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Problem Symptoms Table

  1. Headlight system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    One side LO-beam headlight does not illuminate 1. H-LP RL fuse or H-LP LL fuse -
    2. Bulb -
    3. Harness or connector -
    4. Power distributor (Engine room J/B) -
    Both left and right LO-beam headlights do not illuminate 1. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    2. Headlight relay circuit HEADLIGHT RELAY CIRCUIT 
    3. Main body ECU (Instrument panel J/B) -
    One side HI-beam headlight does not illuminate 1. H-LP RH fuse or H-LP LH fuse -
    2. Bulb -
    3. Harness or connector -
    4. Power distributor (Engine room J/B) -
    Both left and right HI-beam headlights do not illuminate 1. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    Headlight (HI-BEAM) circuit HEADLIGHT (HI-BEAM) CIRCUIT 
    3. Main body ECU (Instrument panel J/B) -
    "HIGH FLASH" (Passing) does not illuminate 1. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    2. Main body ECU (Instrument panel J/B) -
    LO-beam headlights or HI-beam headlights do not go off 1. Headlight dimmer switch assembly HEADLIGHT DIMMER SWITCH 
    2. Power distributor (Engine room J/B) -
    3. Harness or connector -
    4. Main body ECU (Instrument panel J/B) -
  2. Daytime running light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Daytime running light system does not operate 1. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    2. Parking brake switch circuit PARKING BRAKE SWITCH CIRCUIT 
    3. Power distributor (Engine room J/B) -
    4. Main body ECU (Instrument panel J/B) -
    5. ECM -
  3. Taillight system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Front parking light does not illuminate 1. Bulb -
    2. Harness or connector -
    Rear taillight does not illuminate 1. Bulb -
    2. Light failure sensor LIGHT FAILURE SENSOR 
    3. Harness or connector -
    License plate light does not illuminate 1. License plate light assembly -
    2. Harness or connector -
    Rear side marker light does not illuminate 1. Bulb -
    2. Harness or connector -
    Taillight system does not operate (Rear taillight, parking lights, rear side marker light, and license plate lights do not illuminate) 1. TAIL fuse -
    2. Taillight relay TAILLIGHT RELAY 
    3. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    4. Taillight relay circuit TAILLIGHT RELAY CIRCUIT 
    5. Main body ECU (Instrument panel J/B) -
  4. Stop light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Stop light system does not operate 1. Stop fuse -
    2. Stop light switch STOP LIGHT SWITCH 
    3. Stop light control relay (with dynamic radar cruise control) STOP LIGHT CONTROL RELAY (W/ DYNAMIC RADAR CRUISE CONTROL SYSTEM)
    4. Harness or connector -
    One side stop light does not illuminate 1. Bulb -
    2. Harness or connector -
    Both left and right stop lights do not illuminate 1. Bulb -
    2. Light failure sensor LIGHT FAILURE SENSOR 
    3. Harness or connector -
    Hi-mounted stop light does not illuminate 1. High mounted stop light assembly -
    2. Harness or connector -
  5. Front fog light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    One side fog light does not illuminate 1. Bulb -
    2. Harness or connector -
    Both left and right fog lights do not illuminate (Taillight system is normal) 1. FR FOG fuse -
    2. FOG relay FOG LIGHT RELAY 
    3. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    4. Front fog light circuit FRONT FOG LIGHT CIRCUIT 
    5. Main body ECU (Instrument panel J/B) -
  6. Turn signal and hazard warning system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Hazard warning lights do not operate (Turn signal lights are normal) 1. HAZ fuse -
    2. Hazard warning signal switch HAZARD WARNING SWITCH 
    3. Turn signal flasher assembly TURN SIGNAL FLASHER ASSEMBLY 
    4. Harness or connector -
    Turn signal lights do not operate (Hazard warning lights are normal) 1. GAUGE No. 1 fuse -
    2. Headlight dimmer switch assembly (Turn signal switch) HEADLIGHT DIMMER SWITCH 
    3. Turn signal flasher assembly TURN SIGNAL FLASHER ASSEMBLY 
    4. Harness or connector -
    "Hazard" and "Turn" do not operate 1. Turn signal flasher assembly TURN SIGNAL FLASHER ASSEMBLY 
    2. Hazard warning signal switch HAZARD WARNING SWITCH 
    3. Headlight dimmer switch assembly (Turn signal switch) HEADLIGHT DIMMER SWITCH 
    4. Harness or connector -
    Turn signal lights do not operate in one direction 1. Headlight dimmer switch assembly (Turn signal switch) HEADLIGHT DIMMER SWITCH 
    2. Turn signal flasher assembly TURN SIGNAL FLASHER ASSEMBLY 
    3. Harness or connector -
    Only one bulb does not operate 1. Bulb -
    2. Harness or connector -
  7. Back-up light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    One side back-up light does not illuminate 1. Bulb -
    2. Harness or connector -
    Both left and right back-up lights do not illuminate 1. GAUGE No. 1 fuse -
    2. Park/Neutral position switch INSPECTION
    3. Harness or connector -
  8. Illuminated entry system (Interior light control): 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Only interior light does not illuminate 1. Personal light assembly PERSONAL LIGHT ASSEMBLY 
    Only rear seat illumination does not come on 1. Rear room light assembly REAR ROOM LIGHT ASSEMBLY 
    2. Harness or connector -
    Only front seat illumination does not come on 1. Personal light assembly PERSONAL LIGHT ASSEMBLY 
