Toyota Tundra (2015 year). Manual — part 252
OK
1.
CHECK BRAKE BOOSTER ASSEMBLY
(a) Disconnect the A18 booster connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
3 (BST) - 4 (BSTP)
Always
1.1 to 1.7 Ω
NG
REPLACE BRAKE BOOSTER ASSEMBLY
2.
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - ACTIVE BRAKE BOOSTER)
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
(a) Confirm that the skid control ECU connector and active brake
booster connector are properly connected.
(b) Disconnect the A17 ECU connector.
(c) Disconnect the A18 booster connector.
(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:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A17-31 (BST) - A18-3 (BST)
Always
Below 1 Ω
A17-31 (BST) - Body ground
Always
10 kΩ or higher
A17-17 (BSTP) - A18-4 (BSTP)
Always
Below 1 Ω
A17-17 (BSTP) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE VSC ACTUATOR ASSEMBLY
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000001P4P00RX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1311/12,C1380/64; Open or Short in Brake
Inhibit Relay Circuit; 2015 MY Tundra [08/2014 - ]
DTC
C1311/12 Open or Short in Brake Inhibit Relay Circuit
DTC
C1380/64 Stop Light Control Relay Malfunction
DESCRIPTION
The stop light control relays are built into the stop light circuit and prohibits the stop light from turning on under
VSC control.
DTC CODE
DTC DETECTION CONDITION
TROUBLE AREA
C1311/12
Open or short circuit is detected.
Stop light control relay
Stop light control circuit
C1380/64
Open or short circuit is detected.
Stop light control relay
Stop light control circuit
WIRING DIAGRAM
Refer to DTC C1249/49
.
INSPECTION PROCEDURE
NOTICE:
When replacing the VSC actuator assembly, perform the zero point calibration
.
PROCEDURE
1.
CHECK TERMINAL VOLTAGE (STOP LIGHT CONTROL RELAY)
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
OK
(a) Remove the stop light control relays from the engine room
relay block.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
Stop light control relay terminal 1 (BRK NO. 1) - Body ground
Ignition switch ON
11 to 14 V
Stop light control relay terminal 1 (BRK NO. 2) - Body ground
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
2.
INSPECT STOP LIGHT CONTROL RELAY (BRK NO. 1, BRK NO. 2)
(a) Remove the stop light control relays (BRK NO. 1 and BRK NO.
2) from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
for BRK NO. 1
for BRK NO. 2
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
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