Toyota Tacoma Quiz
Lighting

Inspection

In this manual: Lighting
Introduction — 15Maintenance — 8Audio / Video — 94Garage Door Opener — 7Navigation / Multi Info Display — 84Park Assist / Monitoring — 86Brake — 50Brake Control / Dynamic Control Systems — 165Parking Brake — 52gr-fks Charging — 252gr-fks Cooling — 212gr-fks Emission Control — 132gr-fks Engine Control — 322gr-fks Engine Mechanical — 332gr-fks Exhaust — 92gr-fks Fuel — 422gr-fks Ignition — 62gr-fks Intake — 72gr-fks Lubrication — 152gr-fks Starting — 38Ac60e Automatic Transmission / Transaxle — 146Axle — 19Clutch — 20Cruise Control — 168Differential — 50Drive Shaft — 6Propeller Shaft — 23Rc62f Manual Transmission / Transaxle — 34Suspension — 22Tire And Wheel — 39Vf2cm Transfer — 44Can Communication — 45Multiplex Communication — 20Power Distribution — 5Power Steering — 29Steering Column — 29Air Conditioning — 108Door Lock — 88Engine Hood / Door — 16Engine Immobiliser — 47Exterior — 55Horn — 5Interior — 18Interior Panel — 8Lighting — 93Meter / Gauge / Display — 31Mirror — 22Other System — 24Pre-collision — 40Seat — 52Seat Belt — 40Sliding Roof — 26Supplemental Restraint Systems — 139Theft Deterrent — 20Window / Glass — 53Wiper / Washer — 24
~2min read
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)

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)

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)

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)

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)

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.

Test yourself

A quick Toyota Tacoma quiz: every answer comes with an explanation and a link to the manual page.