LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Driver Assistance System (ADAS Control Unit) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC C1A03-62: Vehicle Speed Sensor >> ADAS Control Unit 2 >> DTC Description >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

DTC CONSULT screen terms DTC detection condition
(Trouble diagnosis content) [Malfunction type]
C1A03 62 VHCL SPEED SE CIRC
(Vehicle speed sensor circuit)
[SIGNAL COMPARE ERROR] Diagnosis condition
  • When engine is running
  • When LDP system is ON
Signal (terminal) CAN communication signal
Threshold If the vehicle speed signal (wheel speed) from ABS actuator and electric unit (control unit) and the A/T vehicle speed sensor signal (output shaft revolution signal) from TCM, received by the ADAS control unit 2 via CAN communication (via ADAS control unit), are inconsistent
Diagnosis delay time 1 second or less