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2008 - MX-5 - Body and Accessories

DRL CONTROL MODULE INSPECTION

1. Connect the connector to the DRL control module.
2. Connect the negative battery cable.
3. Measure the voltage at the DRL control module using voltmeter.

Terminal Voltage Table (Reference)



Terminal

Signal name

Connected to

Test condition

Voltage (V)

Inspection item(s)

1A

Power supply

DRL 15 A fuse

Under any condition

B+

  • DRL 15 A fuse

  • Related wiring harness

1B

Parking brake lever pulled/released

Parking brake switch

Parking brake lever pulled

1.0 or less

Parking brake lever released

B+

1I

IG1

METER 15 A fuse

Turn the ignition switch to the ON position.

B+

Turn the ignition switch to the LOCK position.

1.0 or less

1K

High-beam on/off

Light switch

Turn the ignition switch to the ON position.

Dimmer switch at HI

1.0 or less

Dimmer switch at LO

B+

1L

Front fog light switch ON/OFF

Front fog light switch

Light switch at 2nd position

Front fog light switch is on.

1.0 or less

Front fog light switch is off.

B+

1M

Flash-to-pass

Light switch

Turn the ignition switch to the ON position.

Flash-to-pass activated.

1.0 or less

Flash-to-pass not activated.

B+

1N

Front fog light relay operation

Front fog light relay

Light switch at 2nd position and dimmer switch at LO

Front fog light switch is on.

1.0 or less

  • FOG 15 A fuse

  • Front fog light relay

    (SeeRELAY INSPECTION.)

  • Related wiring harness

Front fog light switch is off.

B+

2A

Headlight (RH) operation (high-beam)

Headlight (high-beam)

Light switch at 2nd position

Dimmer switch at LO

1.0 or less

  • Headlight (RH)

  • Related wiring harness

Dimmer switch at HI

1.0 or less

2C

Headlight (LH) operation (high-beam)

Headlight (high-beam)

Light switch at 2nd position

Dimmer switch at LO

1.0 or less

  • Headlight (LH)

  • Related wiring harness

Dimmer switch at HI

B+

2D

Ground

GND

Under any condition

1.0 or less

GND

2E

Headlight (RH) operation (high-beam)

Headlight (high-beam)

Light switch at 2nd position

Dimmer switch at LO

1.0 or less

  • Headlight (RH)

  • Related wiring harness

Dimmer switch at HI

B+

2G

Power supply

DRL 15 A fuse

Under any condition

B+

  • DRL 15 A fuse

  • Related wiring harness




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