Dtc P2772 Four Wheel Drive (4Wd) Low Switch Circuit Range / Performance

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - A750F AUTOMATIC TRANSMISSION / TRANSAXLE

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

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

DTC P2772 Four Wheel Drive (4WD) Low Switch Circuit Range / Performance

DESCRIPTION

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


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

DTC CodeDTC Detection ConditionTrouble Area
P2772The transfer L4 position switch remains on while the vehicle is running under the following conditions for 1.8 sec. or more (1 trip detection logic):
(a) The output shaft speed is between 1000 and 3000 rpm.
(b) The transfer position switch is in H4.
Short in transfer L4 position switch circuit
Four wheel drive control ECU
ECM

MONITOR DESCRIPTION

The ECM monitors the transfer-case L4 position switch to determine when the transfer-case L4 gears are engaged. If the L4 switch indicates that 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 transfer-case shifter is in the "H4" position.
The transfer-case output shaft rpm is between 1000 and 3000 rpm.
The specified time period has elapsed.

WIRING DIAGRAM

Dtc P2772 Four Wheel Drive (4Wd) Low Switch Circuit Range / Performance. A750F AUTOMATIC TRANSMISSION / TRANSAXLE. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - BODY GROUND)
Dtc P2772 Four Wheel Drive (4Wd) Low Switch Circuit Range / Performance. A750F AUTOMATIC TRANSMISSION / TRANSAXLE. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the four wheel drive control ECU connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    A27-21 (L4) - Body groundAlways10 kΩ or higher
Text in Illustration
*aFront view of wire harness connector
(to Four Wheel Drive Control ECU)
NG
Go to step 2
OK
GO TO TRANSFER SYSTEM INSPECTION ()
2.CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - ECM)
Dtc P2772 Four Wheel Drive (4Wd) Low Switch Circuit Range / Performance. A750F AUTOMATIC TRANSMISSION / TRANSAXLE. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the ECM connector.

Disconnect the A27 four wheel drive control ECU connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    A38-21 (L4) - Body groundAlways10 kΩ or higher
Text in Illustration
*aFront view of wire harness connector
(to ECM)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM ()