Toyota Tacoma (2015-2018) Service Manual: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below (proceed to the page listed for that circuit).
1. Occupant Detection ECU
HINT:
When DTC B1650/32 is detected as a result of troubleshooting the Supplemental Restraint System, perform troubleshooting for the occupant classification system as shown in the chart below.
|
DTC Code |
Detection Item |
Trouble Area |
Passenger Airbag ON/OFF Indicator (OFF Indicator) |
See page |
|---|---|---|---|---|
|
B1771 |
Passenger Side Buckle Switch Circuit Malfunction |
1. Front seat inner belt assembly (Buckle switch RH) 2. No. 1 seat wire 3. Floor wire 4. Occupant detection ECU |
ON |
|
|
B1780 |
Front Occupant Classification Sensor LH Circuit Malfunction |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor front LH) 2. No. 1 seat wire 3. Occupant detection ECU |
ON |
|
|
B1781 |
Front Occupant Classification Sensor RH Circuit Malfunction |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor front RH) 2. No. 1 seat wire 3. Occupant detection ECU |
ON |
|
|
B1782 |
Rear Occupant Classification Sensor LH Circuit Malfunction |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor rear LH) 2. No. 1 seat wire 3. Occupant detection ECU |
ON |
|
|
B1783 |
Rear Occupant Classification Sensor RH Circuit Malfunction |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor rear RH) 2. No. 1 seat wire 3. Occupant detection ECU |
ON |
|
|
B1785 |
Front Occupant Classification Sensor LH Collision Detection |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor front LH) 2. Occupant detection ECU |
ON |
|
|
B1786 |
Front Occupant Classification Sensor RH Collision Detection |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor front RH) 2. Occupant detection ECU |
ON |
|
|
B1787 |
Rear Occupant Classification Sensor LH Collision Detection |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor rear LH) 2. Occupant detection ECU |
ON |
|
|
B1788 |
Rear Occupant Classification Sensor RH Collision Detection |
1. Front seat with adjuster frame assembly RH (Occupant classification sensor rear RH) 2. Occupant detection ECU |
ON |
|
|
B1790 |
Center Airbag Sensor Assembly Communication Circuit Malfunction |
1. Floor wire 2. No. 1 seat wire 3. Occupant detection ECU 4. Airbag sensor assembly |
ON |
|
|
B1793 |
Occupant Classification Sensor Power Supply Circuit Malfunction |
1. Front seat with adjuster frame assembly RH (Occupant classification sensors) 2. No. 1 seat wire 3. Occupant detection ECU |
ON |
|
|
B1794 |
Open in Occupant Classification ECU Battery Positive Line |
1. Wire harness 2. Occupant detection ECU |
ON |
|
|
B1795 |
Occupant Classification ECU Malfunction |
1. Occupant detection ECU |
ON |
|
|
B1796 |
Sleep Operation Failure of Occupant Classification ECU |
1. Occupant detection ECU |
ON |
|
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Data List / Active Test
DATA LIST / ACTIVE TEST
HINT:
By accessing the Data List displayed by the Techstream, you can check values
of switches and sensors without removing any parts. Reading the Data List as the
first ...
Open in Occupant Classification ECU Battery Positive Line (B1794)
DESCRIPTION
DTC B1794 is set when a malfunction is detected in the occupant detection ECU.
DTC No.
DTC Detections Conditions
Trouble Areas
B1794
...
Other materials:
Short to +B in Outer Mirror Indicator(Slave) (C1AB1)
DESCRIPTION
This DTC is stored when the blind spot monitor sensor RH detects a +B short in
the blind spot monitor indicator RH.
DTC Code
DTC Detection Condition
Trouble Area
C1AB1
With the blind spot monitor main switch assembly (warni ...
Fender Panel Mudguard
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE
1. INSTALL FRONT FENDER MUDGUARD
(a) Install the fron ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the forward recognition camera
system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
