Toyota Tacoma (2015-2018) Service Manual: Inspection

Toyota Tacoma (2015-2018) Service Manual / Lighting / Headlight Dimmer Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

(a) Check the resistance.

(1) Measure the resistance according to the value(s) in the table below.

Text in Illustration

*a	Component without harness connected (Headlight Dimmer Switch Assembly)

Standard Resistance:

Light Control Switch (w/o DRL OFF function)

Tester Connection	Switch Condition	Specified Condition
18 (T) - 15 (EL)	Light control switch OFF	10 kΩ or higher
19 (H) - 15 (EL)	Light control switch OFF	10 kΩ or higher
18 (T) - 15 (EL)	Light control switch in tail position	Below 1 Ω
18 (T) - 15 (EL)	Light control switch in head position	Below 1 Ω
19 (H) - 15 (EL)	Light control switch in head position	Below 1 Ω

Light Control Switch (w/ DRL OFF function)

Tester Connection	Switch Condition	Specified Condition
18 (T) - 15 (EL)	Light control switch DRL-OFF	10 kΩ or higher
19 (H) - 15 (EL)		10 kΩ or higher
20 (A) - 15 (EL)		10 kΩ or higher
18 (T) - 15 (EL)	Light control switch in tail position	Below 1 Ω
18 (T) - 15 (EL)	Light control switch in head position	Below 1 Ω
19 (H) - 15 (EL)	Light control switch in head position	Below 1 Ω
20 (A) - 15 (EL)	Light control switch in AUTO position	Below 1 Ω
20 (A) - 15 (EL)	Light control switch in DRL position	Below 1 Ω

Dimmer Switch

Tester Connection	Switch Condition	Specified Condition
16 (HL) - 15 (EL)	Dimmer switch in low position	Below 1 Ω
14 (HU) - 15 (EL)	Dimmer switch in low position	10 kΩ or higher
14 (HU) - 15 (EL)	Dimmer switch in high position	Below 1 Ω
14 (HU) - 15 (EL)	Dimmer switch in high flash position	Below 1 Ω
17 (HF) - 15 (EL)	Dimmer switch in high flash position	Below 1 Ω

Turn Signal Switch

Tester Connection	Switch Condition	Specified Condition
12 (TR) - 15 (EL)	Neutral	10 kΩ or higher
11 (TL) - 15 (EL)		10 kΩ or higher
13 (CR) - 15 (EL)		10 kΩ or higher
12 (TR) - 15 (EL)	Right turn	Below 1 Ω
13 (CR) - 15 (EL)	Right turn fully	Below 1 Ω
11 (TL) - 15 (EL)	Left turn	Below 1 Ω
13 (CR) - 15 (EL)	Left turn fully	Below 1 Ω

Fog Light Switch

Tester Connection	Switch Condition	Specified Condition
9 (BFG) - 8 (LFG)	Fog light switch off	10 kΩ or higher
9 (BFG) - 8 (LFG)	Fog light switch in front position	Below 1 Ω

If the result is not as specified, replace the headlight dimmer switch assembly.

Removal

REMOVAL PROCEDURE 1. REMOVE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY (See page ) 2. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY 3. REMOVE HEADLIGHT DIMMER SWITCH ASSEMBLY (a) Disconnect ...

Installation

INSTALLATION PROCEDURE 1. INSTALL HEADLIGHT DIMMER SWITCH ASSEMBLY (a) Engage the 3 claws to install the headlight dimmer switch assembly. (b) Connect the connector. 2. INSTALL WINDSHIELD WIPER S ...

Other materials:

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT CAMSHAFT TIMING GEAR BOLT (a) Remove the camshaft timing oil control solenoid assembly (See page ). (b) Check that the plunger strokes when the plunger in the center of the camshaft timing gear bolt is pressed. Standard stroke: 4 ...

Lost Communication with Alternator Missing Message (P161A87)
DESCRIPTION The ECM communicates with the generator assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC. DTC No. DTC Detection Condition Trouble Area P161A87 Generator assembly or ECM commu ...

Removal
REMOVAL PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before p ...