Place the transfer case in low range. Pry the shift indicator bezel out of the console using a trim stick.
Apply the parking brake and place the transfer case in neutral. Remove the parking brake trim insert. Remove the console attaching screws. Lift the console up and disconnect the 4WD indicator lamp hamess. Remove the console.
Remove the passenger side knee blocker. Remove the single end screw. Remove the screws below the glove box. Remove the screw at the courtesy lamp. Remove the ash receiver and the screws behind it. Remove the instrument panel armature screw behind the ash receiver. Open the glove box and remove the screws behind it. Lower the panel and disconnect the lamp harnesses. For additional instrument panel service procedures to complete steps 6 thru 25, refer to Instrument Panel, Gauges and Warning Indicators/ Instrument Cluster / Carrier/ Service and Repair/ Procedures. See: Instrument Panel, Gauges and Warning Indicators\Instrument Cluster / Carrier\Service and Repair
Remove the pod switch bezels on both sides of the steering column with a trim stick.
Remove the drive side knee blocker. Remove the end screw and screws located at the bottom of the knee blocker.
Remove the cowl top trim panel by prying it up with a trim stick. Remove the solar sensor if equipped.
Remove the "A" post trim panels.
Remove the remove the bolts that attach the lower instrument panel reinforcement to the instrument panel armature and remove the reinforcement.
Disconnect the park lamp switch.
Pull back the carpet at the transmission tunnel from the base of the instrument panel center bezel. Remove the nuts from the upper studs and bolts through the floor that secure the instrument panel center bracket.
Remove the bolts that secure the instrument panel center bracket to the drivers side of the transmission tunnel.
Remove the screws securing the Vehicle Information Center and remove it. Remove the screw fastening the mounting bracket.
Unplug the vacuum harness connector or vent tube on ATC equipped vehicles and the wire harness located under the passenger side of the instrument panel.
Remove the screws holding the passenger side kick panel, along with the screw from the kick panel shroud.
Unplug the antenna cable near the right cowl side panel.
Unplug the instrument panel wire harness connectors from the junction block at the right cowl side panel.
Remove the bolts that secure the instrument panel armature to the windshield fence.
Remove the nuts that secure the top if the instrument panel armature to the windshield fence.
Remove the bolts that secure the ends of the instrument panel to the cowl side panel.
Remove the nuts that secure the steering column to the brake pedal support and lower the steering column.
Remove the bolts that secure the instrument panel armature to the brake pedal support.
Place a protective cover on the seats. Lift the instrument panel off the windshield fence studs and maneuver the instrument panel out and lower it onto the seats.
Disconnect the refrigerant lines from the evaporator tubes. Make sure to install plugs or tape the ends of the lines and fittings to ensure that excessive amounts of moisture do not contaminate the A/C system.
Remove the vacuum line at the tee from the main vacuum supply harness. This line runs through the body with the upper refrigerant line.
Remove the Powertrain Control Module with connectors intact and set aside.
Remove the heater A/C housing mounting nuts from the studs on the engine compartment side of the dash.
Remove the heater A/C housing from the vehicle.
To Install the components, reverse the procedure stated above. Torque Specifications: Instrument panel center bracket to floor transmission tunnel fastener: 28 Nm (250 in. lbs.) Instrument panel to windshield fence bolts and nuts: 12 Nm (105 in. lbs.) Instrument panel to cowl side inner panel bolts: 12 Nm (105 in. lbs.) Instrument panel to steering column support bolts: 12 Nm (105 in. lbs.)
Wrong. The red square was unique to 1993 and early 1994 ZJs with the VIC. Chrysler offered an oil level sensor on both engines and due to a high failure rate, they discontinued it. The accompanying message should read "Check Oil Level". I had this problem when I replaced my VIC in my late 1994 model with a 1993 model VIC and it showed this message all the time. Check your engine oil level and if it is fine, there is a wire you can short to ground behind the VIC unit to shut it up. That's what I had to do.
Sorry I cannot help you with the wire pinout, you'll have to figure that out on your own. Good luck with your problem and anymore questions, feel free to e-mail me at firstname.lastname@example.org
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Your VIC doesn't provide you with codes per se, it supplies other information and what you describe here is what should be written on your VIC, "Coolant Sensor Bad." The actual Coolant Sensor runs to your PCM or computer and your check engine light will come on if it runs at or above 5 volts or below 0.1 volts. If the red square on the vehicle layout is illuminated under the hood area, it means that your Coolant Recovery jug is either low on anti-freeze or the sensor next to the yellow filler cap is faulty...meaning you're low on Coolant and the VIC says that the "Coolant Sensors Bad" yet it's the amount of fluid in the plastic bottle next to the passenger side firewall, right in front of your PCM or computer. If you're low on anti-freeze, keep an eye on it, or have the coolant system pressure tested...including the 18 pound cap on the radiator itself. Also check the two wires hooked to the Coolant LEVEL Sensor in the jug with an Ohmmeter and it should be an open circuit if the level is fine, or hardly any Resistance if the level is low, causing that circuit to complete it's ground circuit and thus signaling the VIC through your BCM to turn on. (Body Control Module). The Haynes Manual you will need is # 50025 which encompasses all Jeep Grand Cherokee's from 1993 thru 2004.