Top 10 1996 Jeep Grand Cherokee Questions & Answers

I have a 1996 Jeep Cherokee my tail an dash lights wont come on. We have checked the fuses, replaced the light switch an checked wiring all day an still nothing. Any suggestions on what i should do next? I really need help...

It's nice that your starter is new, but your starter does not start the car...it turns the engine so it can start. So it has nothing to do with your problem...I would check for vacuum leaks at each and every vacuum hose. Then look at possible throttle position sensor and idle control valve./ valve passages. (there are electrical tests you can make on these and valve can be cleaned with carb cleaner, (carefully without turning internal plunger.)

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

Check this information, can help you:

- Engine Fuse and Relay Bank
Fig. 1 Engine Fuse and Relay Bank


Fig 2 Detail of fuse/relay


- ZJ-Secc-8W-Wiring-Diagrams
Also, you can check the page 7 and next about Fuse Description.

Good luck, and remember rated this help.

System operation
System arms after switching ignition OFF. Switch ignition ON. Immobilizer warning lamp illuminates for approximately 3 seconds. If immobilizer warning lamp flashes: Key code not recognised. Engine runs for approximately 2 seconds, then cuts out. System malfunction: Immobilizer warning lamp illuminates continuously.
Programming
When
System malfunction. Key added or replaced.
How
NOTE: Two programmed keys necessary. Complete each step within 15 seconds. Some models: Replacement key can only be programmed using diagnostic equipment.
Obtain all keys to be programmed. Using first programmed key, proceed as follows: Switch ignition ON and OFF within 15 seconds. Using second programmed key, proceed as follows: Switch ignition ON and OFF within 15 seconds. Within 10 seconds: Immobilizer LED flashes. Programming mode activated (acoustic signal will be heard). Proceed as follows: Within 50 seconds: Insert first key to be programmed into ignition switch. Switch ignition ON and OFF. Within 10 seconds: Single acoustic signal will be heard and immobilizer LED stops flashing and illuminates for 3 seconds to indicate correct programming. Repeat complete procedure to program remaining keys. Keys can also be programmed using diagnostic equipment.
NOTE: A maximum of 8 keys can be programmed.

Wiggle the connectors on the PCM during those four or five minutes...
I'm going to try the hose clamp fix myself. I have been struggling with stalling for about a month now. As a matter of fact, my PCM looks just like the one with the hose clamp. Connector C1 (black) missing the locking tab. I have tried the screw repair and zip ties. Zip ties worked for about a week and then I had a hiccup followed two days later by a full blown stall. Now it's stalling about 4 to 6 times in a one way trip to work (11 miles).
I was able to procure a clamp tonight and got it installed. When I go home we'll see. I was throwing a P0351 code with a code 43. This is an aggravating fault to be sure. I am an aircraft electrician by trade so and thanks to the volumes of people who have had this problem I have been able to do some really good fault isolation.
It exists either in the C1 connector for me or the PCM. Initially I changed the TPS and then found found C1 ready to fall off the PCM (Thus the zip ties).
Later I found that even though zip tied wiggling the harness could duplicate the fault. So another zip tie around the harness to pull tension on the connector. The fault returned. I also took a rubber mallet to the computer while the engine is running and duplicated the fault as well.
At this point I'll try the hose clamp and see how that works out. Either I don't have a good connection on C1 or the male pin 7 in the computer is a problem. Since I have an obvious defect in the locking tab on the C1 connector I'm swaying towards that. I want to talk a little system knowledge here courtesy of a guy who posted on CNet.
1. P0351 is a coil code. However:
a. The coil receives a signal from the PCM connector C1 Pin 7 to "fire".
b. There are only two wires at the coil, signal wire from the PCM pin 7 and a ground wire.
c. In order for the PCM to throw code P0351 the PCM had to fail to send the proper fire signal. Of course this assumes that you have a known good coil, clean ground and no breaks in your wiring.

2. A multimeter checks continuity not integrity. The average 18 gauge wire has 22 individual copper conductors(wires) inside the insulation. You can have 21 broken strands and still read full continuity through that single strand of wire. But that single strand of wire will not be able to handle the signal being sent to the coil (load). A load light will always check integrity AND continuity. A weak light means not enough current going through the wire and a strong light means good wire integrity.
3. So with this said, In order for P0351 to set, the computer has to give an erroneous signal to fire. Pin 7 is an OUTPUT. Now is this caused by a bad computer? Possible. A bad connection? More likely.

