Mazda MX-5 NA silhouetteMX-5 NA

RELAY

T-18prose procedure

DRL Unit is for Canada vehicles.

DRL UNIT

Inspection

Voltage test

DRL Unit Voltage Test

  1. 1
    Apply 12V to terminal c, and measure the voltage at terminals d and k.
    DRL unit with battery applying 12V to terminal c; voltmeter measuring at terminals d and k.
    05U0TX-026
  2. 2
    If not as specified, replace the DRL unit.
  3. 3
    Remove the 12V from terminal c.
  4. 4
    Apply 12V to terminals f and h, and measure the voltage at terminals d and k.
    DRL unit with 12V applied to terminals f and h; voltmeter measuring at terminals d and k (test points k, h, f labelled).
    05U0TX-027
  5. 5
    If not as specified, replace the DRL unit.
  6. 6
    Remove the 12V from terminals f and h.
  7. 7
    Ground terminal b, and measure the voltage at terminals d and k.
    DRL unit with terminal b grounded; voltmeter measuring at terminals d and k.
    05U0TX-028
  8. 8
    If not as specified, replace the DRL unit.

Voltage test — Step 1 (12V to terminal c)

d
Voltage12V
k
Voltage12V

Voltage test — Step 4 (12V to terminals f and h)

d
Voltage12V
k
Voltage12V

Voltage test — Step 7 (terminal b grounded)

d
Voltage12V
k
Voltage12V

Continuity test

DRL Unit Continuity Test

  1. 1
    Check for continuity between terminals of the DRL unit.
    DRL unit with ohmmeter checking continuity between terminals d-f and h-k.
    05U0TX-274
  2. 2
    If not as specified, replace the DRL unit.

Continuity test

d—f
ContinuityYes
h—k
ContinuityYes

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