B2281

2AZ-FXE STARTING: SMART KEY SYSTEM: B2281: "P" Signal Malfunction

DTC B2281 - "P" Signal Malfunction

DESCRIPTION

The HV control ECU and the shift lock control ECU are connected by a cable and the CAN. If the cable information and CAN information are inconsistent, this DTC will be output.
HINT: After the main body ECU is replaced, perform the registration procedures for the engine immobiliser system Programming and Relearning.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM
(a) Connect Techstream to the DLC3.
(b) Turn the power switch on (IG) and turn Techstream main switch on.
(c) Read the DATA LIST according to the displays on the tester.

Main Body:





OK:
"ON" (P signal is ON) and "OFF" (P signal is OFF) appear on the screen.
HINT: If the result is not as specified, there may be a malfunction with the shift lock control ECU Components.

NG -- CHECK WIRE HARNESS (MAIN BODY ECU - SHIFT LOCK CONTROL ECU)
OK -- GO TO SHIFT LOCK CONTROL SWITCH
2. CHECK WIRE HARNESS (MAIN BODY ECU - SHIFT LOCK CONTROL ECU)
(a) Disconnect the E9 and E57 ECU connectors.




(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK MAIN BODY ECU OPERATION
(a) After replacing the main body ECU with a normally functioning ECU, check the power source mode change.
(1) When the key is inside the vehicle, the brake pedal is depressed and the shift lever is in P, check that pressing the power switch causes the power source mode to change to on (READY).
OK:
Power switch on (READY).
HINT: If power mode does not change to ON (READY) Power Source Mode Does Not Change To ON (Ready).

NG -- GO TO OTHER PROBLEM
OK -- END (MAIN BODY ECU DEFECTIVE)