Inspect Headlight Dimmer Switch

(a) Check the resistance of the light control switch. (1) Using an ohmmeter, measure the resistance and check the results in accordance with the value(s) in the table below. Standard Resistance

Tester Connection

Condition

Specified Condition

10 - 11 - 12 - 13

OFF

10 kQ or higher

10 - 13

TAIL

Below 1 Q

10 - 13

HEAD

Below 1 Q

11 - 12

HEAD

Below 1 Q

If the result is not as specified, replace the headlight dimmer switch. (b) Check the resistance of the headlight dimmer switch.

(1) Using an ohmmeter, measure the resistance and check the results in accordance with the value(s) in the table below. Standard Resistance

Tester Connection

Condition

Specified Condition

9 - 11

FLASH

Below 1 Q

8 - 11

LOW BEAM

Below 1 Q

9 - 11

HI BEAM

Below 1 Q

If the result is not as specified, replace the headlight dimmer switch. (c) Check the resistance of the turn signal switch.

(1) Using an ohmmeter, measure the resistance and check the results in accordance with the value(s) in the table below. Standard Resistance

Tester Connection

Condition

Specified Condition

S - 7

Right turn

Below 1 Q

5 - S - 7

Neutral

10 kQ or higher

5 - 7

Left turn

Below 1 Q

If the result is not as specified, replace the headlight dimmer switch. (d) w/ Front fog light:

Check the resistance of the front fog light switch.

(1) Using an ohmmeter, measure the resistance and check the results in accordance with the value(s) in the table below. Standard Resistance

Tester Connection

Condition

Specified Condition

3 - 4

OFF

10 kQ or higher

3 - 4

Front fog light switch ON

Below 1 Q

Toyota Yaris Dimmer

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

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