P2772
DTC P2772 Transfer "L4" Switch CircuitDESCRIPTION
The ECM detects the signal from the transfer L4 position switch.
This DTC indicates that the transfer L4 position switch remains on.
P2772:
MONITOR DESCRIPTION
The ECM monitors the transfer-case L4 position switch to determine when the transfer-case L4 gear is engaged. If 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:
^ L4 switch indicated that the L4 transfer-case gears are engaged.
^ Transfer-case shifter is in the "H" position.
^ Transfer-case output shaft rpm is between 1,000 and 3,000 rpm.
^ The specified time period has elapsed.
If all of the above conditions are detected, the ECM will conclude that there is a malfunction of the L4 switch, and illuminate the MIL and store the DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM:
INSPECTION PROCEDURE
Step 1:
Step 2:
Step 3:
