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Last Modified: 11-27-2007 1.6 C
Service Category: Vehicle Interior Section: Meter/Gauge/Display
Model Year: 2008 Model: LX570 Doc ID: RM000002S2T00DX
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DESCRIPTION (2008 LX570)

DTC

B1500

Fuel Sender Open Detected

DESCRIPTION

This DTC is stored when the combination meter detects a fuel sender gauge malfunction via the CAN.

DTC Code

DTC Detection Condition

Trouble Area

B1500

When the combination meter detects a fuel sender gauge malfunction.
  • Harness or connector
  • Combination meter assembly
  • Fuel suction with pump and gauge assembly
  • Fuel sender gauge assembly

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

READ VALUE USING TECHSTREAM (FUEL SENDER GAUGE)

(a) Operate the Techstream according to the display and select the Data List METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) .

Combination Meter

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Fuel Input

Fuel sender gauge (main) input signal/Min.: 0, Max.: 127.5

Fuel sender input value

Unit: L

OK:

Fuel amount value displayed on the Techstream is almost the same as needle indication.

OK

2.

CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SENDER GAUGE AND BODY GROUND)


(a) Disconnect the E77 meter connector.

(b) Disconnect the N1 gauge connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E77-15 (L) - N1-2 (FS)

Always

Below 1 Ω

E77-14 (E) - N1-3 (FE)

E77-26 (ET) - Body ground

E77-15 (L) or N1-2 (FS) - Body ground

Always

10 kΩ or higher
OK

3.

INSPECT FUEL SUCTION WITH PUMP AND GAUGE ASSEMBLY

(a) Remove the fuel sender gauge 3UR-FE FUEL: FUEL SENDER GAUGE ASSEMBLY: REMOVAL (2008 LX570) .

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-2 (FS) - B-2 (FS)

Always

Below 1 Ω

A-3 (FE) - B-1 (FE)
OK

4.

INSPECT FUEL SENDER GAUGE ASSEMBLY


(a) Remove the fuel sender gauge 3UR-FE FUEL: FUEL SENDER GAUGE ASSEMBLY: REMOVAL (2008 LX570) .

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

2 (FS) - 3 (FE)

Float level is F (upper)

12 to 18 Ω

Float level is E (lower)

405 to 415 Ω
OK