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:
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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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Lost Communication with EV ECU (U0100,U0129,U0131,U0142,U0151,U0163,U0182,U023A)
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IG voltage is 10.5 V or higher.
No communica
Speedometer Malfunction
DESCRIPTION The combination meter assembly receives vehicle speed signals from the brake booster with master cylinder assembly (skid control ECU) via the CAN communication line. The wheel speed sensor
SEE MORE:
Terminals Of Ecu
TERMINALS OF ECU PARKING ASSIST ECU (a) Disconnect the P44 parking assist ECU connector. (b) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition P44-1 (+B) - P44-4 (GND1
Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION:
Wear protective gloves when removing the exhaust pipe assembly.
The exhaust pipe assembly is extremely hot immediately after the engine has stopped.
Confirm that the exhaust pipe assembly has cooled down before removing it.
PROCEDURE 1. REMOVE TAIL
