DTC B1500: Fuel Sender Open Detected: Procedure

1. Disconnect the E46 connector.
   Fig 1: Combination Meter Connector Terminal Identification

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E46-10 (E) - E46-25 (L)	Always	13.5 to 414.5 Ω

NG → See step   2 

OK → See step   4 

1. Disconnect the L17 connector.
   Fig 2: L17 Connector Terminal Identification

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E46-10 (E) - L17-3 (FE)	Always	Below 1 Ω
   L17-3 (FE) - Body ground	Always	10 kΩ or higher
   E46-25 (L) - L17-2 (FS)	Always	Below 1 Ω
   E46-25 (L) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the fuel sender gauge assembly.
   Fig 3: Inspecting Fuel Sender Gauge Assembly Connector Terminal

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2. Check that the float moves smoothly between E and F.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L17-2 (FS) - L17-3 (FE)	Float level is F (upper)	13.5 to 16.5 Ω
   L17-2 (FS) - L17-3 (FE)	Float level is between F (upper) and E (lower)	13.5 to 414.5 Ω (Gradually changes)
   L17-2 (FS) - L17-3 (FE)	Float level is E (lower)	405.5 to 414.5 Ω

   Result

   Result	Proceed to
   OK	A
   NG (for 2AZ-FE)	B
   NG (for 2ZR-FE)	C

B → See step   5 

C → See step   6 

A → See step   4