Toyota 4Runner: Inspection

Toyota 4Runner Service Manual / Vehicle Exterior / Lighting (ext) / Headlight Dimmer Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

(a) Inspect the light control switch.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
20 (H) - 12 (EL)	Light control switch off	10 kΩ or higher
18 (T) - 12 (EL)
19 (A) - 12 (EL)
19 (A) - 12 (EL)	Light control switch auto	Below 1 Ω
18 (T) - 12 (EL)	Light control switch tail	Below 1 Ω
18 (T) - 12 (EL)	Light control switch head	Below 1 Ω
20 (H) - 12 (EL)	Light control switch head	Below 1 Ω

(b) Inspect the headlight dimmer switch.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
11 (HU) - 12 (EL)	Headlight dimmer switch flash	Below 1 Ω
17 (HF) - 12 (EL)	Headlight dimmer switch flash	Below 1 Ω
11 (HU) - 12 (EL)	Headlight dimmer switch hi beam	Below 1 Ω

HINT:

Perform the flash and high beam inspection with the light control switch set to head.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
13 (TR) - 12 (EL)	Turn signal switch right turn	Below 1 Ω
13 (TR) - 12 (EL)	Turn signal switch right lane change	Below 1 Ω
13 (TR) - 12 (EL)	Turn signal switch neutral	10 kΩ or higher
15 (TL) - 12 (EL)	Turn signal switch neutral	10 kΩ or higher
15 (TL) - 12 (EL)	Turn signal switch left lane change	Below 1 Ω
15 (TL) - 12 (EL)	Turn signal switch left turn	Below 1 Ω

(d) Inspect the fog light switch.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
4 (BFG) - 3 (LFG)	Fog light switch off	10 kΩ or higher
4 (BFG) - 3 (LFG)	Front fog light switch on	Below 1 Ω

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

Text in Illustration

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

Removal

REMOVAL PROCEDURE 1. REMOVE SPIRAL CABLE SUB-ASSEMBLY (a) Remove the spiral cable sub-assembly (See page ). 2. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY 3. REMOVE HEADLIGHT DIMMER SWITCH ASSEM ...

Installation

INSTALLATION PROCEDURE 1. INSTALL HEADLIGHT DIMMER SWITCH ASSEMBLY (a) Install the headlight dimmer switch to the steering column, making sure that the stopper protrusions and cutout ...

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