B2281

1NZ-FXE STARTING: SMART KEY SYSTEM: B2281: "P" Signal Malfunction

DTC B2281 - "P" Signal Malfunction

DESCRIPTION

The power source control ECU and the transmission control ECU are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

Power source control ECU





OK:
"ON" (P signal is ON) appears on the screen.
OK -- REPLACE POWER SOURCE CONTROL ECU
NG -- Continue to next step.

2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - TRANSMISSION CONTROL ECU)




(a) Disconnect the P6 and T4 ECU connectors.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

3. CHECK OPERATION OF POWER SOURCE CONTROL ECU
(a) After replacing the power source control ECU with a normally functioning ECU, check that the hybrid control system can start normally.
OK:
Hybrid control system can start normally.
NG -- GO TO SHIFT CONTROL SYSTEM
OK -- NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)