ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2281

DESCRIPTION

This DTC is stored when there is an abnormal circuit between the main body ECU and the shift lock control ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER (SHIFT P SIGNAL)

   
   

   1. Use the Data List to check if the shift position signal is functioning properly.

      Main Body

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Shift P Signal	Shift P position signal/ON or OFF	ON: Shift lever in P OFF: Shift lever not in P	-

      Result

      Result	Proceed to
      Display on the intelligent tester does not change according to shift lever operation	A
      Display on the intelligent tester changes according to shift lever operation	B

   
   

   B

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

   A

2. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL ECU - MAIN BODY ECU AND BODY GROUND)

   

   
   

   1. Disconnect the E4 main body ECU connector.

   2. Disconnect the E51 shift lock control ECU connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition E4-2 (P) - E51-11 (P2) Always Below 1 Ω E51-3 (E) - Body ground Always Below 1 Ω E4-2 (P) or E51-11 (P2) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. INSPECT SHIFT LOCK CONTROL ECU SUB-ASSEMBLY

   
   

   1. 

      

      Check the signal waveform according to the condition(s) in the table below.

      Reference

      Terminal No. (Symbol)	Tool Setting	Condition
      E51-11 (P2) - E51-3 (E)	2 V/DIV., 20 msec./DIV.	Shift lever in P

      OK
      The waveform is similar to that shown in the illustration.

   
   

   NG

   REPLACE SHIFT LOCK CONTROL ECU SUB-ASSEMBLY Click here

   OK

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)