DTC B1500: Fuel Sender Open Detected: Procedure

1. Use the Data List to check if the fuel receiver gauge is operating properly. Refer to DATA LIST / ACTIVE TEST .
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Fuel Input	Fuel input signal/Min.: 0, Max.: 127.5	Current fuel level displayed	Unit: Liters

   OK

   The fuel amount displayed on the Techstream is almost the same as the needle indication.

NG → See step   2 

OK → See step   5 

1. Disconnect the C50 meter connector.
2. Disconnect the H12 gauge connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C50-11 (L) - H12-2 (FS)	Always	Below 1 Ω
   C50-10 (E) - H12-3 (FE)
   C50-7 (ET) - Body ground
   C50-11 (L) or H12-2 (FS) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the fuel suction plate sub-assembly. Refer to REMOVAL .
   Fig 1: Inspecting Fuel Suction Plate Sub-Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A-2 (FS) - B-2	Always	Below 1 Ω
   A-3 (FE) - B-1

   TEXT IN ILLUSTRATION
   
   

   *a	Upper Side
   *b	Lower Side (to Fuel Sender Gauge Assembly)
   *c	Connector A
   *d	Connector B

NG → See step   6 

OK: Go to next step 

1. Remove the fuel sender gauge. Refer to REMOVAL .
   Fig 2: Inspecting Fuel Sender Gauge Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Float position F (upper)	13.5 to 16.5 Ω
   	Float position E (lower)	405.5 to 414.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel Sender Gauge Assembly)
   *b	Float Position F (Upper)
   *c	Float Position E (Lower)

NG → See step   8 

OK → See step   7