DTC B2286: Runnable Signal Malfunction; DTC P0335: Crankshaft Position Sensor Circuit Malfunction (NE Signal): Description

These DTCs are stored when a mismatch between the engine speed signal from the direct line sent by the ECM and the engine speed signal sent via CAN communication is detected.

HINT:

When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode changes to on (IG).
When the battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.

DTC Code	DTC Detection Condition	Trouble Area	DTC Output Confirmation Operation
B2286	Mismatch between the engine speed signal from the direct line sent by the ECM and the engine speed signal sent via CAN communication (1-trip detection logic).	AM2 No. 2 fuse Engine control system Power management control ECU Harness or connector	Disconnect the cable from the negative (-) battery terminal, wait 30 seconds and reconnect the cable to the negative (-) battery terminal. Wait 20 seconds or more with the engine switch off, and then start the engine. Make sure that the engine speed is 1000 RPM or more for 20 seconds or more after starting the engine.
P0335	Mismatch between the engine speed signal from the direct line sent by the ECM and the engine speed signal sent via CAN communication (1-trip detection logic).	AM2 No. 2 fuse Engine control system Power management control ECU Harness or connector	Wait for 10 seconds or more with the engine idling.

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected	Fail-safe Function when Malfunction Detected
When a malfunction occurs in the direct line or CAN communication signal while a trip is not being performed, there is no effect on vehicle behavior. When a malfunction occurs in the direct line or CAN communication signal while a trip is being performed, the engine cannot be started when the power source mode is on (IG). However, when the power source mode is not on (IG), the engine can be started.	When a malfunction occurs in the direct line or CAN communication signal while a trip is being performed, there is no fail-safe function. When a malfunction occurs in the direct line or CAN communication signal while a trip is not being performed, the fail-safe function behaves as follows: CAN communication is normal and the engine speed signal from the direct line is abnormal: If the engine switch is pressed briefly, cranking is stopped based on the starter OFF permission flag received via CAN communication. If the engine switch is pressed and held, cranking stops according to the engine speed signal sent via CAN communication. CAN communication is abnormal and the engine speed signal from the direct line is normal: If the engine switch is pressed briefly, cranking stops according to the engine speed signal from the direct line. If the engine switch is pressed and held, cranking stops according to the engine speed signal from the direct line. Both CAN communication and the engine speed signal from the direct line are abnormal: If the engine switch is pressed briefly, cranking stops after 6 seconds elapse. If the engine switch is pressed and held, cranking is maintained for a maximum of 30 seconds.

Vehicle Condition when Malfunction Detected

Fail-safe Function when Malfunction Detected

When a malfunction occurs in the direct line or CAN communication signal while a trip is not being performed, there is no effect on vehicle behavior.
When a malfunction occurs in the direct line or CAN communication signal while a trip is being performed, the engine cannot be started when the power source mode is on (IG). However, when the power source mode is not on (IG), the engine can be started.

When a malfunction occurs in the direct line or CAN communication signal while a trip is being performed, there is no fail-safe function.
When a malfunction occurs in the direct line or CAN communication signal while a trip is not being performed, the fail-safe function behaves as follows:
CAN communication is normal and the engine speed signal from the direct line is abnormal:
- If the engine switch is pressed briefly, cranking is stopped based on the starter OFF permission flag received via CAN communication.
- If the engine switch is pressed and held, cranking stops according to the engine speed signal sent via CAN communication.
CAN communication is abnormal and the engine speed signal from the direct line is normal:
- If the engine switch is pressed briefly, cranking stops according to the engine speed signal from the direct line.
- If the engine switch is pressed and held, cranking stops according to the engine speed signal from the direct line.
Both CAN communication and the engine speed signal from the direct line are abnormal:
- If the engine switch is pressed briefly, cranking stops after 6 seconds elapse.
- If the engine switch is pressed and held, cranking is maintained for a maximum of 30 seconds.