Diagrams for a 96 jeep grand Cherokee 4 wheel drive fuse box under the hood

SOURCE: Service 4 wheel drive

The service 4 wheel drive light comes on because there's a problem. The biggest causes of this I've seen are a software glitch in the final drive control module which the dealer can fix by reprogramming and the other is usually the electric actuator on the front axle housing. The only light that comes on by a timer is the one that says, "perform service" in your overhead console or odometer.

SOURCE: 1999 jeep grand cherokee all time four wheel drive will not engage

Sounds like the splines on your transfer case gear are ground down

ZJ Limited

• 17989 Answers
• Posted on Jul 15, 2009

SOURCE: computer light says service 4 wheel drive switch

According to the mechanic who works on my 94 Jeep it's one of three things:
1) Corrosion on the connector to the switch (which is located on top of the transfer case).
2) A bad switch. Part cost about $22.00 or,
3) A bad console display. he says they have had a fair number of console display units fail.

ZJ Limited

• 17989 Answers
• Posted on Jul 21, 2009

SOURCE: Need fuse diagram from 1998 Jeep Grand Cherokee.

Check several documents about this:

1. 1998 | JEEP | GRAND CHEROKEE Go to
- User: greatfalls / Pass: publiclibrary
- Select Auto Repair Reference Center>> 1998>> Jeep>> Grand Cherokee>> Model
- Repair Procedures
- Chassis Electrical>> Circuit Protection

2. Engine Fuses

3. ZJ-Secc-8W-Wiring-Diagrams

Good luck!!!

SOURCE: 1998 Jeep Grand Cherokee Limited inside fuse box diagram

Check out hanes book ore go dealer see if you can get print out for free