WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,
REFER
TO
GROUP
8M
-
PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING
WHEEL,
STEERING
COLUMN,
OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
TURN SIGNAL AND HAZARD WARNING SYSTEMS
For circuit descriptions and diagrams, refer to
8W-52 - Turn Signals in Group 8W - Wiring Dia-
grams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,
REFER
TO
GROUP
8M
-
PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING
WHEEL,
STEERING
COLUMN,
OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Turn the ignition switch to the On position.
Actuate the turn signal lever or the hazard warning
button. Observe the turn signal indicator lamp(s) in
the instrument cluster. If the flash rate is very high,
check for a turn signal bulb that is not lit or is very
dimly lit. Repair the circuits to that lamp or replace
the faulty bulb, as required. Test the operation of the
turn signal and hazard warning systems again. If the
turn signal indicator(s) fail to light, go to Step 2.
(2) Turn the ignition switch to the Off position.
Check the turn signal fuse in the junction block
and/or the hazard warning fuse in the Power Distri-
bution Center (PDC). If OK, go to Step 3. If not OK,
repair the shorted circuit or component as required
and replace the faulty fuse(s).
(3) Turn the ignition switch to the On position to
check for battery voltage at the turn signal fuse in
the junction block; or, leave the ignition switch in the
Off position to check for battery voltage at the haz-
ard warning fuse in the PDC. If OK, go to Step 4. If
not OK, repair the open circuit as required.
(4) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Unplug the combination flasher from the junction
block and replace it with a known good unit. Connect
the battery negative cable. Test the operation of the
turn signal and hazard warning systems. If OK, dis-
card the faulty combination flasher. If not OK,
remove the test flasher and go to Step 5.
(5) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output circuit cavity for the combination flasher in
the junction block. If OK, go to Step 6. If not OK,
repair the open circuit to the turn signal fuse as
required.
(6) Turn the ignition switch to the Off position.
Check for battery voltage at the fused B(+) circuit
cavity for the combination flasher in the junction
block. If OK, go to Step 7. If not OK, repair the open
circuit to the hazard warning fuse as required.
(7) Disconnect and isolate the battery negative
cable. Check for continuity between the ground cir-
cuit cavity for the combination flasher in the junction
block and a good ground. There should be continuity.
If OK, go to Step 8. If not OK, repair the circuit to
ground as required.
(8) Unplug the multi-function switch wire harness
connector as described in this group. Check for con-
tinuity between the combination flasher hazard sig-
nal circuit cavities in the junction block and in the
multi-function switch wire harness connector. There
should be continuity. If OK, go to Step 9. If not OK,
repair the open circuit as required.
(9) Check for continuity between the combination
flasher turn signal circuit cavities in the junction
block and in the multi-function switch wire harness
connector. There should be continuity. If OK, test the
multi-function switch as described in this group. If
not OK, repair the open circuit as required.
MULTI-FUNCTION SWITCH
Perform the diagnosis of the hazard warning
and/or turn signal systems as described in this group
before testing the multi-function switch. For circuit
descriptions and diagrams, refer to 8W-52 - Turn Sig-
nals in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,
REFER
TO
GROUP
8M
-
PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING
WHEEL,
STEERING
COLUMN,
OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Unplug the multi-function switch wire harness
connector as described in this group.
(2) Using an ohmmeter, perform the switch conti-
nuity checks at the switch terminals as shown in the
Multi-Function Switch Continuity chart (Fig. 2).
(3) If the switch fails any of the continuity checks,
replace the faulty switch. If the switch is OK, repair
the lighting circuits as required.
ZG
TURN SIGNAL AND HAZARD WARNING SYSTEMS
8J - 3
DIAGNOSIS AND TESTING (Continued)
Summary of Contents for 1997 Grand Cherokee
Page 6: ...FASTENER IDENTIFICATION 4 INTRODUCTION ZG GENERAL INFORMATION Continued ...
Page 9: ...METRIC CONVERSION ZG INTRODUCTION 7 GENERAL INFORMATION Continued ...
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Page 282: ...COOLING SYSTEM DIAGNOSIS DIESEL ENGINE 7 8 COOLING SYSTEM ZG DIAGNOSIS AND TESTING Continued ...
Page 283: ...ZG COOLING SYSTEM 7 9 DIAGNOSIS AND TESTING Continued ...
Page 284: ...7 10 COOLING SYSTEM ZG DIAGNOSIS AND TESTING Continued ...
Page 285: ...ZG COOLING SYSTEM 7 11 DIAGNOSIS AND TESTING Continued ...
Page 286: ...7 12 COOLING SYSTEM ZG DIAGNOSIS AND TESTING Continued ...
Page 290: ...SERPENTINE DRIVE BELT DIAGNOSIS 7 16 COOLING SYSTEM ZG DIAGNOSIS AND TESTING Continued ...
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Page 423: ...VIC Initial Set Up ZG INSTRUMENT PANEL SYSTEMS 8E 21 SERVICE PROCEDURES Continued ...
Page 424: ...VIC Reset 8E 22 INSTRUMENT PANEL SYSTEMS ZG SERVICE PROCEDURES Continued ...
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Page 1655: ...Fig 3 Oil Lubrication System ZG 5 2L ENGINE 9 57 DESCRIPTION AND OPERATION Continued ...
Page 1684: ...TORQUE 9 86 5 2L ENGINE ZG SPECIFICATIONS Continued ...
Page 1689: ...Fig 3 Oil Lubrication System ZG 5 9L ENGINE 9 91 DESCRIPTION AND OPERATION Continued ...
Page 1723: ...DIAGNOSIS AND TESTING SERVICE DIAGNOSIS DIESEL PERFORMANCE ZG ENGINE 9 3 ...
Page 1724: ...9 4 ENGINE ZG DIAGNOSIS AND TESTING Continued ...
Page 1725: ...ZG ENGINE 9 5 DIAGNOSIS AND TESTING Continued ...
Page 1726: ...9 6 ENGINE ZG DIAGNOSIS AND TESTING Continued ...
Page 1727: ...ZG ENGINE 9 7 DIAGNOSIS AND TESTING Continued ...
Page 1728: ...9 8 ENGINE ZG DIAGNOSIS AND TESTING Continued ...
Page 1729: ...SERVICE DIAGNOSIS DIESEL MECHANICAL ZG ENGINE 9 9 DIAGNOSIS AND TESTING Continued ...
Page 1730: ...9 10 ENGINE ZG DIAGNOSIS AND TESTING Continued ...
Page 1731: ...ZG ENGINE 9 11 DIAGNOSIS AND TESTING Continued ...
Page 1762: ...SPECIFICATIONS ENGINE SPECIFICATIONS 9 42 ENGINE ZG ...
Page 1763: ...ZG ENGINE 9 43 SPECIFICATIONS Continued ...
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Page 2122: ...DIAGNOSIS AND TESTING NV231 DIAGNOSIS 21 8 TRANSMISSION AND TRANSFER CASE ZG ...