Toyota Tacoma (2015-2018) Service Manual: Diagnostic Trouble Code Chart

Toyota Tacoma (2015-2018) Service Manual / Engine Immobiliser / Engine Immobiliser System(w/ Smart Key System) / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

Certification ECU (Smart Key ECU Assembly)

DTC Code	Detection Item	See page
B2784	Antenna Coil Open / Short
B278A	Short to GND in Immobiliser System Power Source Circuit
B278D	Malfunction of ID-BOX Recognition

ECM

DTC Code	Detection Item	See page
B279986	Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid
B279A12	Engine Immobiliser System Circuit Short to Battery
B279C95	Engine Immobiliser System Incorrect Assembly

Data List / Active Test

DATA LIST / ACTIVE TEST 1. DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when dec ...

Engine Immobiliser System Incorrect Assembly (B279C95)

DESCRIPTION This code is stored when an ECM that is incompatible with the engine immobiliser system is installed to the vehicle. DTC Code DTC Detection Condition T ...

Other materials:

Brake Switch "A" Signal Compare Failure (P057162)
DESCRIPTION When the brake pedal is depressed, stop light switch assembly sends a signal to the ECM. Upon receiving the signal, the ECM cancels the cruise control system. DTC Code DTC Detection Condition Trouble Area MIL Note ...

Lost Communication With Vehicle Dynamics Control Module (U0122)
DESCRIPTION This DTC is detected if communication is lost with the skid control ECU (brake actuator assembly). DTC No. Detection Item DTC Detection Condition Trouble Area U0122 Lost Communication with Vehicle Dynamics Contro ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a Diagnostic System Check (See page ). 2. INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision and Airbag has not Deployed) CAUTION: For side airbag ...