Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the causes of the problem symptom. 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.
Cruise Control System

Symptom

Suspected Area

See page

Main switch cannot be turned ON (Indicator light on the combination meter does not come on)

Cruise Control Switch Circuit

Cruise Main Indicator Light Circuit

ECM

Desired speed cannot be set (Indicator light on the combination meter comes on when the main switch is turned ON, but goes off when operating the "SET" function)

Cruise Control Switch Circuit

ECM

Desired speed cannot be set (Indicator light on the combination comes on when the main switch is turned ON and it remains ON, while operating the "SET" function)

Cruise Control Switch Circuit

Lighting System

Clutch Switch Circuit (for Manual Transmission)

Park/neutral Position Switch Circuit (for AC60E Automatic Transmission)

Park/neutral Position Switch Circuit (for AC60F Automatic Transmission)

Combination Meter System

ECM

While cruise control driving, the set speed is canceled (Indicator light remains ON)

Cruise Control Switch Circuit

Vehicle Speed Sensor Circuit

Lighting System

Cruise Main Indicator Light Circuit

Clutch Switch Circuit (for Manual Transmission)

Park/neutral Position Switch Circuit (for AC60E Automatic Transmission)

Park/neutral Position Switch Circuit (for AC60F Automatic Transmission)

ECM

Hunting occurs (Speed is not constant)

Vehicle Speed Sensor Circuit

ECM

Speed setting cannot be canceled ("CANCEL" function failure only)

Cruise Control Switch Circuit

ECM

DTC is not output, or is output when should not be

TC and CG Terminal Circuit

ECM

Cruise Main indicator light does not come on

Cruise Control Switch Circuit

Cruise Main Indicator Light Circuit

ECM

Combination Meter Assembly

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the cruise control system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGH ...

Road Test
ROAD TEST HINT: 'SET' and '-', 'RES' and '+', 'ON-OFF' functions share the same switch. Operate the cruise control main switch according to the directions i ...

Other materials:

Automatic Disconnecting Differential Motor Limit Switch Circuit (P17A4)
DESCRIPTION When the A.D.D. actuator switches between 2WD and 4WD, the DL1 and DL2 terminals of the limit switch and ADD terminal of the A.D.D. position switch change to one of the following ON/OFF combinations listed in the table below. Terminal In 2WD Switchi ...

Operation Check
OPERATION CHECK 1. INSPECT INTERIOR LIGHT CONTROL OPERATION NOTICE: Perform this inspection with the customize parameters at the default settings. The interior light control illuminates the lights below. Engine Switch Illumination*1 Transponder Key Coil (Ignition Key Cylinder Light)* ...

AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION This DTC is stored when a video or audio signal is interrupted due to battery voltage input to the radio and display receiver assembly dropping temporarily. DTC Code DTC Detection Condition Trouble Area B158F A video or aud ...

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