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Problem Symptoms Table

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

DOOR LOCK CONTROL 

PROBLEM SYMPTOMS TABLE - DOOR LOCK CONTROL

Symptom Suspected Area
Lock or unlock cannot be operated with door lock control switch.
  1. Door lock control switch circuit (Driver's) (Passenger's)
  2. Body ECU
Door key linked function does not operate.
  1. Door key lock and unlock switch circuit (Driver's) (Passenger's)
  2. Body ECU
Key confinement prevention function does not operate.
  1. Key unlock warning switch circuit
  2. Body ECU

THEFT DETERRENT SYSTEM 

PROBLEM SYMPTOMS TABLE - THEFT DETERRENT SYSTEM

Symptom Suspected Area
No alerting condition is operated. (The system cannot be set.)
  1. Security indicator circuit
  2. Key unlock warning switch circuit
  3. Courtesy switch circuit
  4. Door unlock detection switch circuit (Driver's) (Passenger's)
  5. Engine hood courtesy switch circuit
  6. Body ECU
Cannot be canceled when ignition switch is ON with a key.
  1. Key unlock warning switch circuit
  2. Ignition switch
  3. Body ECU
Some of the system does not operate. (Headlight does not light up.)
  1. Headlight relay circuit
  2. Body ECU
Taillight does not light up.
  1. Taillight relay circuit
  2. Body ECU
Theft deterrent horn or horn does not sound.
  1. Security horn circuit
  2. Horn circuit
  3. Body ECU
During warning condition, cannot be canceled by unlocking the door with a key.
  1. Door key lock and unlock switch circuit (Driver's) (Passenger's)
  2. Body ECU
During warning condition, cannot be canceled by unlocking the door with a key. (transmitter)
  1. Transmitter
  2. Body ECU
During warning condition, cannot be cancelled by turning the ON with a key.
  1. Ignition switch
  2. Key unlock warning switch circuit
  3. Body ECU
The system operated for more 60 records. Body ECU

WIRELESS DOOR LOCK CONTROL 

PROBLEM SYMPTOMS TABLE - WIRELESS DOOR LOCK CONTROL SYSTEM

Symptom Suspected Area
All function of wireless door lock control system do not operate.
  1. Transmitter
  2. Wireless tuner circuit
  3. Key unlock warning switch circuit
  4. Body ECU
Lock (or unlock) function does not operate.
  1. Door unlock detection switch circuit (Driver's) (Passenger's) (Rear Door)
  2. Any door ECU
  3. Body ECU
Automatic lock function operates even if any door is opened within 30 seconds after all doors are unlocked by wireless door lock control system.
  1. Door courtesy switch circuit
  2. Any door ECU
  3. Body ECU
Wireless door lock operates, but the buzzer does not sound.
  1. Wireless door lock buzzer circuit
  2. Body ECU
Buzzer sound, but wireless door lock function does not operate. Body ECU

OTHERS 

PROBLEM SYMPTOMS TABLE - BODY CONTROL (OTHERS)

Symptom Suspected Area
Does not operate the illuminated entry
  1. Illumination circuit
  2. Body ECU
Whole function of the body control system does not operate.
  1. Power source circuit
  2. Body ECU
Cargo light does not light up.
  1. Cargo light circuit
  2. Body ECU
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