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 Code	DTC Detection Condition	Trouble Area
P2772	The 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. AB60F 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. AB60F 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 Connection Condition Specified Condition
A27-21 (L4) - Body ground Always 10 kΩ or higher

Text in Illustration
*a	Front 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)

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:
for LHD
Tester Connection Condition Specified Condition
A38-21 (L4) - Body ground Always 10 kΩ or higher
for RHD
Tester Connection Condition Specified Condition
A52-21 (L4) - Body ground Always 10 kΩ or higher

for LHD
Tester Connection	Condition	Specified Condition
A38-21 (L4) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
A52-21 (L4) - Body ground	Always	10 kΩ or higher

Text in Illustration
*1	for LHD
*2	for RHD
*a	Front view of wire harness connector (to ECM)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE ECM ()

AB60F AUTOMATIC TRANSMISSION / TRANSAXLE

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

AUTOMATIC TRANSMISSION SYSTEM for 1UR-FE