Lexus NX: Fuel Sender Open Detected (B1500)
DESCRIPTION
This DTC is stored when the combination meter detects a fuel sender gauge malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B1500 | Fuel Sender Open Detected | Both conditions are met:
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
Be careful of flames.
NOTICE:
When replacing the combination meter assembly, make sure to replace it with a new one.
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM (FUEL INPUT) |
(a) Using the Techstream, read the Data List.
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| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Fuel Input | Fuel input | Min.: 0, Max.: 127.5 | Current fuel level displayed | Unit: Liter |
| Tester Display |
|---|
| Fuel Input |
OK:
Fuel amount value displayed on the Techstream is almost the same as the needle indication.
| OK | .gif) | REPLACE COMBINATION METER ASSEMBLY |
|
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| 2. | INSPECT FUEL SENDER GAUGE ASSEMBLY |
(a) Remove the fuel sender gauge assembly.
Click here
(b) Inspect the fuel sender gauge assembly.
Click here
| NG | | REPLACE FUEL SENDER GAUGE ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY AND BODY GROUND) |
(a) Disconnect the I10 combination meter assembly connector.
(b) Disconnect the b2 fuel sender gauge assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I10-27 (FR) - b2-1 (FS) | Always | Below 1 Ω |
| I10-28 (FE) - b2-2 (FE) | Always | Below 1 Ω |
| I10-31 (ES) - Body ground | Always | Below 1 Ω |
| I10-27 (FR) or b2-1 (FS) - Body ground | Always | 10 kΩ or higher |
| I10-28 (FE) or b2-2 (FE) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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