    Only rear door courtesy light does not illuminate 1. Bulb -
    2. Rear door courtesy light assembly DOOR COURTESY LIGHT 
    3. Harness or connector -
    Engine switch illumination does not illuminate 1. Engine switch illumination circuit ENGINE SWITCH ILLUMINATION CIRCUIT 
    2. Main body ECU (Instrument panel J/B) -
    Interior light and seat illumination do not illuminate 1. Interior light circuit INTERIOR LIGHT CIRCUIT 
    2. Main body ECU (Instrument panel J/B) -
    Interior light control (Interior light, seat illumination and engine switch illumination) does not operate normally 1. Door courtesy switch circuit DOOR COURTESY SWITCH CIRCUIT 
    2. Door lock position switch circuit DOOR LOCK POSITION CIRCUIT 
    3. Interior light circuit INTERIOR LIGHT CIRCUIT 
    4. Engine switch illumination ENGINE SWITCH ILLUMINATION CIRCUIT 
    5. Engine switch REMOVAL
    6. Harness or connector -
    7. Main body ECU (Instrument panel J/B) -
  9. Illuminated entry system (Footwell illumination control): 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    One side footwell illumination does not come on 1. Footwell light FOOTWELL LIGHT 
    2. Harness or connector -
    Footwell illumination control does not operate normally (Interior light control is normal) 1. Footwell light circuit FOOTWELL LIGHT CIRCUIT 
    2. Main body ECU -
  10. Illuminated entry system (Door mirror foot light control): 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    One side door mirror foot light does not come on 1. Door mirror foot light DOOR MIRROR FOOT LIGHT 
    2. Harness or connector -
    Door mirror foot light control does not operate normally (Footwell illumination control is normal) 1. Door mirror foot light circuit DOOR MIRROR FOOT LIGHT CIRCUIT 
    2. Mirror ECU power source circuit POWER SOURCE CIRCUIT
    3. Mirror ECU -
    4. Main body ECU -
  11. Vanity light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Vanity light does not illuminate 1. Bulb -
    2. Vanity light assembly VANITY LIGHT 
    3. Visor assembly (Vanity light switch) -
    4. Harness or connector -
  12. Luggage compartment light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Luggage compartment light does not illuminate 1. Luggage compartment light LUGGAGE COMPARTMENT ROOM LIGHT 
    2. Luggage compartment door lock assembly (Door courtesy switch) BACK DOOR COURTESY 
    3. Harness or connector -
  13. Glove box light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Glove box light does not illuminate 1. Glove box light assembly GLOVE BOX LIGHT 
    2. Harness or connector -
  14. Door courtesy light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Driver side door courtesy light does not illuminate 1. Bulb -
    2. Driver side door courtesy light assembly DOOR COURTESY LIGHT 
    3. Driver side door courtesy switch DOOR COURTESY LIGHT 
    4. Harness or connector -
    Front passenger side door courtesy light does not illuminate 1. Bulb -
    2. Front passenger side door courtesy light assembly DOOR COURTESY LIGHT 
    3. Front passenger side door courtesy switch FRONT DOOR COURTESY SWITCH 
    4. Harness or connector -
    Rear LH door courtesy light does not illuminate 1. Bulb -
    2. Rear LH door courtesy light assembly DOOR COURTESY LIGHT 
    3. Rear LH door courtesy switch BACK DOOR COURTESY 
    4. Harness or connector -
    Rear RH door courtesy light does not illuminate 1. Bulb -
    2. Rear RH door courtesy light assembly DOOR COURTESY LIGHT 
    3. Rear RH door courtesy switch BACK DOOR COURTESY 
    4. Harness or connector -
  15. Personal light system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Front personal lights do not illuminate 1. Personal light assembly PERSONAL LIGHT ASSEMBLY 
    2. Harness or connector -
    Rear LH personal lights do not illuminate 1. Rear LH room light assembly REAR ROOM LIGHT ASSEMBLY 
    2. Harness or connector -
    Rear RH personal lights do not illuminate 1. Rear RH room light assembly REAR ROOM LIGHT ASSEMBLY 
    2. Harness or connector -
  16. Automatic light control system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Automatic light control system does not operate normally 1. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    2. Automatic light control sensor circuit DTC B1244 Light Sensor Circuit Malfunction 
    3. Engine switch REMOVAL
    4. Main body ECU (Instrument panel J/B) -
  17. Light auto turn off system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Light auto turn off system does not operate normally 1. Light control switch circuit LIGHT CONTROL SWITCH CIRCUIT 
    2. Door courtesy switch circuit DOOR COURTESY SWITCH CIRCUIT 
    3. Door lock position switch circuit DOOR LOCK POSITION CIRCUIT 
    4. Main body ECU (Instrument panel J/B) -
  18. Battery saving system: 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    Battery saving function does not operate 1. Door courtesy switch circuit DOOR COURTESY SWITCH CIRCUIT 
    2. Engine switch REMOVAL
    3. Main body ECU (Instrument panel J/B) -
  19. AFS 
    PROBLEM SYMPTOMS

    Symptom Suspected Area See
    AFS does not operate. 1. Check DTC -
    1. Power source circuit AFS ECU Power Source Circuit 
    2. AFS OFF switch circuit AFS OFF Switch Circuit 
    3. AFS ECU -
    AFS OFF indicator light does not come on when turning the engine switch on (IG) 1. AFS ECU -
    2. Combination meter -
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