СИСТЕМА АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ, Diagnostic DTC:P2772

Информация добавлена 08-08-2017

DTC Code	DTC Name
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 No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P2772	Four Wheel Drive (4WD) Low Switch Circuit Range / Performance	Transfer L4 position switch remains on while the vehicle is being driven under the following conditions for 1.8 sec. or more (1-trip detection logic): (a) Output shaft speed is between 1000 and 3000 rpm. (b) The transfer position switch is in H4.	Short in transfer L4 position switch circuit Transfer system ECM	Comes on	DTC stored

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2772

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

Transfer L4 position switch remains on while the vehicle is being driven under the following conditions for 1.8 sec. or more (1-trip detection logic):

(a) Output shaft speed is between 1000 and 3000 rpm.

(b) The transfer position switch is in H4.

Short in transfer L4 position switch circuit
Transfer system
ECM

Comes on

DTC stored

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 speed is between 1000 and 3000 rpm.
The specified time period has elapsed.

WIRING DIAGRAM


*1	Four Wheel Drive Control ECU

PROCEDURE

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

*a
Front view of wire harness connector

(to Four Wheel Drive Control ECU)

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
G41-21 (L4) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

GO TO TRANSFER SYSTEM Click here

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

*a
Rear view of wire harness connector

(to ECM)

Disconnect the ECM connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
G106-16 (L4) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

REPLACE ECM Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR