System Function
WARNING: This page is about a different car, the 2003 Mazda B4000, 2002 Mazda B4000, 2002 Mazda B3000, 2001 Mazda B4000, and 2001 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
Feature inputs:
- Brake ON/OFF switch.
- Mode Select Switch (MSS).
- Digital Transmission Range (DTR) sensor.
- Vehicle speed signal transmitted from the Powertrain Control Module (PCM).
- Encoder plate position inputs A, B, C & D.
Feature outputs:
- 4WD LOW indicator (ground when activated, open circuit when deactivated).
- 4WD HIGH indicator (ground when activated, open circuit when deactivated).
- Transfer case shift motor outputs.
Shifts between 2WD and 4WD HIGH can be made at any speed. Listed below are the inputs and outputs needed by the 4WD control module to execute a change between any of these modes. Feature inputs:
- Vehicle speed signal.
- Mode select switch.
Feature outputs:
- 4WD HIGH cluster indicator (ground when activated, open circuit when deactivated).
When shifting into or out of LOW range, the 4WD control module requires that the vehicle speed is less than 5 km/h (3 mph), the brake is applied, and the transmission is in NEUTRAL. Feature inputs:
- Mode select switch.
- Encoder plate position inputs A, B, C and D.
- Vehicle speed signal.
- Brake ON/OFF switch input (battery voltage when brake is depressed, open circuit when not activated).
- Digital Transmission Range (DTR) sensor (ground when transmission is in NEUTRAL, open circuit otherwise).
Feature outputs:
- Transfer case shift motor outputs.
- 4WD LOW cluster indicator (ground when activated, open circuit when deactivated).