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

Toyota Tacoma (2015-2018) Service Manual / Vf2cm Transfer / 4wd Control Switch / 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 ). Then check the combination meter (See page 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:

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Open in One Side of Bus 5 Branch Line
DESCRIPTION When the CAN bus main lines are normal (no open, short to ground, short to +B or short between lines) and there is an ECU or sensor on the "Communication Bus Check" screen that is indicated as not communicating or whose connection status on the "Communication Bus Ch ...

Terminals Of Ecm
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