GSIC - Global Service Information Center

### DTC P2772 Transfer "L4" Switch Circuit

## for Preparation Click here

## DESCRIPTION

The ECM detects the signal from the No. 1 transfer indicator switch (L4 position switch).
This DTC indicates that the transfer L4 position switch remains ON.

DTC No. | DTC Detection Condition | Trouble Area

P2772

1. Transfer L4 position switch remains ON while vehicle is running under following conditions for 1.8 seconds or more (1 trip detection logic):

1. Output shaft speed 3,000 rpm or less
2. Transfer shift position is H

1. Short in transfer L4 position switch circuit
2. Transfer L4 position switch
3. ECM

## MONITOR DESCRIPTION

The ECM monitors the transfer L4 position switch to determine when the transfer-case L4 gear is engaged. If the transfer-case L4 gears remain engaged under all of the following conditions, the ECM will conclude that there is a malfunction of the transfer L4 position switch:

1. The transfer L4 position switch indicates that the L4 transfer-case gears are engaged.
2. Transfer-case shift lever is in the "H" position.
3. Transfer-case output shaft rpm is between 750 and 3,000 rpm.
4. The specified time period has elapsed.

Then the ECM will illuminate the MIL and store the DTC.

## WIRING DIAGRAM

## INSPECTION PROCEDURE

1.INSPECT NO. 1 TRANSFER INDICATOR SWITCH (L4 POSITION SWITCH)

1. Remove the transfer indicator switch.

1. Measure the resistance of the switch when pushing the ball at the tip of the switch.

     Tester Connection | Switch Condition | Specified Condition
     1 - 2 | Not pushed | 10 kΩ or higher
     1 - 2 | Pushed | Below 1 Ω

| NG |

REPLACE NO. 1 TRANSFER INDICATOR SWITCH

OK |

2.CHECK WIRE HARNESS (NO. 1 TRANSFER INDICATOR SWITCH - ECM)

1. Disconnect the T4 indicator switch connector.

1. Disconnect the E17 ECM connector.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:

     Tester Connection | Specified Condition
     E17-13 (L4) - T4-1 (L4) | Below 1 Ω
     T4-2 (L4) - Body ground | Below 1 Ω
     E17-13 (L4) - Body ground | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE ECM