AUTOMATIC TRANSMISSION SYSTEM (for 1GR-FE), Diagnostic DTC:P2772

DESCRIPTION

The ECM detects the signal from the transfer L4 position switch.

This DTC indicates that the transfer L4 position switch remains on.

MONITOR DESCRIPTION

The ECM monitors the transfer-case L4 position switch to determine when the transfer-case L4 gears are engaged. If the transfer-case L4 gears remain engaged under the following conditions, the ECM will conclude that there is a malfunction of the L4 position switch, illuminate the MIL and store the DTC:

• The L4 switch indicates that the L4 transfer-case gears are engaged.

• The transfer-case shifter is in the "H4" position.

• The transfer-case output shaft speed is between 1000 and 3000 rpm.

• The specified time period has elapsed.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

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

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Four Wheel Drive Control ECU)

      Disconnect the G53 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 G53-21 (L4) - Body ground Always 10 kΩ or higher

   
   

   NG

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

   OK

   GO TO TRANSFER SYSTEM Click here

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

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to ECM)

      Disconnect the G55 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition G55-16 (L4) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE ECM Click here