Normal Operation
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
When the Mode Select Switch (MSS) is engaged to lock the rear differential, a Pulse Width Modulated (PWM) signal is sent to the Electronic Locking Differential (ELD) field coil by the Transfer Case Control Module (TCCM). This signal is a PWM signal which is initially 98% duty cycle to lock the differential and decreases to 40% duty cycle once the differential is locked. If the differential does not lock, the TCCM continues to send the signal for a set amount of time. If after a set period time the differential does not lock, the TCCM sets this code indicating a problem with the differential.
- DTC P1832:00 (Transfer Case Differential Lock-up Solenoid Circuit Failure: No Sub Type Information) - The TCCM sends a signal to the lock up solenoid to lock the differential. After several unsuccessful attempts, the TCCM sets this DTC alerting the driver the electronic locking differential is inoperative.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- ELD field coil