Toyota Tacoma (2015-2018) Service Manual: 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 |
|
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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:
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
The main body ECU (multiplex network body ECU) and certification ECU (smart key
ECU assembly) control the LIN communication system. LIN communication system data
and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector
3 (DLC3).
When th ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE TAIL GATE PROTECTOR
(See page )
2. REMOVE TAIL GATE SERVICE HOLE COVER
(a) Using a T30 "TORX" socket wrench, remove the 8 screws and tail gate
service hole cover.
3. REMOVE REAR TELEVISION CAMER ...
Certification ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Certification ECU Communication Stop Mode
Either condition is met:
Communication stop for "Certification (Smart)" is indicated
on the "Communication Bus Ch ...
