Toyota Tacoma (2015-2018) Service Manual: Destination Information Undefined (C1AB8)

Toyota Tacoma (2015-2018) Service Manual / Park Assist / Monitoring / Blind Spot Monitor System / Destination Information Undefined (C1AB8)

DESCRIPTION

This DTC is stored when correct destination information is not sent from the main body ECU (multiplex network body ECU) and destination information cannot be confirmed after a blind spot monitor has been replaced.

DTC Code	DTC Detection Condition	Trouble Area
C1AB8	The blind spot monitor sensor cannot communicate with the main body ECU (driver side junction block assembly).	CAN communication system Main body ECU (multiplex network body ECU) 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 main switch assembly (warning canceling switch assembly) is on.

PROCEDURE

1.	CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for CAN Communication System DTCs (See page OK: OK: ).

OK:

CAN communication system DTCs are not output.

GO TO CAN COMMUNICATION SYSTEM

2.	REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Replace the main body ECU (multiplex network body ECU) with a new or normally functioning one.

CHECK DTC

(a) Recheck for DTCs and check if the same DTC is output again (See page Result ).

Result

Result	Proceed to
No DTC is output	A
DTC is output from the blind spot monitor sensor LH (master)	B
DTC is output from the blind spot monitor sensor RH (slave)	C

END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)

REPLACE BLIND SPOT MONITOR SENSOR LH

REPLACE BLIND SPOT MONITOR SENSOR RH

Blind Spot Monitor Slave Module Beam Axis Inspection Incomplete (C1ABC)

DESCRIPTION This DTC is stored when a beam axis inspection has not been performed for the blind spot monitor sensor RH. HINT: This DTC is always stored after replacing a blind spot monitor sensor ...

Blind Spot Monitor Master Module Beam Axis Inspection Incomplete (C1ABB)

DESCRIPTION This DTC is stored when a beam axis inspection has not been performed for the blind spot monitor sensor LH. HINT: This DTC is always stored after replacing a blind spot monitor sensor ...

Other materials:

Short in Side Squib LH Circuit (B1825/56-B1828/56)
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Noise Occurs
PROCEDURE 1. NOISE CONDITION (a) Check from which direction the noise comes (front left or right, or rear left or right). OK: The location of the noise source can be determined. NG GO TO STEP 3 OK ...

System Description
SYSTEM DESCRIPTION 1. SYSTEM DESCRIPTION The following pattern will be used: "Operation" indicates user operation using the smart key system. "Expected operation of the vehicle" indicates how a known good vehicle will react in accordance with each operation. "Suspected ...