Toyota Tundra (2015 year). Manual — part 2702
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002VTF00RX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Center Airbag Sensor Communication Stop Mode;
2015 MY Tundra [08/2014 - ]
Center Airbag Sensor Communication Stop Mode
DESCRIPTION
DETECTION ITEM
SYMPTOM
TROUBLE AREA
Center Airbag Sensor
Communication Stop
Mode
Either condition is met:
"Airbag" is not displayed on the "Bus
Check" screen.
"Center Airbag Sensor
Communication Stop Mode" in "DTC
Combination Table" applies.
Power source or center
airbag sensor assembly
Center airbag sensor
assembly CAN branch
wire or connector
Center airbag sensor
assembly
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Center ...
NEXT
NEXT
.
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
.
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 (CENTER AIRBAG SENSOR ASSEMBLY CAN
BRANCH WIRE)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Center ...
OK
(a) Disconnect the J46 center airbag sensor assembly
connector.
for Column Shift Type:
for Floor Shift Type:
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
J46-13 (CANH) - J46-22 (CANL)
Ignition switch off
54 to 69 Ω
Text in Illustration
*a
NG
REPAIR OR REPLACE CENTER AIRBAG SENSOR
ASSEMBLY CAN BRANCH WIRE OR CONNECTOR
(CANH, CANL)
4.
CHECK HARNESS AND CONNECTOR (CENTER AIRBAG SENSOR ASSEMBLY -
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
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Center ...
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J46-25 (E1) - Body ground
Always
Below 1 Ω
J46-26 (E2) - Body ground
Always
Below 1 Ω
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
J46-21 (IG2) - Body ground
Ignition switch ON
11 to 14 V
Text in Illustration
*a
Result
RESULT
PROCEED TO
OK (for Column Shift Type)
A
OK (for Floor Shift Type)
B
NG
C
B
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Center ...
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