Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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 listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to the system before inspecting the suspected areas below.
  • If the problem occurs in certain locations or times of day, the possibility of wave interference is high.
  • If a malfunction occurred after optional components were installed at the dealer, check if there is wave interference from the components.
Smart Key System (for Start Function)

Symptom

Suspected Area

See page

Power source mode does not change to on (IG) or on (ACC)

Refer to "Power Source Mode does not Change to ON (IG and ACC)"

Power source mode does not change to on (IG)

Refer to "Power Source Mode does not Change to ON (IG)"

Power source mode does not change to on (ACC)

Refer to "Power Source Mode does not Change to ON (ACC)"

Engine does not start

Refer to "Engine does not Start"

Customize Parameters
CUSTOMIZE PARAMETERS PROCEDURE 1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) HINT: The following items can be customized. NOTICE: When the customer requests a change in a function, ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION (a) Smart key system (for start function) data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When t ...

Other materials:

Antenna Coil Open / Short (B2784)
DESCRIPTION When an open or short circuit is detected in the transponder key amplifier coil built into the engine switch, the certification ECU (smart key ECU assembly) stores this DTC. This DTC is also stored as a past DTC. DTC Code DTC Detection Condition Tro ...

Front Radar Sensor Region Code Mismatch (C1A0A)
DESCRIPTION When the destination information in the millimeter wave radar sensor assembly and forward recognition camera do not match, DTC C1A0A is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL C1A0 ...

Rear differential lock system
The rear differential lock system is provided for use only when wheel spinning occurs in a ditch or on a slippery or rugged surface. The rear differential lock system is effective in case one of the rear wheels is spinning. Press the RR DIFF LOCK switch to lock the rear differential. At thi ...

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