Starting System Testing - Jeep Cherokee 2000 Service Manual

XJ
DIAGNOSIS AND TESTING (Continued)
Condition
Starter engages, fails to
turn engine.
Starter engages, spins
out before engine starts.
Starter does not
disengage.
TESTING
Before testing the starting system perform a visual
inspection of the starting system components and
connections. Refer to Starting System in the index
of this service manual for the location of the proper
starting system cleaning and inspection procedures.
COLD CRANKING TEST
Refer to Starting System in the index of this ser-
vice manual for the location of complete starting sys-
Starting System Diagnosis
Possible Cause
1. Battery discharged or
faulty.
2. Starting circuit wiring
faulty.
3. Starter motor faulty.
4. Engine seized.
1. Starter ring gear faulty.
2. Starter motor faulty.
1. Starter motor
improperly installed.
2. Starter relay faulty.
3. Ignition switch faulty.
4. Starter motor faulty.
1. Refer to Battery in the index of this service manual for
the location of the proper battery diagnosis and testing
procedures. Replace the faulty battery, as required.
2. Refer to Starting System in the index of this service
manual for the location of complete starting system wiring
diagrams. Test and repair the faulty starter feed and/or
control circuits, as required.
3. Refer to Starter Motor in the index of this service
manual for the location of the proper starter motor
diagnosis and testing procedures. Replace the faulty
starter motor, as required.
4. Refer to Engine Diagnosis in the index of this service
manual for the location of the proper engine diagnosis
and testing procedures. Repair or replace the faulty
engine, as required.
1. Refer to Starter Motor in the index of this service
manual for the location of the proper starter motor
removal and installation procedures. Remove the starter
motor to inspect the starter ring gear. Replace the faulty
starter ring gear, as required.
2. Refer to Starter Motor in the index of this service
manual for the location of the proper starter motor
diagnosis and testing procedures. Replace the faulty
starter motor, as required.
1. Refer to Starter Motor in the index of this service
manual for the location of the proper starter motor
installation procedures. Tighten the starter motor
mounting hardware to the correct tightness specifications,
as required.
2. Refer to Starter Relay in the index of this service
manual for the location of the proper starter relay
diagnosis and testing procedures. Replace the faulty
starter relay, as required.
3. Refer to Ignition Switch and Key Lock Cylinder in the
index of this service manual for the location of the proper
ignition switch diagnosis and testing procedures. Replace
the faulty ignition switch, as required.
4. Refer to Starter Motor in the index of this service
manual for the location of the proper starter motor
diagnosis and testing procedures. Replace the faulty
starter motor, as required.
tem wiring diagrams. Before performing this test, be
certain that the following procedures are accom-
plished:
• The battery is fully-charged and load tested.
Refer to Battery Charging in the index of this ser-
vice manual for the location of the proper battery
charging procedures. Refer to Battery in the index of
this service manual for the location of the battery
diagnosis and testing procedures, including the
proper battery load test procedures.
STARTING SYSTEMS
Correction
8B - 5