Toyota Tundra (2015 year). Manual — part 148
OK
INSPECTION PROCEDURE
NOTICE:
When checking for DTCs, make sure that the blind spot monitor main switch assembly (warning canceling
switch assembly) is on.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - BLIND SPOT
MONITOR SENSOR LH)
(a) Disconnect the S6 blind spot monitor sensor RH connector.
(b) Disconnect the S5 blind spot monitor sensor LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
S6-1 (CA2P) - S5-1 (CA2P)
Always
Below 1 Ω
S6-6 (CA2N) - S5-6 (CA2N)
Always
Below 1 Ω
NG
REPAIR OR REPLACE CAN LINE OR CONNECTOR
2.
CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH - BATTERY
AND BODY GROUND)
(a) Disconnect the blind spot monitor sensor LH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM:...
OK
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
S5-5 (BLB) - Body ground
Ignition switch ON
11 to 14 V
Ignition switch off
Below 1 V
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
S5-10 (BLGD) - Body ground
Always
Below 1 Ω
Text in Illustration
*a
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
3.
CHECK BLIND SPOT MONITOR SENSOR LH
(a) Replace the blind spot monitor sensor LH with a new or normally functioning one
.
(b) Clear the DTCs
.
(c) Recheck for DTCs and check if the same DTC is output again
.
OK:
No DTCs are output.
NG
REPLACE BLIND SPOT MONITOR SENSOR RH
OK
END (BLIND SPOT MONITOR SENSOR LH IS
DEFECTIVE)
PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM:...
OK
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000004S2X01OX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: U1331; Software Incompatibility with
Body Control Module "B"; 2015 MY Tundra [08/2014 - ]
DTC
U1331
Software Incompatibility with Body Control Module "B"
DESCRIPTION
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
U1331
match.
Main body ECU (driver side
junction block assembly)
Blind spot monitor sensor
LH
Blind spot monitor sensor
RH
INSPECTION PROCEDURE
NOTICE:
When checking for DTCs, make sure that the blind spot monitor main switch assembly (warning canceling
switch assembly) is on.
PROCEDURE
1.
CONFIRM PART NUMBER (MAIN BODY ECU [DRIVER SIDE JUNCTION BLOCK
ASSEMBLY])
(a) Check the main body ECU (driver side junction block assembly) part number.
OK:
The part number is correct.
NG
REPLACE MAIN BODY ECU (DRIVER SIDE
JUNCTION BLOCK ASSEMBLY)
PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM:...
2.
CHECK DTC
(a) Clear the DTCs
.
(b) Recheck for DTCs and check if the same DTC is output again.
Result
RESULT
PROCEED TO
No DTC is output
A
DTC is output from the blind spot monitor sensor RH (master)
B
DTC is output from the blind spot monitor sensor LH (slave)
C
B
REPLACE BLIND SPOT MONITOR SENSOR RH
C
REPLACE BLIND SPOT MONITOR SENSOR LH
A
USE SIMULATION METHOD TO CHECK
PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM:...
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