Toyota Tundra (2015 year). Manual — part 2718
(a) Measure the resistance according to the value(s) in the
table below.
Standard Resistance:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J74-7 (CANH) - J17-16
(BAT)
Ignition switch off
6 kΩ or higher
J74-18 (CANL) - J17-16
(BAT)
Ignition switch off
6 kΩ or higher
Text in Illustration
*a
*b
GO TO STEP 23
OK
REPLACE NO. 2 JUNCTION CONNECTOR
12.
CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR -
NAVIGATION RECEIVER ASSEMBLY)
(a) Measure the resistance according to the value(s) in the
table below.
Standard Resistance:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J74-7 (CANH) - J17-16
(BAT)
Ignition switch off
6 kΩ or higher
J74-18 (CANL) - J17-16
(BAT)
Ignition switch off
6 kΩ or higher
Text in Illustration
*a
*b
GO TO STEP 25
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...
NEXT
OK
REPLACE NO. 2 JUNCTION CONNECTOR
13.
CONNECT CONNECTOR
(a) Reconnect the J74 No. 2 junction connector.
14.
CHECK FOR SHORT TO B+ IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER
ASSEMBLY)
(a) Disconnect the J19 air conditioning amplifier assembly
connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
J19-11 (CANH) - J17-16 (BAT)
Ignition switch off
6 kΩ or higher
J19-12 (CANL) - J17-16 (BAT)
Ignition switch off
6 kΩ or higher
Text in Illustration
*a
*b
REPAIR OR REPLACE CAN BRANCH WIRE
CONNECTED TO AIR CONDITIONING AMPLIFIER
ASSEMBLY (CANH, CANL)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...
NEXT
OK
REPLACE AIR CONDITIONING AMPLIFIER
ASSEMBLY
15.
CONNECT CONNECTOR
(a) Reconnect the J74 No. 2 junction connector.
16.
CHECK FOR SHORT TO B+ IN CAN BUS WIRE (4WD CONTROL ECU)
(a) Disconnect the A25 4WD control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
A25-23 (CANH) - J17-16 (BAT)
Ignition switch off
6 kΩ or higher
A25-22 (CANL) - J17-16 (BAT)
Ignition switch off
6 kΩ or higher
Text in Illustration
*a
*b
REPAIR OR REPLACE CAN BRANCH WIRE
CONNECTED TO 4WD CONTROL ECU (CANH, CANL)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...
NEXT
OK
REPLACE 4WD CONTROL ECU
17.
CONNECT CONNECTOR
(a) Reconnect the J74 No. 2 junction connector.
18.
CHECK FOR SHORT TO B+ IN CAN BUS WIRE (BUS BUFFER ECU)
(a) Disconnect the J59 bus buffer ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
J59-3 (CAN+) - J17-16 (BAT)
Ignition switch off
6 kΩ or higher
J59-2 (CAN-) - J17-16 (BAT)
Ignition switch off
6 kΩ or higher
Text in Illustration
*a
*b
REPAIR OR REPLACE CAN BRANCH WIRE
CONNECTED TO BUS BUFFER ECU (CAN+, CAN-)
OK
REPLACE BUS BUFFER ECU
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short t...
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