P2772

DTC P2772 Transfer "L4" Switch Circuit

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.

P2772:

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

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

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

Part 1:

Part 2:

WIRING DIAGRAM:

INSPECTION PROCEDURE

Steps 1-2: