Toyota Tacoma (2015-2018) Service Manual: Utility
UTILITY
NOTICE:
If the forward recognition camera has been replaced due to a malfunction in the lane departure alert system, be sure to perform Recognition Camera/Target Position Memory and Optical Axis Learning. Otherwise all systems that use the forward recognition camera may be affected.
HINT:
Refer to Front Recognition Camera System for details of Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Diagnosis System
DIAGNOSIS SYSTEM
CHECK DLC3
(a) Check the DLC3.
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FUNCTION OF WARNING INDICATOR AND MESSAGE
(a) If the lane departure alert system is not functioning properly, the driver
is warned b ...
Other materials:
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
1. CHECK FOR INTERMITTENT PROBLEMS
HINT:
A momentary interruption (open circuit) in the connectors and/or wire harnesses
between the sensors and ECUs can be detected using the ECU Data List function of
the Techstream.
(a) Turn the ignition switch off.
(b) Con ...
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) The vehicle's ECU uses the ISO 9141-2 for communication protocol. The terminal
arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
Symbols (Terminal No.)
Terminal Description
Condition
...
Towing Tail Relay
Inspection
INSPECTION
PROCEDURE
1. INSPECT TOWING TAIL RELAY
(a) Check the resistance.
(1) Using an ohmmeter, measure the resistance between the terminals.
Standard:
Tester Connection
Specified Condition
3-5
10 kΩ or higher
...
