Pinpoint Test M: DTC P1833:00
Four Wheel Drive (4WD) Systems - Electronic Shift
Pinpoint Test M: DTC P1833:00
Refer to Wiring Diagram Set 34, Four-Wheel Drive Systems for schematic and connector information. Diagrams By Number
Normal Operation
The vehicle must be engaged into either 4 wheel high or 4 wheel low mode in order to operate the rear Electronic Locking Differential (ELD). When the switch is engaged to lock the rear differential, a Pulse Width Modulated (PWM) signal is sent to the ELD field coil by the Transfer Case Control Module (TCCM) through circuit CCF31. 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 circuit CCF31 is open, the TCCM will sense a signal is not reaching the differential and will set this DTC.
- DTC P1833:00 Transfer Case Differential Lock-up Solenoid Open Circuit: No Sub Type Information - The TCCM sends a signal to the differential to lock the differential. The TCCM will sense that circuit CCF31 is open.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- TCCM
PINPOINT TEST M: DTC P1833:00
NOTE: Make sure the battery is fully charged before performing this pinpoint test.