Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT INDICATOR LIGHT

(a) Inspect the 4HI Indicator Light:

(1) Start the engine.

(2) Change the 4WD control switch from 2WD to 4H.

(3) Check the 4HI indicator light.

OK:

The 4HI indicator light comes on or the 4HI indicator light comes on after it is blinking.

If the result is not as specified, inspect the switch, four wheel drive control ECU and transfer shift actuator assembly. If there is a malfunction, inspect the switch, ECU, transfer shift actuator and A.D.D. actuator. If the system is normal, there may be a malfunction in the CAN communication system or combination meter. In this case, first check the CAN communication system (See page the combination meter (See page the combination meter (See page ). Then check the combination meter (See page ) and touch select 2- 4 and high-low system (See page  ). ) and touch select 2- 4 and high-low system (See page (b) Inspect the 4LO Indicator Light: ).

(b) Inspect the 4LO Indicator Light:

(1) Start the engine.

(2) Move the shift lever to N.

(3) Change the 4WD control switch from 2WD to 4H. Then change it from 4H to 4L after the 4HI indicator light illuminates (after 4H switch completion).

(4) Check the 4LO indicator light.

OK:

The 4LO indicator light comes on or the 4LO indicator light comes on after it is blinking.

If there is a malfunction, inspect the switch, ECU and actuator. If the system is normal, the combination meter may be malfunctioning.

2. INSPECT TRANSFER POSITION SWITCH

(a) Remove the transfer position switch with its connector still connected (See page ).

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F15-2 (2-4) - Body ground

Ignition switch ON

2WD position

Below 1 V

Ignition switch ON

4H position

Below 1.5 V

Ignition switch ON

4L position

10.5 to 14 V

F15-3 (LO) - Body ground

Ignition switch ON

2WD position

10.5 to 14 V

Ignition switch ON

4H position

Below 1.5 V

Ignition switch ON

4L position

Below 1 V

Text in Illustration

*a

Component with harness connected

(Transfer Position Switch)

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ...

Removal
REMOVAL PROCEDURE 1. REMOVE AIR CONDITIONING CONTROL ASSEMBLY (for Automatic Air Conditioning System) (See page ) 2. REMOVE INTEGRATION PANEL SUB-ASSEMBLY (for Manual Cooler System) (See page ...

Other materials:

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 sy ...

System Description
SYSTEM DESCRIPTION 1. DESCRIPTION The differential system (w/ Differential Lock) directly connects the rear left and right wheels so that even if one wheel slips while driving where drive torque transmission is difficult (such as on sand), the drive torque of the other wheel is ...

Inspection
INSPECTION PROCEDURE 1. INSPECT REAR SPEAKER ASSEMBLY (w/o Amplifier Box Speaker Assembly) (a) Measure the resistance according to the value(s) in the table below. Standard resistance: Tester Connection Condition Specified Condition 1 - 2 ...

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