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:

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 ...

Open in Bus 3 Main Bus Line
DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Detection Item Trouble Area Resistance between term ...

If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes stuck in mud, dirt, or snow. Stop the engine. Set the parking brake and put the shift lever in P (vehicles with an automatic transmission) or N (vehicles with a manual transmission). Remove the mud, snow, or sand f ...

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