Headlamp High Beam Indicator Lamp; Low Fuel Warning Lamp; Malfunction Indicator Lamp - Jeep 1996 Grand Cherokee Service Manual

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DIAGNOSIS AND TESTING (Continued)
(3) Disconnect and isolate the battery negative
cable. Remove the GDM as described in this group.
Unplug the GDM connector.
(4) Check the continuity of the circuit for the indi-
cator lamp or wheel lamp that is not functioning
between the GDM and transfer case switch connec-
tors. There should be continuity. If OK, go to Step 5.
If not OK, repair the open circuit as required.
(5) Replace the bulb for the inoperative indicator
lamp or wheel lamp. Plug in the GDM and transfer
case connectors. Connect the battery negative cable
and check the operation of the inoperative lamp. If
OK, discard the faulty bulb. If not OK, replace the
faulty GDM.

HEADLAMP HIGH BEAM INDICATOR LAMP

The diagnosis found here addresses an inoperative
headlamp high beam indicator lamp condition. If the
problem being diagnosed is related to inoperative
headlamp high beams, refer to Group 8L - Lamps for
diagnosis of the headlamp system. For circuit
descriptions and diagrams, refer to 8W-40 - Instru-
ment Cluster in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO
RESTRAINT SYSTEMS
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
If the headlamp high beam indicator lamp fails to
light during the bulb test (about four seconds after
the ignition switch is turned to the On position),
replace the headlamp high beam indicator lamp bulb
with a known good unit. If the indicator lamp still
fails to operate, diagnosis of the lamp, the gauge
cluster circuitry, the CCD data bus, and/or the body
control module should be performed with a DRB scan
tool as described in the proper Body Diagnostic Pro-
cedures Manual.

LOW FUEL WARNING LAMP

The diagnosis found here addresses an inoperative
low fuel warning lamp condition. If the problem
being diagnosed is related to lamp accuracy, be cer-
tain to confirm the problem is the with the low fuel
warning lamp and not with the fuel gauge circuit.
See the diagnosis for the Fuel Gauge in this group. If
no fuel gauge problem is found, the following proce-
dure will help to identify a faulty low fuel warning
lamp circuit. For circuit descriptions and diagrams,
refer to 8W-40 - Instrument Cluster in Group 8W -
Wiring Diagrams.
GROUP 8M - PASSIVE
BEFORE ATTEMPTING
STEERING COLUMN,
INSTRUMENT PANEL SYSTEMS
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER
RESTRAINT SYSTEMS
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
If the low fuel warning lamp fails to light during
the bulb test (about four seconds after the ignition
switch is turned to the On position), replace the low
fuel warning lamp bulb with a known good unit. If
the indicator lamp still fails to operate, diagnosis of
the lamp, the gauge cluster circuitry, the CCD data
bus, and/or the body control module should be per-
formed with a DRB scan tool as described in the
proper Body Diagnostic Procedures Manual. Diagno-
sis of the fuel gauge sending unit and circuit, and/or
the powertrain control module should be performed
with a DRB scan tool as described in the proper Pow-
ertrain Diagnostic Procedures Manual.

MALFUNCTION INDICATOR LAMP

The diagnosis found here addresses an inoperative
malfunction indicator lamp condition. If the lamp
comes on and stays on with the engine running, refer
OR
to Group 14 - Fuel System for diagnosis. For circuit
descriptions and diagrams, refer to 8W-40 - Instru-
ment Cluster in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER
RESTRAINT SYSTEMS
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
If the malfunction indicator lamp fails to light dur-
ing the bulb test (about three seconds after the igni-
tion switch is turned to the On position), replace the
malfunction indicator lamp bulb with a known good
unit. If the indicator lamp still fails to operate, diag-
nosis of the lamp, the gauge cluster circuitry, and/or
the CCD data bus should be performed with a DRB
scan tool as described in the proper Body Diagnostic
Procedures Manual. Diagnosis of the powertrain con-
trol module should be performed with a DRB scan
tool as described in the proper Powertrain Diagnostic
Procedures Manual.
TO GROUP 8M -
BEFORE ATTEMPTING
STEERING COLUMN,
TO GROUP 8M -
BEFORE ATTEMPTING
STEERING COLUMN,
8E - 15
PASSIVE
OR
PASSIVE
OR