Home Vehicle Interior Meter/Gauge/Display METER / GAUGE SYSTEM
Last Modified: 11-27-2007 1.6 J
Service Category: Vehicle Interior Section: Meter/Gauge/Display
Model Year: 2008 Model: LX570 Doc ID: RM000000V8000JX
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DESCRIPTION (2008 LX570)

Odo/Trip Switch Malfunction

DESCRIPTION

The ODO/TRIP display of the meter changes each time the ODO/TRIP switch on the light control rheostat is pressed.

HINT:

For more information about changing between displays, refer to the owner's manual.

WIRING DIAGRAM



INSPECTION PROCEDURE

PROCEDURE

1.

READ VALUE USING TECHSTREAM (LIGHT CONTROL RHEOSTAT)

(a) Operate the Techstream according to the display and select the Data List.

Combination Meter

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

ODO/TRIP Change SW

ODO/TRIP switch condition/ON or OFF

ON: ODO/TRIP switch pushed

OFF: ODO/TRIP switch not pushed

-

OK:

Switch condition (ON/OFF) can be switched by actual operation.

OK

2.

INSPECT LIGHT CONTROL RHEOSTAT (ODO/TRIP SWITCH)


(a) Remove the light control rheostat METER / GAUGE / DISPLAY: LIGHT CONTROL RHEOSTAT: REMOVAL (2008 LX570) .

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

4 (A/B) - 1 (E)

ODO/TRIP switch on (Pushed)

Below 100 Ω

ODO/TRIP switch off (Not pushed)

1 MΩ or higher

OK

3.

CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT)


(a) Disconnect the E77 meter connector.

(b) Disconnect the E9 switch connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

E77-27 (RSET) - E9-4 (A/B)

Always

Below 1 Ω

E77-34 (E2) - E9-1 (E)

E77-34 (E2) - Body ground

E77-27 (RSET) or E9-4 (A/B) - Body ground

Always

10 kΩ or higher

OK