit for leakage.BC-183
6. If the symptoms still occur even after the above circuits in
suspected areas have been inspected and proved to be
normal, replace the brake actuator assembly.BC-184
ABS does not operate efficiently1. Check the DTC again and make sure that the normal
system code is output.BC-10
2. Front speed sensor circuitBC-17
3. Rear speed sensor circuitBC-23
4. Stop light switch circuitBC-41
5. Check the brake actuator with intelligent tester. If abnormal,
check that hydraulic circuit for leakage.BC-183
6. If the symptoms still occur even after the above circuits in
suspected areas have been inspected and proved to be
normal, replace the brake actuator assembly.BC-184
ABS warning light abnormal (Remains on)1. ABS warning light circuitBC-47
2. Brake actuator assemblyBC-184
ABS warning light abnormal (Does not come on)1. ABS warning light circuitBC-50
2. Brake actuator assemblyBC-184
BRAKE warning light abnormal (Remains on)1. BRAKE warning light circuitBC-52
2. Brake actuator assemblyBC-184
BRAKE warning light abnormal (Does not come on)1. BRAKE warning light circuitBC-59
2. Brake actuator assemblyBC-184
DTC check cannot be done1. Check the DTC again and make sure that the normal
system code is output.BC-10
2. TC and CG terminal circuitBC-61
3. If the symptoms still occur even after the above circuits in
suspected areas have been inspected and proved to be
normal, replace the brake actuator assembly.BC-184
Test mode (Signal check) cannot be done1. TS and CG terminal circuitBC-64
2. Brake actuator assemblyBC-184

Page 2380 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–10BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
TERMINALS OF ECU
Symbols (Terminal No.) Wiring Color Condition Specified Condition
+BS (2) - GND (1,23) W - W-B Always 10 to 14 V
FL+ (13) - FL- (2

Page 2381 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–11
BC
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Release the parking brake pedal.
(b) Check the warning lights.
When ignition switch is turned ON, check that th

Page 2382 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–12BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
(4) As an example, refer to the chart below for the
blinking patterns of the normal system code and
trouble codes 11 and 21.
(5) The codes are ex

Page 2383 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–13
BC
2. DTC CHECK/CLEAR (WHEN USING INTELLIGENT
TESTER):
(a) DTC check
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch to

Page 2384 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–17
BC
DIAGNOSTIC TROUBLE CODE CHART
HINT:
• If a trouble code is displayed during the DTC check, check
the circuit indicated by the DTC. For details o

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–17
BC
DIAGNOSTIC TROUBLE CODE CHART
HINT:
• If a trouble code is displayed during the DTC check, check
the circuit indicated by the DTC. For details of each code,
turn to the page for the respective DTC Code. in the DTC
chart.
• Inspect the fuse and relay before investigating the trouble
areas as shown in the table below.
DTC chart of ABS:
DTC Code Detection Item Trouble Area See page
C0200/31 Front Speed Sensor RH Circuit1. Front speed sensor RH
2. Front speed sensor RH circuit
3. Speed sensor rotor
4. Sensor installation
5. Brake actuator assemblyBC-17
C0205/32 Front Speed Sensor LH Circuit1. Front speed sensor LH
2. Front speed sensor LH circuit
3. Speed sensor rotor
4. Sensor installation
5. Brake actuator assemblyBC-17
C0210/33 Rear Speed Sensor RH Circuit1. Rear speed sensor RH
2. Rear speed sensor RH circuit
3. Speed sensor rotor
4. Sensor installation
5. Brake actuator assemblyBC-23
C0215/34 Rear Speed Sensor LH Circuit1. Rear speed sensor LH
2. Rear speed sensor LH circuit
3. Speed sensor rotor
4. Sensor installation
5. Brake actuator assemblyBC-23
C0226/21 SFR Solenoid Circuit1. SFRH or SFRR circuit
2. Brake actuator assemblyBC-29
C0236/22 SFL Solenoid Circuit1. SFLH or SFLR circuit
2. Brake actuator assemblyBC-29
C0246/23 SRR Solenoid Circuit1. SRRH or SRRR circuit
2. Brake actuator assemblyBC-29
C0256/24 SRL Solenoid Circuit1. SRLH or SRLR circuit
2. Brake actuator assemblyBC-29
C0273/13 Open in ABS Motor Relay Circuit1. ABS 1 fuse
2. ABS motor relay
3. ABS motor relay circuit
4. Brake actuator assemblyBC-31
C0274/14Short to B+ in ABS Motor Relay
Circuit1. ABS 1 fuse
2. ABS motor relay
3. ABS motor relay circuit
4. Brake actuator assemblyBC-31
C0278/11Open in ABS Solenoid Relay
Circuit1. ABS 2 fuse
2. ABS solenoid relay
3. ABS solenoid relay circuit
4. Brake actuator assemblyBC-34
C0279/12Short to B+ in ABS Solenoid
Relay Circuit1. ABS 2 fuse
2. ABS solenoid relay
3. ABS solenoid relay circuit
4. Brake actuator assemblyBC-34
C1235/35Foreign Object is Attached on Tip
of Front Speed Sensor RH1. Front speed sensor RH
2. Speed sensor rotor
3. Sensor installation
4. Brake actuator assemblyBC-17

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