AUTOMATIC TRANSMISSION SYSTEM (for 1VD-FTV) L4 Position Switch Circuit

DESCRIPTION

The four wheel drive control ECU judges whether the transfer is in the L4 position based on the information from the limit switch inside the transfer shift actuator assembly which is detected by the ECM. The four wheel drive control ECU then inputs a signal to the combination meter assembly via CAN communication and turns on the 4LO indicator.

WIRING DIAGRAM

Refer to DTC P2772 (Click here).

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - BODY GROUND)

   
   
   1. 

      Disconnect the four wheel drive control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A27-21 (L4) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - ECM)

   
   
   1. 

      Disconnect the ECM connector.

   2. Disconnect the four wheel drive control ECU connector.

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

      Standard Resistance
      Table 1. for LHD Tester Connection Condition Specified Condition A38-21 (L4) - Body ground Always 10 kΩ or higher
      Table 2. for RHD Tester Connection Condition Specified Condition A52-21 (L4) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
3. Click here

   REPLACE ECMClick here

4. Click here

   GO TO TRANSFER SYSTEM INSPECTIONClick here

5. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR