8E - 28 INSTRUMENT PANEL AND GAUGES |
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(a) Do not kink guide tube when installing cluster.
(b) Replace guide tube behind fuse block.
GAUGES
It is not necessary to remove instrument cluster from vehicle for gauge replacement. When removing gauge assemblies from cluster, gauge must be pulled straight out, not twisted, or damage to gauge pins may result.
MULTIPLE GAUGE MALFUNCTION
If all the instrument cluster gauges appear to be malfunctioning, remove the cluster assembly.
² Check for good pin contact
² Check for ignition voltage between the IGN cavity D and ground.
² If there is ignition voltage
² Check for continuity between the wire harness ground cavity G and ground.
² If there is continuity, replace the print circuit board (Fig. 16).
Fig. 14 PRNDL Step 4
Fig. 15 Cluster With Mask and Lens Removed
(7)Install the rear window defogger bezel and radio bezel.
(8)Install cluster bezel.
(9)Reconnect battery.
REMOVALÐCLUSTER WITHOUT PRNDL FROM STEERING COLUMN
(1)Remove cluster bezel (Fig. 10).
(2)Remove four screws attaching cluster to base panel.
(3)Pull cluster rearward carefully, reach behind and disconnect the two harness connectors.
(4)Carefully rotate cluster and remove the two PRNDL indicator screws.
(5)Remove cluster assembly.
(6)For installation reverse above procedures.
Fig. 16 Printed Circuit Board
GAUGE INOPERATIVE (FIG. 17 THROUGH 20)
(1)Remove gauge in question.
(2)With the ignition key ON, check for ignition voltage at ignition pin of gauge. Check for ground at ground pin of gauge. Refer to the individual gauge circuit test for proper pin.
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Fig. 17 Fuel Gauge Pins
Fig. 18 Voltmeter Pins
(a)If no voltage or ground at gauge pins. Check cavity D red cluster connector for ignition voltage or cavity G for ground.
(b)If no voltage or ground, repair as necessary. Refer to 8W, Wiring Diagrams.
(c)If there is voltage or ground, check cluster for distorted terminals. If terminals are OK, replace printed circuit board.
(3)When testing temperature and oil pressure gauges allow the engine to run until the vehicle reaches a normal operating temperature. Turn ignition OFF, and remove gauge from cluster.
(a)Testing oil pressure gauge, engine needs to be running.
(b)Measure and record the resistance between sending unit pin and ground pin of the gauge in question. Refer to Gauge Calibration.
(c)When checking temperature and oil pressure gauges, it is important to have the same engine temperature and speed when noting gauge position. The time between gauge reading and measuring should be kept to a minimum.
INSTRUMENT PANEL AND GAUGES 8E - 29
Fig. 19 Temperature Gauge Pins
Fig. 20 Oil Pressure Gauge Pins
(d)If resistance and gauge position are not similar, replace gauge.
(e)If OK, test resistance from the sending unit to the cluster connector.
(f)If resistance reading is different, check printed circuit board for contact to cluster.
(g)If OK and contacts are not distorted, replace printed circuit board.
(h)If everything checks out OK, refer to Sending Unit Test.
(4)If fuel gauge meets specifications check fuel tank and original fuel tank sending unit as follows:
(a)Carefully remove fuel tank sending unit from
tank.
(b)Refer to sending unit removal Group 14, Fuel.
(c)Connect sending unit wire and jumper wire as described in the test procedure.
(5)If fuel gauge now checks within specifications, original sending unit is electrically okay, check following as a possible cause:
(a)Ground wire from sending unit to left side cowl for continuity.
8E - 30 INSTRUMENT PANEL AND GAUGES
(b)Sending unit deformed. Make sure sending unit float arm moves freely and pick up tube is not bent upwards creating an interference with bottom of tank and inspect float.
(c)Sending unit improperly installed. Install properly.
(d)Mounting flange on fuel tank for sending unit deformed. Feel for interference fit of sending unit to bottom of tank. It is permissible to bend pick up tube down a little near mounting flange to gain interference fit.
(e)Fuel tank bottom deformed, causing improper positioning of sending unit pick up tube. Replace or repair tank and recheck sending unit.
