2001 TOYOTA SEQUOIA terminal TC

F19145
Delta S Sensor
(Pedal Stroke
Speed Sensor
VCP
DI±962
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1156 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check for open or short circuit in harness and connector between delta S sensor
(pedal stroke speed sensor) and skid control ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
3 Inspect the delta S sensor (pedal stroke speed sensor ) terminal voltage (VCP
terminal)
PREPARATION:
Disconnect the delta S sensor (pedal stroke speed sensor) con-
nector.
CHECK:
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage between VCP terminal and body
ground.
OK:
Voltage: 5 V
NG Replace skid control ECU
(See page BR±52).
NOTICE:
When replacing the skid control ECU, perform zero point
calibration (See page DI±897).
OK
Replace brake booster (See page BR±22).

± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±963
1157 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C1249 / 49 Open Circuit in Stop Light Switch Cir-
cuit
CIRCUIT DESCRIPTION
The skid control ECU inputs the stop light switch signal and detects the status of the brake operation.
The skid control ECU has an open detection circuit. If an open in the stop lamp switch input line or GND side
stop lamp circuit is detected when the stop lamp switch is off, this DTC is output.
DTC No.DTC Detecting ConditionTrouble Area
C1249 / 49ECU terminal STP voltage is low when both ignition switch
and stop light switch are ON.
Stop light switch

Stop light switch circuit

Skid control ECU
DI93P±03

F16994
STP
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±965
1159 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check operation of the stop light switch.
CHECK:
Check that the stop light comes on when the brake pedal is depressed and turns off when the brake pedal
is released.
OK:
Stop light switch operation is normal.
NG Repair stop light circuit (See page BE±46).
OK
2 Check voltage between terminal STP of the skid control ECU and body ground.
PREPARATION:
Disconnect the skid control ECU connector.
CHECK:
Measure the voltage between terminal STP of the skid control
ECU harness side connector and body ground during depress-
ing the brake pedal.
OK:
Voltage: 8 to 14 V
OK Replace skid control ECU
(See page BR±52).
NOTICE:
When replacing the skid control ECU, perform the zero
point calibration (See page DI±897).
NG
Check for open circuit in harness and con-
nector between skid control ECU and stop
light switch (See page IN±35).

F16991
GND
DI±968
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1162 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check continuity between terminal GND of the skid control ECU connector and
body ground.
PREPARATION:
Disconnect the skid control ECU connector.
CHECK:
Measure the resistance between terminal GND of the skid con-
trol ECU harness side connector and body ground.
OK:
Resistance: 1 W or less
NG Repair or replace harness or connector.
OK
Check and replace ABS & VSC actuator with
skid control ECU (See page BR±52).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page DI±897).

F13988
34
DI±970
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1164 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check active brake booster solenoid.
PREPARATION:
Disconnect the connector from the brake booster.
CHECK:
Check resistance between terminals 3 and 4 of the brake boost-
er.
OK:
Resistance: 1.1 to 1.7 W
NG Replace brake booster.
OK
2 Check for open and short circuit in harness and connector between skid control
ECU and brake booster (See page IN±35).
NG Repair or replace harness or connector.
OK
Replace skid control ECU
(See page BR±52).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page DI±897).

F13968
ON
1
3
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±973
1167 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check voltage between terminals 1 and 3 of the brake inhibit relay and body
ground.
PREPARATION:
Remove the brake inhibit relay from the connector.
CHECK:
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage between terminal 1 of the brake in-
hibit relay harness side connector and body ground.
OK:
Voltage: 10 to 14 V
CHECK:
Measure the voltage between terminal 3 of the brake inhibit
relay harness side connector and body ground when the brake
pedal is depressed.
OK:
Voltage: 8 to 14 V
NG Check and repair harness or connector.
OK

F17285
1
2 34
1
4
3
2
DI±974
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1168 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check brake inhibit relay.
CHECK:
Check continuity between the following terminals of the brake
inhibit relay.
OK:
Terminals 1 and 2Continuity
(Reference value 62 W)
Terminals 3 and 4Continuity
CHECK:
(a) Apply battery positive voltage between terminals 1 and 2.
(b) Check continuity between terminals.
Terminals 3 and 4Open
NG Replace brake inhibit relay.
OK
3 Check for open and short circuit in harness and connector between brake inhibit
relay and skid control ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
If the same code is still indicated after the DTC is deleted, check the condition of each connection.
If the connections are normal, the skid control ECU may be defective.
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page DI±897).

F16958
ABS & VSC Actuator
(Skid Control ECU ) M2
Master Cylinder Pressure
Sensor No. 1
VCM
PMC
E1 30
28
29 S1
26
25
27 S1
S1
S1
S1
S1VCM2
PMC2
E2 B
R
W 3
2
1 VCM
PMC
E1
M3
Master Cylinder Pressure
Sensor No. 2
3
2
1 VCM2
PMC2
E2B
R
W (Shielded)
(Shielded)J28
J/C A
A A
AW±B Instrument Panel J/B
W±B
J8
J/C
IE1F1K 912BR
BR
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±983
1177 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C1360 / 61 Malfunction in Master Cylinder Pres-
sure Sensor
CIRCUIT DESCRIPTION
The master cylinder pressure sensors are connected to the skid control ECU.
Attached to the master cylinder: one reads front master cylinder pressure and the other reads rear master
cylinder pressure.
DTC No.DTC Detecting ConditionTrouble Area
C1360 / 61
When any of the following conditions are detected:
1. Noise to ECU terminal PMC occurs.
2. While ECU terminal STP is OFF, ECU terminal PMC
voltage is out of standard range.
3. When ECU terminal IG1 voltage is proper, ECU terminal
VCM voltage is out of range.
4. When ECU terminal VCM voltage is proper, ECU termi-
nal PMC voltage is out of range.

Master cylinder pressure sensor

Master cylinder pressure sensor circuit
WIRING DIAGRAM
DI93V±05