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Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B22A0-18, B22A0-19, B22A0-46, B22A0-47, B22A0-49, B22A0-53: HUD Control Unit >> DTC Description >> DTC Detection Logic

DTC Detection Logic

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B22A0-18

HUD Control Unit

[CIRCUIT CURRENT BELOW THRESHOLD]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

B22A0-19

HUD Control Unit

[CIRCUIT CURRENT ABOVE THRESHOLD]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

B22A0-46

HUD Control Unit

[CALIBRATION / PARAMETER MEMORY FAILURE]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

B22A0-47

HUD Control Unit

[WATCHDOG / SAFETY μC FAILURE]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

B22A0-49

HUD Control Unit

[INTERNAL ELECTRONIC FAILURE]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

B22A0-53

HUD Control Unit

[DEACTIVATED]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more