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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> ADAS Control Unit (DTC/Circuit Diagnosis) (1 Of 2) >> DTC C1A13: Stop Lamp Relay >> ADAS Control Unit >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detection condition

C1A13

23

STOP LAMP RLY FIX

(Stop lamp relay fix)

1

Diagnosis condition

When engine is running

Signal (terminal)

--

Threshold

Stop lamp inactive state continues despite the outputting of an ADAS control unit stop lamp request signal

Diagnosis delay time

1 second or more

2

Diagnosis condition

When driving at the vehicle speed of 40 km/h (25 MPH) or more for approximately 20 seconds or more without the brake pedal depressed

Signal (terminal)

--

Threshold

The stop lamp remains ON under the following conditions:

  • Driving at 40 km/h (25 MPH) or more
  • No stop lamp drive signal output from ADAS control unit
  • No brake operation

Diagnosis delay time

60 seconds or more

24

1

Diagnosis condition

When engine is running

Signal (terminal)

--

Threshold

Stop lamp inactive state continues despite the outputting of an ADAS control unit stop lamp request signal

Diagnosis delay time

1 second or more

2

Diagnosis condition

When driving at the vehicle speed of 40 km/h (25 MPH) or more for approximately 20 seconds or more without the brake pedal depressed

Signal (terminal)

--

Threshold

The stop lamp remains ON under the following conditions:

  • Driving at 40 km/h (25 MPH) or more
  • No stop lamp drive signal output from ADAS control unit
  • No brake operation

Diagnosis delay time

60 seconds or more