Toyota Tundra (2015 year). Manual — part 2696
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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 (SKID CONTROL ECU CAN BRANCH WIRE)
(a) Disconnect the A17 brake actuator assembly (skid control
ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
A17-12 (CANH) - A17-13 (CANL)
Ignition switch off
54 to 69 Ω
Text in Illustration
*a
NG
REPAIR OR REPLACE SKID CONTROL ECU CAN
BRANCH WIRE OR CONNECTOR (CANH, CANL)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Skid Co...
4.
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 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
A17-16 (GND1) - 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
A17-1 (+BM) - Body ground
Always
11 to 14 V
A17-32 (+BS) - Body ground
Always
11 to 14 V
A17-8 (IG1) - Body ground
Ignition switch ON
11 to 14 V
Text in Illustration
*a
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE BRAKE ACTUATOR ASSEMBLY (SKID
CONTROL ECU)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Skid Co...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002VTI014X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Air Conditioning Amplifier Communication Stop
Mode; 2015 MY Tundra [08/2014 - ]
Air Conditioning Amplifier Communication Stop Mode
DESCRIPTION
DETECTION ITEM
SYMPTOM
TROUBLE AREA
Air Conditioning Amplifier
Communication Stop
Mode
Either condition is met:
"Air Conditioning Amplifier" is not
displayed on the "Bus Check"
screen.
"Air Conditioning Amplifier
Communication Stop Mode" in "DTC
Combination Table" applies.
Power source or inside air
conditioning amplifier
assembly
Air conditioning amplifier
assembly CAN branch
wire or connector
Air conditioning amplifier
assembly
WIRING DIAGRAM
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Air Con...
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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: Air Con...
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