LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Driver Assistance System - Lane Departure Warning & Lane Departure Prevention (LDW & LDP) (Symptom Diagnosis & Removal And Installation)) >> Symptom Diagnosis >> LDW & LDP System Symptoms >> Symptom Table

Symptom Table

WARNING: This page is about a different car, the 2016 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Perform the self-diagnosis with CONSULT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected.

Symptom Possible cause Inspection item/Refer to
Indicator/warning lamps do not illuminate when ignition switch OFF → ON. Lane departure warning lamp (Yellow) does not illuminate.
  • Lane departure warning lamp signal (CAN)
    • Unified meter and A/C amp.
    • Lane camera unit
  • Lane departure warning lamp

    (Combination meter)

  • LANE CAMERA Active test

    "LANE DEPARTURE W/L"

  • METER/M&A Data monitor

    "LANE W/L"

LDP ON indicator lamp (Green) does not illuminate.
  • LDP ON indicator lamp signal (CAN)
    • Unified meter and A/C amp.
    • Lane camera unit
  • LDP ON indicator lamp

    (Combination meter)

  • LANE CAMERA Active test

    "LDP ON IND"

  • METER/M&A Data monitor

    "LDP IND"

Warning systems ON indicator (on the warning systems switch) does not illuminate.
  • Harness between lane camera unit and warning systems switch.
  • Warning systems ON indicator

    (Warning systems switch)

  • Lane camera unit
Warning systems ON indicator circuit
COMPONENT FUNCTION CHECK
Lane departure warning lamp (Yellow) and LDP ON indicator lamp (Green) do not illuminate.
  • Combination meter
  • Unified meter and A/C amp.
  • Lane camera unit
-
All of indicator/warning lamps do not illuminate;
  • Lane departure warning lamp (Yellow)
  • LDP ON indicator lamp (Green)
  • Warning systems ON indicator
  • Power supply and ground circuit of lane camera unit
  • Lane camera unit
Power supply and ground circuit of lane camera unit
DIAGNOSIS PROCEDURE
LDW system is not activated.
(Indicator/warning lamps illuminate when ignition switch OFF → ON.)
Warning systems ON indicator is not turned ON ==> OFF when operating warning systems switch.
  • Harness between lane camera unit and warning systems switch.
  • Harness between warning systems switch and ground.
  • Lane camera unit
Warning systems switch circuit
COMPONENT FUNCTION CHECK
Lane departure warning buzzer is not sounding.
(Lane departure warning lamp is activated.)
  • Harness between the fuse and lane departure warning buzzer.
  • Harness between lane camera unit and lane departure warning buzzer.
  • Harness between lane departure warning buzzer and ground.
  • Lane departure warning buzzer
  • Lane camera unit
Lane departure warning buzzer circuit
COMPONENT FUNCTION CHECK
Lane departure warning lamp is not activated.
(Lane departure warning buzzer is sounding.)
Lane camera unit -
LDP system setting cannot be turned ON/OFF from the navigation screen.
  • LDP system setting is not selectable on the navigation screen.
  • LDP system setting differs from the one set at the previous driving.
  • ICC sensor integrated unit
  • AV control unit
  • Unified meter and A/C amp.
ICC Data monitor
"LDP SELECT"
LDP system is not activated.
(LDW system is functioning normally)
Indicator lamp is not turned ON ==> OFF when operating dynamic driver assistance switch.
  • Dynamic driver assistance switch

    (ICC steering switch)

  • ICC sensor integrated unit
  • Dynamic driver assistance switch

    (ICC steering switch)

  • ICC Data monitor

    "LDP SYSTEM ON"

Warning is functioning but yawing is not functioning. -
Yawing is functioning but warning is not functioning.
  • ABS actuator and electric unit (control unit)
  • Lane camera unit
-
Warning functions are not timely.

(Example)

  • Does not function when driving on lane markers.
  • Functions when driving in a lane.
  • Functions in a different position from the actual position.
  • Camera aiming adjustment
  • Lane camera unit
Camera aiming adjustment
DESCRIPTION 
Functions when changing the course in direction of the turn signal. Turn signal
  • BCM
  • Lane camera unit
LANE CAMERA Data monitor
"TURN SIGNAL"