P1782

DTC P1782 T/F L4 RANGE POSITION SWITCH PERFORMANCE

CIRCUIT DESCRIPTION

DTC Detection Condition:

The ECM detects the signal from the transfer L4 position switch. This DTC indicates that the transfer L4 position switch remains on.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Condition:

Typical Malfunction Thresholds:

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 750 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, illuminate the MIL and store the DTC.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE