Vehicle - Model Year Updates
04-9Model Year Update - Technical and Feature Changes
MODEL:
94 MY Sedan Range
DATE:
9/93
The list details the technical and feature changes which will be introduced on 1994 MY Sedans. NOT ALL changes will be incorporated in early production vehicles. The starting VIN for 1994 MY Sedans is 687219.
DESCRIPTION OF MAJOR CHANGES
CHASSIS
Toe Adjustment for Rear Suspension
The rear suspension toe is now adjustable. The angle change is achieved by an eccentric adjustment to the lower pivot bolt of the rear hub carrier.
Rear Suspension Road Spring Mounted Directly onto Cast Alloy Wishbone
The rear suspension road spring and shock absorber are mounted independently to eliminate the side load on the shock absorber, which may cause seal wear and leaks. The wishbone has changed from a welded assembly to an alloy casting.
ZF Steering Rack - Stage II
A revised upper bearing for the pinion is introduced and the pinion housing is now a separate die casting.
The valve design incorporates Positive Center Feel (PCF) to provide improved steering feel and a new top bearing to eliminate valve noise. The pinion height is increased by 0.27 in. (6.9 mm.). New PAS hoses and a shorter lower column are required.
Road Wheels
Each Sedan model has a new distinctive style road wheel with center finishers which expose the lug nuts on XJ6 and VDP. These wheels are 7x16 in. cast alloy, diamond turned and clear lacquer coated.
Note:
The diagrams for the KIKI and AERO wheels show the flush finisher specified for non-North American markets.
Note:
The 5 spoke wheels introduced on XJS & XJS V12 CANNOT be used on XJ12 Sedan as they are not rated for the XJ12 Sedan vehicle weight. They can however on the XJ6/VDP range. See Figures 1, 2 and 3.
ENGINE
Cam Cover & Crankcase Breather System
The all new black finish cam cover is retained by 13 fixings and incorporates the oil filler cap and crankcase breather system (Fig. 4).
The increased number of fixings improve sealing and with the integrated oil filler cap will reduce the possibility of potential oil leaks. The cap is retained by a bayonet action to resolve seizing of the threads experienced on the previous design.
The full load breather is integral within the cam cover. The part load breather system is within the throttle body and is water heated (Fig. 5). The new breather system has improved venting capability to reduce oil consumption and contamination of recirculated exhaust gas (EGR).
Inlet Manifold
The inlet manifold is now a one piece casting, eliminating the 6 U-bend air pipes, to minimize the possibility of potential air leak paths and have more consistent flow characteristics. The inlet manifold to head face gasket is thinner to avoid separation and creep of the gasket (Fig. 6).
ELECTRICAL SYSTEMS
Column Switch Gear
The column switch gear has improved stalk design (Fig. 7) and smoother action detents to improve the feel of operation. The stalks are also raised 0.6 in. (15 mm.) to improve access.
Harada Power Antenna
The Harada antenna has improved reliability and incorporates the timer unit simplifying the system's circuitry. Figure 8 shows the motor unit installed. The inset figure has the unit rotated 180 deg. to show the fuel pump relays located on the mounting bracket behind the antenna.
Connectors for Electrical Accessories
To eliminate harness faults due to aftermarket electrical accessories being installed, three fused accessory power connectors with their mating halves are now provided.
The connector locations are shown in Fig. 9 and in detail in Figures 10, 11 & 12.
A - Underhood, clipped to the RHS of the brake pedal housing (Fig. 10).
B - Behind the passenger side knee bolster, clipped to the fascia support bracket (Fig. 11).
C - In the trunk under the battery support tray (Fig. 12).
Note:
A RHD vehicle is shown in these figures.
All three connectors are the same and labelled (D, Fig. 13) for easy identification.
The connector terminals are (E, Fig. 14):
Accessory Electrical Connector Locations
The fuses for these connectors are located in the RH fuse box (Fig. 15), the ratings and fuse numbers are as follows:
A - Underhood 10 amp. # B3
B - Passenger Compartment 10 amp. # B3
C - Trunk 20 amp. # A6
NOTE:
The wiring for each connector is rated at 20 amp. Install fuses to match the accessory load but DO NOT exceed a rating of 30 amp.
Cellular Telephone Pre-Wired
The vehicle is pre-wired for a Motorola cellular telephone. Two harnesses are used. The transceiver/antenna harness is integrated into the RH side harness. The speaker/microphone harness is separate and routed across the bulkhead. (Fig. 16)
NOTE:
The installation procedures for the range of Motorola Cellular telephones will be covered in a separate Technical Bulletin.
Trunk Release Switch
The remote trunk release switch has been relocated to the rear edge of the center armrest cubby box (Fig. 17) next to the security system control switch.
Climate Control System Refinements
BODY EXTERIOR
"Lift-Off Doors" & Two Position Check Strap.
The "lift-off doors" capability allows assembly of the vehicle and doors on separate assembly lines to improve quality and manufacturing efficiency.
The door hinges require no maintenance and a two position check strap has been incorporated in the design. Removal of the door(s) is straight forward and may be carried out for repairs when required, refer to the Service Manual for the R&R procedure.
BODY INTERIOR
Passenger Side Airbag
A passenger side airbag with mechanical sensing is standard for 1994 MY. It meets the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 208, optimized for protection of an unbelted occupant. The unit is mounted in place of the fascia glove box. The deployment door is faced with veneer to match the fascia. The knee bolster is an integral part of the restraint system (Fig. 20).
NOTE:
A passenger side airbag is also available for other markets but has a different functional specification. To prevent installing the wrong airbag the mounting hole dimensions are different and the USA/Canada module is colored GOLD. If a replacement airbag module does not fit and it is BLACK, check the part number as it will not be the correct specification unit. See Figure 21.
CAUTION:
THE AIRBAG MODULE MUST BE DISARMED BEFORE ANY ATTEMPT IS MADE TO REMOVE IT FROM THE FASCIA. Refer to the Service Manual for R&R procedures.
The seat belts have also changed, a non-web locker belt is fitted on the passenger side.
The tear webbing buckle assemblies are the same specification for driver and front passenger seat belt systems.
Cup Holder
A cup holder is incorporated within the front end of the center armrest. The cup holder pops up into place on when the release button is pressed (Fig. 22).
The center armrest lid now has a mechanical latch instead of magnetic.
Interior Rear View Mirror
The interior rear view mirror is mounted directly onto the windshield and incorporates automatic electrochromic dimming. When excessive light from a following vehicle's headlights is detected, the mirror will automatically reduce the amount of reflected light. This eliminates the need to dip the mirror and avoids distracting reflections. When the forward facing ambient light sensor detects a general reduction in the lighting level, the mirror's reflectivity is increased to maintain adequate rearward vision. See Figure 23.
The slider control can be adjusted to suit the driver's personal preference at which the mirror begins to react to incoming light.
When reverse gear is engaged, the "reverse inhibit" feature ensures that maximum visibility is maintained.
Functional test Procedure:
The following test procedure will check for correct operation of the electrochromic mirror. See Figure 24.
^ Select "Park" and apply the parking brake.
^ Switch on the ignition.
^ Cover the ambient light sensor with a black cloth.
^ Set the slider control to maximum.
^ Shine a flashlight at the glare sensor, the mirror should darken.
^ Keep the flashlight aimed at the glare sensor for the next two steps.
^ Apply the brake and select "Reverse", the mirror should become clear.
^ Select "Park", the mirror should darken.
^ Remove the flashlight and black cloth.
^ Check that the mirror returns to its original ambient condition.