Home › Suspension › Tire Pressure Monitoring › TIRE PRESSURE WARNING SYSTEM
Last Modified: 11-27-2007 1.6 D
Service Category: Suspension Section: Tire Pressure Monitoring
Model Year: 2008 Model: LX570 Doc ID: RM000000XMW02NX
Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DIAGNOSIS SYSTEM (2008 LX570)

DIAGNOSIS SYSTEM

1. DIAGNOSIS SYSTEM

(a) Warning light and indicator

(1) When there is a problem with the tire pressure warning system, "Check Tire Pressure System" is displayed on the multi-information display, the master warning light turns on and the tire pressure warning light blinks at 0.5 second intervals, and turns on after 1 minute.

NOTICE:

When the malfunction has been corrected, the tire pressure warning light does not turn on or blink and "Check Tire Pressure System" is not displayed.

(b) DTCs (Normal mode)

(1) DTCs are stored in the tire pressure warning ECU and output by the blinks of the tire pressure warning light or by using the Techstream TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(c) Test Mode

(1) By switching from normal mode into Test Mode (input signal check), the tire pressure warning antenna and receiver, each tire pressure warning valve and transmitter, and the vehicle speed sensor can be inspected TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: TEST MODE PROCEDURE (2008 LX570) .

2. CHECK WARNING LIGHT

(a) Turn the engine switch on (IG).

(b) Check that the tire pressure warning light turns on for 3 seconds.

If the warning check result is not normal, proceed to the troubleshooting for the tire pressure warning light circuit.

Trouble Area

See procedure

Tire pressure warning light circuit

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DESCRIPTION (2008 LX570)

3. TIRE PRESSURE WARNING LIGHT AND INDICATOR CHART

HINT:

The table below indicates the state of the tire pressure warning light and indicator after the engine switch is turned on (IG).

Condition

Immediately after Turning Engine Switch on (IG)

Always

Warning Light Output Pattern

Warning Indicator Output Pattern

Turns on for 3 Seconds

Goes off

Turns on

Blinks for 1 Minute and then Illuminates*1

Blinks*2

Blinks*3

Blinks*4

Output DTC

Displayed on Multi-information Display

Normal

○

○

-

-

-

-

-

-

-

Low tire pressure

○

-

○

-

-

-

-

-

Low Tire Pressure

System failure

○

-

-

○

-

-

-

-

Check Tire Pressure System

Test mode

○

-

-

-

○

-

-

-

Tire Pressure Test Mode

Initialization

○

-

-

-

-

○

-

-

Tire Pressure Reset Proceeding

ECU connector poorly connected

-

-

-

○*5

-

-

-

-

-

TC ground (DTC is output)

○

-

-

-

-

-

-

○

-

TC ground (DTC is not output)

○

-

-

-

-

-

○

-

-

*1: Turns on and goes off repeatedly at 0.5 second intervals, and turns on after 1 minute.

*2: Turns on and goes off repeatedly at 0.125 second intervals.

*3: Blinks 3 times (1 second on, 1 second off).

*4: Turns on and goes off repeatedly at 0.25 second intervals.

*5: When there is an open circuit, the light is off for 10 seconds. Then it blinks at 0.5 second intervals, and turns on after 1 minute.