DESCRIPTION
These DTCs are stored when the engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
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B2286 | Runnable Signal Malfunction | The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match. (1-trip detection logic*) |
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P0335 | Crankshaft Position Sensor Circuit Malfunction (NE Signal) | The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match. (1-trip detection logic*) |
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Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
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DTC No. | Data List and Active Test |
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B2286 P0335 | Power Source Control
Starting Control
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
1. | READ VALUE USING TECHSTREAM (ENGINE CONDITION / ENGINE SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the Engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Power Source Control or Starting Control / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
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Engine Condition | Engine state | Stop or Run | Stop: Engine stopped Run: Engine running | - |
Tester Display |
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Engine Condition |
Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
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Engine Speed | Engine speed | 0 to 16383 rpm | Fluctuates in accordance with actual engine speed | - |
Tester Display |
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Engine Speed |
OK:
The Techstream display changes correctly in response to the engine condition.
OK | GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
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2. | CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
Click here
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
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3. | CHECK HARNESS AND CONNECTOR (GROUND) |
Click here
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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4. | CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ECM) |
(a) Disconnect the A74 certification ECU (smart key ECU assembly) connector.
(b) Disconnect theA37 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
A74-16 (NE) - A37-30 (NEO) | Always | Below 1 Ω |
A74-16 (NE) or A37-30 (NEO) - Body ground | Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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5. | CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the A74 and J41 certification ECU (smart key ECU assembly) connectors.
(b) Reconnect the A37 ECM connector.
(c) Using an oscilloscope, check the engine speed input signal waveform at the terminal of the certification ECU (smart key ECU assembly). Standard Frequency:
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OK | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG | GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Audio And Visual System (for 12.3 Inch Display): AVC-LAN Circuit
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Engine mounts
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...