Toyota Tundra (2015 year). Manual — part 237
OK
OK
A
USE SIMULATION METHOD TO CHECK
4.
CHECK REAR SPEED SENSOR INSTALLATION
(a) Check that the speed sensor installation bolt is tightened
properly.
OK:
The installation bolt is tightened properly.
NG
TIGHTEN BOLT PROPERLY
5.
CHECK REAR SPEED SENSOR
(a) Visually check the speed sensor for deformation and damage.
OK:
No deformation or damage.
There is no gap between the sensor and rear axle carrier.
NG
REPLACE REAR SPEED SENSOR
6.
CHECK SPEED SENSOR TIP
(a) Remove the speed sensor
.
(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NG
CLEAN OR REPLACE SPEED SENSOR
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
OK
7.
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)
(a) Confirm that the skid control ECU connector and speed sensor
connector are properly connected.
(b) Disconnect the A17 ECU connector.
(c) Disconnect the b3 and b4 sensor connectors.
(d) Inspect both the connector case and the terminal for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for RH
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A17-43 (RR+) - b3-2
Always
Below 1 Ω
A17-42 (RR-) - b3-1
A17-43 (RR+) - Body ground
Always
10 kΩ or higher
A17-42 (RR-) - Body ground
for LH:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
OK
OK
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A17-36 (RL+) - b4-2
Always
Below 1 Ω
A17-37 (RL-) - b4-1
A17-36 (RL+) - Body ground
Always
10 kΩ or higher
A17-37 (RL-) - Body ground
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
(SPEED SENSOR CIRCUIT)
8.
CHECK REAR SPEED SENSOR (INPUT VOLTAGE)
(a) Reconnect the A17 ECU connector.
(b) Disconnect the b3 and b4 sensor connectors.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
b3-2 - Body ground
Ignition switch ON
5.5 to 20 V
b4-2 - Body ground
NG
REPLACE VSC ACTUATOR ASSEMBLY
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
A
NEXT
9.
RECONFIRM DTC
(a) Clear the DTC(s)
.
(b) Start the engine.
.
Result
RESULT
PROCEED TO
DTC is output
A
DTC is not output
B
B
USE SIMULATION METHOD TO CHECK
10.
REPLACE REAR SPEED SENSOR
(a) Replace the rear speed sensor
.
11.
RECONFIRM DTC
(a) Clear the DTC(s)
.
(b) Start the engine.
.
Result
RESULT
PROCEED TO
DTC is output
A
DTC is not output
B
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
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