Let's face it computers will fail, but in my 22 years of electrical experience bad/loose/dirty connection points are the weakest link. A cold solder joint on the PC board in the computer? Yes, however this will generally show up shortly after the vehicle rolls off the assmbly line. Not 13 years later!
As for the "screw" fix. I read a post from an engineer who scraped all the resin out of the PCM to see what was on the board. The long screws go to a NYLON nut on the board. But does not come near the current path of the PC board.

Hello oreo
If it's a 5.2L eng 5.0qt (4.7L)
The 4.0 takes 6qt (5.7L)
Hope this helps.

Theres no fuse, it operates of a circuit breaker with the windows, this is located on the pass/side kick panel.you may have a bad module or switch for sunroof, heres a wiring diagram to help you, make sure your getting power to module and switch and also power and ground to motor,good luck, hope this is helpful.

Hope this helps:- Factory Disarm Purple/Yellow (-) Driver's Kick Panel Black Connector at ECM -slice into this wire, & wire it to ground, this disables the alarm.
Cavity/Fuse Diagram (1996 Grand Cherokee, passenger side kick plate to find, Owner's Manual pgs 205-206): 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Row 1: 1-6 (left to right) Row 2: 7-12 Row 3: 13-18 Row 4: 19-22
1996 Jeep Grand Cherokee Fuse Panel (Passenger Side kick panel) Reply

CAVITY FUSE DESCRIPTION 1 -10 amp (RED) Radio 2 -15 amp (Lt Blue) Cigarette Lighter 3 -10 amp (RED) Rear Washer Switch, Body Controller 4 -10 amp (RED) Airbag 5 -10 amp (RED) Lamp Out Module, Overdrive Switch, OBD II 6 -15 amp (Lt Blue) Vehicle Information Center/Graphic Display Module Park & Side Lamps, Overhead Console Lighted Visor, Automatic Dimming Mirror 7 -20 amp (Yellow) Body Amp, Cluster, Body Controller 8 -20 amp (Yellow) Rear Wiper Motor, Flipper Glass Solenoid, Cargo Lamp, Trailer Tow 9 -15 amp (Lt Blue) Brake Switch 10- 10 amp (RED) Rear Window Defroster 11 -10 amp (RED) ABS Module 12 -10 amp (RED) Heater-Ventilation-A/C Control & Recirculation Motor 13 -15 amp (Lt Blue) Hazard Switch, Turn Signal Switch 14 -15 amp (Lt Blue) Spare 15 -15 amp (Lt Blue) Spare 16 -10 amp (RED) Right & Left Courtesy Lamp, Glove Box Lamp, Halo Lamp Cargo Lamp, Underhood Lamp, Dome/Read Lamp Right & Left Visor, Automatic Dimming Mirror 17 -15 amp (Lt Blue) Radio Illumination, Tail Lamp, Graphic Display Module, Park & Side Lamps, Headlamp Switch, Body Controller 18 -20 amp (Yellow) Spare 19 -15 amp (Lt Blue) Passing Light 20 -15 amp (Lt Blue) Radio, Heater-Ventilation-A/C, Vehicle Information Center 21 -15 amp (Lt Blue) Power Outlet 22 -10 amp (Blue) Airbag Module -------------------------------------------------------------------------------------
1996 Jeep Grand Cherokee Alarm, Remote Starter, Keyless Entry Wiring Information Constant 12V+ Pink/Black Ignition Switch Harness Starter Yellow Ignition Switch Harness Ignition Dark Blue/Gray Ignition Switch Harness Ignition 2 Red/Black Ignition Switch Harness (for AC) Accessory Black/Orange Ignition Switch Harness Tach Gray/White Coil Brake Switch White/Tan Brake Switch Trunk Pin n/a Works with Dome Light Parking Lights Blue/Red (+) Left of Steering Column or Light Switch Head Lamp Tan/Black Light Switch Factory Disarm Purple/Yellow (-) Driver's Kick Panel Black Connector at ECM -slice into this wire, & wire it to ground, this disables the alarm. Door Trigger Yellow (-) Driver's Kick Panel see notes Door Lock 5/Wire in Driver's Inside Driver's Door Orange/Purple Lock Pink/Black Unlock Door Unlock and Passenger's Doors Inside Passenger's Door Black/White L Pink/Black Unlock Horn Wire Gray/Orange (-) Steering Column Windows Up LF=Light Blue, RF=Brown/White, LR=Blue/White, RR=Gray/Black Doors Windows Down LF=White, RF=Purple/White, LR=Red/Black, RR=Green/White
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