Toyota 4Runner: Runnable Signal Malfunction (B2286,P0335)

Toyota 4Runner Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System(for Start Function) / Runnable Signal Malfunction (B2286,P0335)

DESCRIPTION

The power management control ECU and ECM are connected by a cable and the CAN communication lines. These DTCs are stored when the crankshaft position sensor signal information from the cable and the crankshaft position sensor signal information from the CAN communication line are inconsistent.

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 is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC Code	DTC Detection Condition	Trouble Area
B2286 P0335	The crankshaft position sensor signal information from the cable and the crankshaft position sensor signal information from the CAN communication line are inconsistent.	AM2 fuse Engine control system Power management control ECU Harness or connector

DTC Code

DTC Detection Condition

Trouble Area

B2286

P0335

The crankshaft position sensor signal information from the cable and the crankshaft position sensor signal information from the CAN communication line are inconsistent.

AM2 fuse
Engine control system
Power management control ECU
Harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ECM)

(a) Disconnect the F81 power management control ECU connector.

(b) Disconnect the B37 ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F81-4 (NE) - B37-29 (NEO)	Always	Below 1 Ω
F81-4 (NE) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	READ VALUE USING TECHSTREAM (ENGINE CONDITION)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Power Source Control / Data List.

(e) According to the display on the Techstream, read the Data List.

Power Source Control

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Engine Condition	Engine condition / Stop or Run	Stop: Engine stopped Run: Engine running	-

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Engine Condition

Engine condition / Stop or Run

Stop: Engine stopped

Run: Engine running

OK:

ON (engine stopped) or OFF (engine running) appears on the screen according to the engine condition.

GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLE SHOOTING)

5.	CHECK POWER MANAGEMENT CONTROL ECU

(a) Reconnect the power management control ECU connectors.

Text in Illustration

Component with harness connected

(Power Management Control ECU)

(b) Using an oscilloscope, check the engine speed input signal waveform at the terminal of the power management control ECU.

Standard Frequency:

Tester Connection	Condition	Specified Condition
F81-4 (NE) - Body ground	Engine stopped	No pulse generated
Engine running	Pulse generated (1000 rpm: 200 Hz)

Tester Connection

Condition

Specified Condition

F81-4 (NE) - Body ground

Engine stopped

No pulse generated

Engine running

Pulse generated

(1000 rpm: 200 Hz)

REPLACE POWER MANAGEMENT CONTROL ECU

GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLE SHOOTING)

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