GAUGE CALIBRATION
(1)Remove the gauge.
(2)Check for ignition voltage and ground to the gauge.
(3)With the ignition key in the OFF position, replace gauge. Turn the ignition key to the ON position. To test oil pressure gauge engine must be running. When testing oil or temperature gauge the engine should be at normal operating temperature. Record the gauge position.
(4)Remove gauge and record the resistance between the sending unit pin and the gauge ground pin. When checking gauges, it is important to have the same engine temperature and speed when noting gauge position. The time between gauge reading and measuring should be kept to a minimum.
(5)The resistance Chart (Fig. 21), is general guidelines for checking the gauge position against the sending unit resistance.
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Because of only a few specific points of gauge position versus sending unit resistance, a good estimate is need when the resistance falls between graduations. Even when the resistance corresponds to graduations, the gauge has a tolerance of 6 4 ohms.
Volt gauge: The calibration dot on the volt gauge corresponds to 13 volts between the gauge ignition and ground pins. If voltage varies from this, estimate proper gauge position with input voltage.
VOLTMETER REPLACEMENT
(1)Remove cluster bezels and mask (Fig. 22).
(2)Remove screws attaching gauge assembly to cluster.
(3)Pull rearward to disengage gauge from gauge
pins.
(4)For installation reverse above procedures.
OIL PRESSURE GAUGE REPLACEMENT
(1)Remove cluster bezels and mask/lens (Fig. 22).
(2)Remove screws attaching gauge assembly to cluster.
(3)Pull rearward to disengaged gauge from gauge
pins.
(4)For installation reverse above procedures.
FUEL AND TEMPERATURE GAUGE ASSEMBLY REPLACEMENT
(1)Remove cluster bezel and mask/lens (Fig. 22).
(2)Remove oil pressure gauge.
(3)Remove screws attaching gauge assembly to cluster.
(4)Pull rearward to disengage gauge from gauge
pins.
(5)For installation reverse above procedures.
SPEEDOMETER SYSTEM
AC body vehicles are equipped with electronically driven speedometer and odometer assemblies. The unit has the same appearance as a conventional speedometer but it eliminates the cable-driven mechanical system. A signal is sent from a transmissionmounted distance sensor to the speedometer circuitry through the wiring harness. By eliminating the speedometer cable, instrument cluster service and removal is improved. Refer to Fig. 23 Speedometer Diagnosis Chart.
SPEEDOMETER ODOMETER ASSEMBLY REPLACEMENT
(1)Remove cluster bezel and mask/lens.
(2)Remove volt gauge.
(3)Remove screws attaching gauge assembly to cluster.
(4)Pull speedometer rearward to disengage from gauge pins.
Fig. 21 Gauge Resistance
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INSTRUMENT PANEL AND GAUGES 8E - 31 |
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Fig. 22 Cluster with Mask and Lens Removed
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Fig. 23 Speedometer Diagnosis |
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(5) |
For installation: Position speedometer on gauge |
DISTANCE SENSOR REPLACEMENT |
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pins and push firmly until seated and reverse above |
(1) |
Remove harness connector from sensor and |
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procedures. |
make sure the weather seal is on harness connector |
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SPEEDOMETER CIRCUIT TESTING |
(Figs. 25 and 26). |
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(2) |
Remove sensor retaining bolt. |
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(1) |
Using the DRB II, check distance sensor for |
(3) |
Pull sensor and pinion gear assembly out of |
distance sensor fault code and for proper speed indi- |
transaxle. If necessary, carefully pry loose with a flat |
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cation. Refer to Powertrain Diagnostics Procedure |
blade screwdriver. |
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Manual, Speed Control System Test. |
(4) |
Remove pinion gear from sensor. |
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(2) |
Remove speedometer from cluster. |
(5) |
For installation reverse above procedures. Seat |
(3) |
With ignition on check for battery voltage across |
sensor assembly by hand to insure proper gear en- |
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ignition and ground pins (Fig. 24). |
gagement. Tighten retaining bolt to 7 Nzm (60 in. lbs.) |
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(4) |
Check for continuity from distance sensor signal |
torque. |
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pin to connector at distance sensor. |
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