LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System (Except Hybrid) >> Symptom Diagnosis >> Exterior Lighting System Symptoms >> Symptom Table

Symptom Table

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

Symptom

Possible cause

Inspection item

Headlamp (HI) is not turned ON

One side

  • Fuse
  • Headlamp (HI) power supply circuit
  • Front combination lamp
    • LED [Headlamp (HI)]
    • LED headlamp control module
    • Harness
  • IPDM E/R

Headlamp (HI) circuit

Refer to Component Function Check .

Both sides

Symptom diagnosis

"BOTH SIDE HEADLAMPS (HI) ARE NOT TURNED ON"

Refer to Diagnosis Procedure .

High beam indicator lamp is not turned ON

[Headlamp (HI) is turned ON]

Combination meter

  • Combination meter

    Data monitor "HI-BEAM IND"

  • BCM (HEAD LAMP)

    Active test "HEAD LAMP"

Headlamp (LO) is not turned ON

One side

  • Fuse
  • Headlamp (LO) power supply circuit
  • Front combination lamp
    • LED [Headlamp (LO)]
    • LED headlamp control module
    • Harness
  • IPDM E/R

Headlamp (LO) circuit

Refer to Component Function Check .

Both sides

Symptom diagnosis

"BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON"

Refer to Diagnosis Procedure .

Headlamp (HI) and (LO) is not turned ON

  • Headlamp ground circuit
  • Front combination lamp
    • LED headlamp control module
    • Harness

LED headlamp

Refer to Diagnosis Procedure .

Headlamp warning remains ON

[Headlamp (LO) is turned ON]

  • Headlamp warning signal circuit
  • Front combination lamp
    • LED headlamp control module
    • Harness
  • Combination meter

Headlamp warning

Refer to Component Function Check .

Each lamp is not turned ON/OFF with lighting switch AUTO

  • Combination switch input/output signal circuit
  • Combination switch
  • BCM

Combination switch

Refer to Symptom Table .

  • Optical sensor power supply/ground/signal circuit
  • Optical sensor
  • BCM

Optical sensor

Refer to Component Function Check .

Parking lamp is not turned ON

  • Parking lamp power supply/ground circuit
  • Front combination lamp
    • LED (Parking lamp)
    • Control circuit
    • Harness
  • IPDM E/R

Parking lamp circuit

Refer to Component Function Check .

Front side marker lamp is not turned ON

(Parking lamp is turned ON)

  • Front combination lamp
    • LED (Side marker lamp)
    • Control circuit
    • Harness

Replace front combination lamp

Refer to Removal and Installation .

Rear side marker lamp is not turned ON

[Tail lamp (body side) is turned ON]

  • Rear combination lamp (Body side)
    • LED (Side marker lamp)
    • Harness

Replace rear combination lamp (Body side)

Refer to Removal and Installation .

Tail lamp is not turned ON

  • Fuse
  • Tail lamp power supply/ground circuit
  • Rear combination lamp (Body side / Trunk lid side)
    • LED (Tail lamp)
  • IPDM E/R

Tail lamp circuit

Refer to Component Function Check .

License plate lamp is not turned ON

  • License plate lamp power supply/ground circuit
  • License plate lamp bulb
  • License plate lamp

License plate lamp circuit

Refer to Component Function Check .

Parking lamp, license plate lamp, side marker lamp and tail lamp are not turned ON

Symptom diagnosis

"PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS ARE NOT TURNED ON"

Refer to Diagnosis Procedure .

Position lamp indicator lamp is not turned ON

(Parking lamp, license plate lamp, side marker lamp and tail lamp are turned ON)

Combination meter

  • Combination meter

    Data monitor "LIGHT IND"

  • BCM (HEAD LAMP)

    Active test "TAIL LAMP"

Daytime running light is not turned ON

  • Fuse
  • Daytime running light relay power supply/control signal circuit
  • Daytime running light relay
  • Daytime running light power supply/ground circuit
  • Front combination lamp
    • LED (Daytime running light)
    • Control circuit
    • Harness
  • IPDM E/R
  • BCM
  • ECM
  • Combination meter
  • Daytime running light circuit

    Refer to Component Function Check .

  • BCM (HEAD LAMP)

    Data monitor "ENGINE STATE"

  • Combination meter

    Data monitor "PKB SW"

Front fog lamp is not turned ON

One side

  • Front fog lamp power supply/ground circuit
  • Front fog lamp
  • IPDM E/R

Front fog lamp circuit

Refer to Component Function Check .

Both sides

Symptom diagnosis

"BOTH SIDE FRONT FOG LAMPS ARE NOT TURNED ON"

Refer to Diagnosis Procedure .

Front fog lamp indicator lamp is not turned ON

(Front fog lamp is turned ON)

Combination meter

  • Combination meter

    Data monitor "FR FOG IND"

  • BCM (HEAD LAMP)

    Active test "FR FOG LAMP"

Turn signal lamp does not blink

Indicator lamp is normal

(Applicable side performs high flasher activation)

  • Front turn signal lamp
    • Front turn signal lamp power supply/ground circuit
    • Front turn signal lamp
    • BCM
  • Side turn signal lamp
    • Side turn signal lamp power supply/ground circuit
    • Side turn signal lamp
    • BCM
  • Rear turn signal lamp
    • Rear turn signal lamp power supply/ground circuit
    • Rear turn signal lamp bulb
    • Rear turn signal lamp bulb socket/harness
    • BCM

Turn signal lamp circuit

Refer to Component Function Check .

Indicator lamp is included

  • Combination switch input/output signal circuit
  • Combination switch
  • BCM

Combination switch

Refer to Symptom Table .

Turn signal indicator lamp does not blink

(Turn signal lamp is normal)

One side

Combination meter

--

Both sides

(Always)

  • Turn indicator signal
  • BCM
  • Combination meter
  • Combination meter

    Data monitor "TURN IND"

  • BCM (FLASHER)

    Active test "FLASHER"

Both sides

(Only when activating hazard warning lamp with ignition switch OFF)

  • Combination meter power supply/ground circuit
  • Combination meter

Combination meter

Power supply and ground circuit

Refer to Diagnosis Procedure .

  • Hazard warning lamp does not activate

    (Turn signal is normal)

  • Hazard warning lamp continues activating
  • Hazard switch signal/ground circuit
  • Multifunction switch (Hazard switch)
  • BCM

Hazard switch

Refer to Component Function Check .

Headlamp auto aiming does not activate

(AFS is normal)

  • Headlamp aiming motor power supply/ground/drive signal circuit
  • Front combination lamp (Headlamp aiming motor)
  • AFS Control Unit

Headlamp levelizer circuit

Refer to Component Function Check .

AFS OFF indicator lamp is not turned ON

  • AFS OFF indicator lamp signal
  • AFS Control Unit
  • Combination meter

Combination meter

Data monitor "AFS OFF IND"