Toyota Tacoma (2015-2018) Service Manual: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Smart Key System|
DTC Code |
Detection Item |
See page |
|---|---|---|
|
B27A1 |
Open in Driver Side Electrical Antenna Circuit |
|
|
B27A5 |
Open in Front Floor Electrical Key Oscillator Circuit |
|
|
B27A6 |
Open in Rear Floor Electrical Key Oscillator Circuit |
|
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Terminals Of Ecu
TERMINALS OF ECU
1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
(a) Disconnect the C27 and C29 certification ECU (smart key ECU assembly) connectors.
(b) Measure the voltage and resistance a ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK FOR DTC
HINT:
When using the Techstream with the engine switch off, connect the Techstream
to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 s ...
Other materials:
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT GARAGE DOOR OPENER
(a) Press each switch and check that the red LED turns on. If one or
more of the switches does not turn on the LED, confirm normal operation
of the fuse and wire harness. If the fuse and wire harness are malfunctioni ...
Power Supply Drive Circuit (C1257)
DESCRIPTION
The motor relay (semiconductor relay) is built into the hydraulic brake booster
and drives the pump motor based on a signal from the skid control ECU (master cylinder
solenoid).
DTC No.
DTC Detecting Condition
Trouble Areas
C1257
...
Short to GND in Immobiliser System Power Source Circuit (B278A)
DESCRIPTION
When there is a short to GND in the power supply for the transponder key amplifier
of the engine switch, the certification ECU (smart key ECU assembly) stores this
DTC.
DTC Code
DTC Detection Condition
Trouble Area
DTC Output Confirmation ...
