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Problem Symptoms Table

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Use the table below to help determine the causes of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

HEADLIGHT AND TAILLIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
Neither headlight comes on. (w/o Daytime running light system) HARNESS OR CONNECTOR 
HEADLIGHT RELAY CIRCUIT 
Neither headlight comes on. (w/ Daytime running light system) HARNESS OR CONNECTOR 
DRL RELAY CIRCUIT 
HEADLIGHT SIGNAL CIRCUIT 
HEADLIGHT RELAY CIRCUIT 
Only one headlight comes on. BULB 
HARNESS OR CONNECTOR 
HEADLIGHT SIGNAL CIRCUIT 
HEADLIGHT RELAY CIRCUIT 
LO-Beam lights do not come on. BULB 
HARNESS OR CONNECTOR 
HEADLIGHT SIGNAL CIRCUIT 
HEADLIGHT RELAY CIRCUIT 
HI-Beam lights do not come on. BULB 
HARNESS OR CONNECTOR 
HEADLIGHT SIGNAL CIRCUIT 
HEADLIGHT RELAY CIRCUIT 
Flash does not come on. (Headlights and Hi-beam normal) HARNESS OR CONNECTOR 
HEADLIGHT SIGNAL CIRCUIT 
HEADLIGHT RELAY CIRCUIT 
No taillights come on. (Headlights normal) HARNESS OR CONNECTOR 
TAILLIGHT CIRCUIT 
Only one taillight comes on. BULB 
HARNESS OR CONNECTOR 
TAILLIGHT CIRCUIT 

FOG LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
Front fog lights do not come on when light control switch in TAIL or HEAD position. (Headlights normal) HARNESS OR CONNECTOR 
FRONT FOG LIGHT CIRCUIT 
Only one fog light comes on. BULB 
HARNESS OR CONNECTOR 
FRONT FOG LIGHT CIRCUIT 

BACK-UP LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
No back-up lights do not come on. HARNESS OR CONNECTOR 
BACK UP LIGHT CIRCUIT 
Only one Buck-up light comes on. BULB 
HARNESS OR CONNECTOR 
BACK UP LIGHT CIRCUIT 

STOP LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
No stop lights come on. HARNESS OR CONNECTOR 
STOP LIGHT SWITCH CIRCUIT 
Only one stop light does not come on. BULB 
HARNESS OR CONNECTOR 
STOP LIGHT SWITCH CIRCUIT 
High mounted stop light does not come on. BULB 
HARNESS OR CONNECTOR 
STOP LIGHT SWITCH CIRCUIT 

TURN SIGNAL LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
No turn signal lights come on. HARNESS OR CONNECTOR 
TURN SIGNAL LIGHT CIRCUIT 
Only one turn signal light does not come on. BULB 
HARNESS OR CONNECTOR 
TURN SIGNAL LIGHT CIRCUIT 

HAZARD WARNING LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
Hazard warning light does not come on. (Turn signal light normal) HARNESS OR CONNECTOR 
HAZARD WARNING SWITCH CIRCUIT 

LICENSE PLATE LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
License plate light does not come on. BULB 
TAILLIGHT CIRCUIT 

MAP LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
Map light does not come on. DOME fuse
MAP LIGHT ASSEMBLY 
Harness or connector

ROOM LIGHT SYSTEM: 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area
Room light assembly does not come on. HARNESS OR CONNECTOR 
ROOM LIGHT ASSEMBLY 
Bulb
ILLUMINATION CIRCUIT