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 this system before inspecting the suspected areas below.
Wireless Door Lock Control System

Symptom

Suspected Area

See page

Only wireless control function is inoperative

Proceed to "Only wireless control function is inoperative"

Only answer-back function does not operate normally

Proceed to "No answer-back"

Only automatic lock function does not operate normally

Perform the operation check

Key reminder warning system

Lighting system (front door courtesy light switch circuit)

Lighting system (rear door courtesy light switch circuit)

Main body ECU (multiplex network body ECU)

-

Only illuminated entry function does not operate

Perform the operation check

Lighting system

Main body ECU (multiplex network body ECU)

-

Only door ajar warning function does not operate

Perform the operation check

Lighting system (front door courtesy light switch circuit)

Lighting system (rear door courtesy light switch circuit)

Main body ECU (multiplex network body ECU)

-

Only panic alarm function does not operate

Perform operation check

Lighting system (int) (interior lights)

Lighting system (ext) (headlights, taillights, hazard lights)

Theft deterrent system (vehicle horn)*1

Horn system*2

Main body ECU (multiplex network body ECU)

-

  • *1: w/ Theft Deterrent System
  • *2: w/o Theft Deterrent System
Customize Parameters
CUSTOMIZE PARAMETERS PROCEDURE 1. CUSTOMIZE WIRELESS DOOR LOCK CONTROL SYSTEM HINT: The following items can be customized. NOTICE: When the customer requests a change in a function, firs ...

Registration
REGISTRATION CAUTION / NOTICE / HINT HINT: Register a new recognition code when replacing the door control transmitter module set sub-assembly or the door control receiver. Add mode ...

Other materials:

Open in Pump Motor Circuit (C1251)
DESCRIPTION The motor relay (semiconductor relay) is built into the master cylinder solenoid and drives the pump motor based on a signal from the skid control ECU (master cylinder solenoid). DTC No. DTC Detecting Condition Trouble Areas C1251 ...

Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION for Navigation Function: The navigation receiver assembly receives a vehicle speed signal from the combination meter assembly and sends the signal to navigation receiver assembly. for Automatic Sound Levelizer (ASL): This circuit is necessary for the Aut ...

4WD Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area 4WD Control ECU Communication Stop Mode Either condition is met: Communication stop for "Four Wheel Drive Control" is indicated on the "Communication Bus C ...

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