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

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

DIAGNOSTIC TROUBLE CODE CHART

HINT:

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

Transponder Key ECU Assembly

DTC Code	Detection Item	See page
B2780	Push Switch / Key Unlock Warning Switch Malfunction
B2784	Antenna Coil Open / Short
B2793	Transponder Chip Malfunction
B2794	Unmatched Encryption Code
B2797	Communication Malfunction No. 1
B2798	Communication Malfunction No. 2

HINT:

The DTCs for the engine immobiliser system are specified below. If other codes are output, check the DTC chart for the SFI system.

ECM

DTC Code	Detection Item	See page
B2799*1	Engine Immobiliser System Malfunction
B279986*2	Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid
B279A*1	Theft Deterrent System Communication Line High Fixation
B279A12*2	Engine Immobiliser System Circuit Short to Battery
B279C*1	Theft Deterrent System Presence Detection
B279C95*2	Engine Immobiliser System Incorrect Assembly

*1: for 2TR-FE
*2: for 2GR-FKS

Data List / Active Test

DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any p ...

Theft Deterrent System Communication Line High Fixation (B279A,B279A12)

DESCRIPTION If the communication line (EFIO-IMI) to the transponder key ECU assembly is stuck high (e.g. shorted to +B), the ECM stores this DTC. DTC No. DTC Detection Condit ...

Other materials:

System Diagram
SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Skid control ECU (Brake actuator assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Steering angl ...

Check Mode Procedure
CHECK MODE PROCEDURE 1. DESCRIPTION (a) Check mode has a higher sensitivity to malfunctions and can detect malfunctions that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1 trip detection logic. ...

Components
COMPONENTS ILLUSTRATION *A w/ Off Road Package - - *1 NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY *2 NO. 2 ENGINE UNDER COVER SUB-ASSEMBLY *3 FRONT UPPER FENDER APRON SEAL ...