Toyota Tundra Service Manual: Steering Angle Sensor (C1A47)

DESCRIPTION

The blind spot monitor sensor receives steering angle signals from the steering sensor via CAN communication.

DTC Code	DTC Detection Condition	Trouble Area
C1A47	A fail flag is transmitted from the steering sensor	Steering sensor Blind spot monitor sensor LH Blind spot monitor sensor RH

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is turned on.
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.
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After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
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PROCEDURE

CHECK DTC

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs and check if the same DTC is output again.

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OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

2.	REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

(a) Replace the spiral with sensor cable sub-assembly with a new or known good one. (See page ).

CHECK DTC

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs and check if the same DTC is output again.

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Result

Result	Proceed to
No DTC is output	A
DTC C1A47 is output ("Blind Spot Monitor Master")	B
DTC C1A47 is output ("Blind Spot Monitor Slave")	C

END (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY WAS DEFECTIVE)

REPLACE BLIND SPOT MONITOR SENSOR RH

REPLACE BLIND SPOT MONITOR SENSOR LH

Toyota Tundra Service Manual > Tire Pressure Warning System: Cannot Switch to Automatic ID Registration Mode
DESCRIPTION When the tire pressure warning reset switch is turned on and off 3 times within 3 seconds (pressed → released → pressed → released → pressed → released), the tire pressure warning ECU and receiver switches to ID registration mode according to the automatic ID registration funct ...

Toyota Tundra Owners Manual