What are the different types of 4 pin relays?
There are 2 types of 4 pin relay available; normally open or normally closed. A normally open relay will switch power ON for a circuit when the coil is activated. A normally closed relay will switch power OFF for a circuit when the coil is activated.
Why do you need a relay for a control switch?
Why use a Relay? 1 Thinner cables can be used to connect the control switch to the relay thereby saving weight, space and cost. 2 Relays allow power to be routed to a device over the shortest distance, thereby reducing voltage loss. 3 Heavy gauge cable only needs to be used to connect a power source (via the relay) to the device.
How does a 4WD control module do a shift?
The 4WD control module accomplishes shifts by interpreting inputs from: • MSS • vehicle speed signal (transmitted from the ABS system) • gearmotor encoder plate position • brake pedal switch • digital TR sensor (automatic transmission) • clutch pedal position (CPP) switch (manual transmission) • ignition switch Copyright 2002, Ford Motor Company
When does a 5 pin relay switch off?
A normally closed relay will switch power OFF for a circuit when the coil is activated. 5 Pin Relay 5 pin relays provide 2 pins (85 & 86) to control the coil and 3 pins (30, 87 & 87A) which switch power between two circuits. They have both normally open and normally closed connection pins.
There are 2 types of 4 pin relay available; normally open or normally closed. A normally open relay will switch power ON for a circuit when the coil is activated. A normally closed relay will switch power OFF for a circuit when the coil is activated.
Is there a free wiring diagram for a GM Truck?
Access our free Wiring Diagrams Repair Guide for GM Full-Size Trucks 1988-1998 through AutoZone Rewards. These diagrams include: Fig. 2: Sample Diagram: How to Read and Interpret Wiring Diagrams
What kind of wiring diagram does AutoZone use?
Find out how to access AutoZone’s Wiring Diagrams Repair Guide for Mazda 323, MX-3, 626, MX-6, Millenia, Protégé 1990-1998 and Ford Probe 1993-1997. Find out how to access AutoZone’s Wiring Diagrams Repair Guide for Volkswagen Front Wheel Drive 1974-1989.
What is the control module on a 4WD car?
The 4WD control module controls the pulse vacuum hublock (PVH) solenoid which supplies engagement and disengagement vacuum to control the hublocks.