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:

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL UN-LOCK WARNING SWITCH ASSEMBLY (w/o Smart Key System) (a) Engage the 2 claws to install the un-lock warning switch assembly to the upper steering column bracket assembly. 2. INSTALL IGNITION SWITCH LOCK CYLINDER ASSEMBLY (w/o Smart Key System) (a) T ...

Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION: Be sure to read Precaution thoroughly before servicing (See page ). If the side airbag was deployed, replace the front seat airbag assembly LH, front seatback cover and front seat frame with adjuster assembly with the necessary part ...

Anti-glare inside rear view mirror
Glare from the headlights of vehicles behind can be reduced by using the following functions. Manual anti-glare inside rear view mirror Normal position Anti-glare position Auto anti-glare inside rear view mirror (type A) In automatic mode, sensors are used to detect the headlights of ...