Last Modified: 4-30-2014 6.6 T Doc ID: RM000001DT4000X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE; 2006 MY LX470 [05/2005 -        ]

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause 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.

Wireless door lock control system

Symptom

Suspected area

See page

All function of wireless door lock control system do not operate

1. ECU Power Source Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: ECU Power Source Circuit

2. Door Courtesy Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: Door Courtesy Switch Circuit

3. Door Key Lock and Unlock Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Door Key Lock / Unlock Switch Circuit

4. Key Unlock Warning Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: Unlock Warning Switch Circuit

5. Wireless Door Lock ECU

-

6. Body ECU (Main)

-

Only door unlock operation is not possible (Lock operation is possible)

1. Door Key Lock and Unlock Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Door Key Lock / Unlock Switch Circuit

2. Door Unlock Detection Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Door Unlock Detection Switch Circuit

3. Wireless Door Lock ECU

-

4. Body ECU (Main)

-

Only door lock operation is not possible (Unlock operation is possible)

1. Door Key Lock and Unlock Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Door Key Lock / Unlock Switch Circuit

2. Wireless Door Lock ECU

-

3. Body ECU (Main)

-

Only transmitter misoperation prevention function is not possible

1. Key Unlock Warning Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: Unlock Warning Switch Circuit

2. Wireless Door Lock ECU

-

3. Body ECU (Main)

-

Wireless door lock function operates even when each door is opened

1. Door Courtesy Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: Door Courtesy Switch Circuit

2. Wireless Door Lock ECU

-

3. Body ECU (Main)

-

Wireless door lock functions incorrectly. (Although one door is unlocked, when the transmitter switch is pressed, all doors unlock.)

1. Door Unlock Detection Switch Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Door Unlock Detection Switch Circuit

2. Wireless Door Lock ECU

-

3. Body ECU (Main)

-

Wireless door lock operates, but the buzzer does not sound

1. Wireless Door Lock Buzzer Circuit

2006 MY LX470 [05/2005 -        ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: Wireless Door Lock Buzzer Circuit

2. Wireless Door Lock ECU

-

3. Body ECU (Main)

-

Wireless door lock operates, but the taillights do not respond

1. Taillight Relay Circuit

2006 MY LX470 [05/2005 -        ]; LIGHTING: LIGHTING SYSTEM: Taillight Relay Circuit

2. Taillight Circuit

2006 MY LX470 [05/2005 -        ]; LIGHTING: LIGHTING SYSTEM: Taillight Circuit

3. Wireless Door Lock ECU

-

4. Body ECU (Main)

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