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1993 Jeep Cherokee

1993 ACCESSORIES & EQUIPMENT Chrysler Corp. Instrument Panels

Jeep; Cherokee

DESCRIPTION

Instrument panel is supplied voltage through gauges fuse. A printed circuit on rear of instrument cluster distributes voltage to gauges and indicators.

Emission Maintenance Timer

Emission Maintenance Timer and Indicator Light activate when mileage reaches scheduled maintenance interval of 82,500 miles. Timer can be reset using DRB-II.

TESTING

GAUGE TESTING

Compare resistance values of malfunctioning gauge to specifications. See OIL PRESSURE GAUGE RESISTANCE, FUEL GAUGE RESISTANCE and TEMPERATURE GAUGE RESISTANCE tables.

OIL PRESSURE GAUGE RESISTANCE TABLE

Oil Pressure (psi) Ohms

0 1

40 46

80 87

FUEL GAUGE RESISTANCE TABLE

Application Ohms

Empty 105

1/2 Full 33

Full 5

TEMPERATURE GAUGE RESISTANCE TABLE

Application & Test Temperature Ohms

100F (38C) 1365.0

220F (104C) 93.5

260F (127C) 55.1

BRAKE INDICATOR INOPERATIVE

1) Turn ignition switch on with engine off. Apply parking brake, and unplug brake warning light switch connector. Connector is located below brake master cylinder at left rear of engine compartment. Jumper between brake warning light switch connector Gray/White wire and ground. If bulb is good and indicator lights,

repair open circuit to indicator.

2) With ignition switch off, measure resistance between brake warning switch connector Gray wire (changes to Gray/White wire at splice) and ground. If reading is zero ohms, check switch and/or brake system. If reading is not zero ohms, repair open circuit to parking brake switch ground.

COOLANT TEMPERATURE GAUGE INOPERATIVE

Turn ignition switch on with engine off. Disconnect coolant temperature sending unit connector (located at left rear of engine). If needle does not indicate at low end of scale, touch connector Violet/Yellow wire to ground. If needle indicates at high end of scale, replace sending unit. If needle does not indicate at high end of scale, repair open Violet/Yellow wire to gauge.

COOLANT TEMPERATURE INDICATOR LIGHT INOPERATIVE

Turn ignition switch on with engine off. Disconnect coolant temperature sender connector (located at left rear of engine). Touch connector Violet/Yellow wire to ground. If indicator lights, replace switch. If bulb is good and indicator light remains off, repair open Violet/Yellow wire to instrument cluster terminal.

FUEL GAUGE INOPERATIVE

With ignition on and engine off, disconnect fuel gauge sending unit connector. If needle goes to "E", replace sending unit. If needle does not go to "E", connect fuel gauge sending unit connector and disconnect instrument cluster connector terminal B1. Check resistance of sending unit. If resistance is 5-105 ohms, replace gauge. If resistance is not 5-105 ohms, repair open Dark Blue wire to sending unit.

GAUGES & INDICATORS INOPERATIVE

Check gauge fuses. Replace if blown. Test instrument cluster connector terminal A3 ground wire. See Figs. 1 and 2. If any resistance to ground is detected, repair open Black wire in ground circuit.

PANEL LIGHTS: ALL LIGHTS INOPERATIVE, PARKING LIGHTS WORKING

10. Check PARK fuse and instrument lights fuse. Replace if
    necessary. Repair short to ground in 12-volt supply wire to blown
    fuse.

11. Using voltmeter, probe battery side of instrument lights
    fuse while turning headlight switch dimming rheostat from LO to HI. If
    results are not zero volts for LO and battery voltage for HI, replace
    headlight switch.

12. Using DVOM, check resistance at ground (bulb) side of
    instrument lights fuse with parking lights off. If resistance to
    ground is almost zero (allowing for bulb filaments), system is good.
    If resistance is zero ohms, 12-volt supply wire from fuse is shorted
    to ground. Repair short.

LOW FUEL WARNING LIGHT INOPERATIVE

Turn ignition on with engine off. Disconnect wire to terminal B1 of instrument cluster connector. See Figs. 1 and 2. Wait 10 seconds. If indicator light glows, system is good. Replace sending unit. If indicator light does not glow, replace low fuel warning

module (on back of instrument cluster). OIL PRESSURE GAUGE INOPERATIVE

10. Turn ignition on with engine off. Disconnect oil pressure
    sender connector, located on right side of engine, next to
    distributor. If needle goes to high indication, system is good.

11. If needle does not indicate at high end of scale, touch
    oil pressure sending unit connector Gray wire to ground. If needle
    indicates at low end of scale, replace sending unit. If needle does
    not indicate at low end of scale, repair open in Gray wire circuit to
    gauge (instrument cluster terminal B7). See Figs. 1 and 2.

OIL PRESSURE INDICATOR INOPERATIVE

Turn ignition on with engine off. Touch oil pressure switch connector Gray wire to ground. If light glows, replace switch. If light does not glow and bulb is good, repair open in Gray wire to instrument cluster connector terminal B7. See Figs. 1 and 2.

PART TIME OR 4WD INDICATOR INOPERATIVE

10. Apply parking brake. Start engine. Place 4WD selector
    lever in 4WD LOCK or 4WD position. Unplug 4WD switch, and touch
    harness connector Black/Yellow wire to ground. If indicator light
    glows, wiring system is good. Check 4WD switch operation, and replace
    switch if defective.

11. If indicator light does not glow and bulb is good, repair
    open in Black/Yellow wire circuit to indicator light.

TACHOMETER INOPERATIVE

Tachometer input is from engine PCM pin No. 43. Check

Gray/Light Blue wire for short or open circuits. If wire is okay, see appropriate G - TESTS W/CODES article in the ENGINE PERFORMANCE Section.

VOLTMETER (GAUGE) INOPERATIVE

Turn ignition on with engine off. If voltmeter does not indicate battery voltage, check voltage at instrument cluster connector terminal A8. See Figs. 1 and 2. If battery voltage exists at terminal A8, replace voltmeter. If battery voltage does not exist at terminal A8, repair open White/Black wire circuit to gauges fuse.

NO.	LAMP	TERMINAL NAME
1	A	.OW WASHER
2	В	:heck engine
	В	GN
4	^ *"	GN
S	^	GN
6	С	CHECK ANTILOCK
7	D	UP SHIFT
»	E	MAKE
9	F	SECURITY
10	F	SAH
11	G	=ULL TIME
12	H	>ART TIME
13	1	MAINT REQD
14	1	GN
15	J	SEAT BELT
16	^--^	3ND

91C14466

Fig. 3: Removing Instrument Cluster Bezel Courtesy of Chrysler Corp.

Fig. 4: Removing Instrument Cluster Courtesy of Chrysler Corp.

13

10. Tell-Tale Display

11. Lens

12. Gauge Bezel

13. Temperature Gauge

14. Fuel Gauge

15. Tachometer

10. Low Fuel Warning Module

11. Speedometer

12. Oil Pressure Gauge

10. Voltmeter

11. Mounting Bezel

12. Printed Circuit (Gauges)

13. Printed Circuit (Tell-Tale)

Fig. 6: Exploded View Of Instrument Panel Courtesy of Chrysler Corp.

WIRING DIAGRAMS

See appropriate chassis wiring diagram in WIRING DIAGRAMS.