Toyota Tundra (2015 year). Manual — part 2695
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OK
2.
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of
the CAN main wire and the CAN branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the
SRS system.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected
.
3.
CHECK FOR OPEN IN CAN BUS WIRE (BRAKE CONTROL WITH BRACKET RELAY CAN
BRANCH WIRE)
(a) Disconnect the J156 brake control with bracket relay
connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
J156-4 (CANH) - J156-10 (CANL)
Ignition switch off
54 to 69 Ω
Text in Illustration
*a
NG
REPAIR OR REPLACE BRAKE CONTROL WITH
BRACKET RELAY CAN BRANCH WIRE OR
CONNECTOR (CANH, CANL)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Trailer...
4.
CHECK HARNESS AND CONNECTOR (BRAKE CONTROL WITH BRACKET RELAY -
BATTERY AND BODY GROUND)
(a) Connect the cable to the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be
initialized after the cable is reconnected
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J156-5 (GND) - Body ground
Always
Below 1 Ω
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J156-8 (+B) - Body ground
Always
11 to 14 V
J156-2 (IG) - Body ground
Ignition switch ON
11 to 14 V
Text in Illustration
*a
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE BRAKE CONTROL WITH BRACKET RELAY
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Trailer...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002VT6013X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Skid Control ECU Communication Stop Mode;
2015 MY Tundra [08/2014 - ]
Skid Control ECU Communication Stop Mode
DESCRIPTION
DETECTION ITEM
SYMPTOM
TROUBLE AREA
Skid Control ECU
Communication Stop
Mode
Either condition is met:
"Skid Control (ABS/VSC/TRAC)" is
not displayed on the "Bus Check"
screen.
"Skid Control ECU Communication
Stop Mode" in "DTC Combination
Table" applies.
Power source or inside of
brake actuator assembly
(skid control ECU)
Brake actuator assembly
(skid control ECU) CAN
branch wire or connector
Brake actuator assembly
(skid control ECU)
WIRING DIAGRAM
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Skid Co...
NEXT
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication
with the CAN, which causes resistance variation.
PROCEDURE
1.
PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the
battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice
before proceeding with work
.
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Skid Co...
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