Jeep 1996 Grand Cherokee Service Manual page 258

ZJ
DIAGNOSIS AND TESTING (Continued)
• Park/Neutral Position Switch - Visually inspect
the park/neutral position switch for indications of phys-
ical damage and loose or corroded wiring connections.
• Starter Relay - Visually inspect the starter
relay for indications of physical damage and loose or
corroded terminal connections.
CONDITION
STARTER FAILS TO
ENGAGE.
STARTER ENGAGES,
FAILS TO TURN
ENGINE.
STARTER ENGAGES,
SPINS OUT BEFORE
ENGINE STARTS.
STARTER DOES NOT
DISENGAGE.
Starting System Diagnosis
POSSIBLE CAUSE
1. Battery discharged or faulty.
2. Starting circuit wiring faulty.
3. Starter relay faulty.
4. Ignition switch faulty.
5. Park/Neutral position switch (auto trans)
faulty or misadjusted.
6. Starter solenoid faulty.
7. Starter assembly faulty.
1. Battery discharged or faulty.
2. Starting circuit wiring faulty.
3. Starter assembly faulty.
4. Engine seized.
1. Broken teeth on starter ring gear.
2. Starter assembly faulty.
1. Starter improperly installed.
2. Starter relay faulty.
3. Ignition switch faulty.
4. Starter assembly faulty.
STARTING SYSTEMS
• Starter - Visually inspect the starter for indica-
tions of physical damage and loose or corroded wiring
connections.
• Starter Solenoid - Visually inspect the starter
solenoid for indications of physical damage and loose
or corroded wiring connections.
• Wiring - Visually inspect the wiring for damage.
Repair or replace the faulty wiring, as required.
1. Refer to Group 8A - Battery. Charge or
replace battery, if required.
2. See Cold Cranking Test, in this group. Test
and repair feed and/or control circuits, if
required.
3. See Relay Test, in this group. Replace
relay, if required.
4. See Ignition Switch Test, in this group.
Replace switch, if required.
5. See Park/Neutral Position Switch Test, in
this group. Replace switch, if required.
6. See Solenoid Test, in this Group. Replace
starter assembly, if required.
7. If all other starting system components
and circuits check OK, replace starter
assembly.
1. Refer to Group 8A - Battery. Charge or
replace battery, if required.
2. See Cold Cranking Test, in this group. Test
and repair feed and/or control circuits, if
required.
3. If all other starting system components
and circuits check OK, replace starter
assembly.
4. Refer to Group 9 - Engine, for diagnostic
and service procedures.
1. Remove starter as described in this
group. Inspect ring gear on torque converter
or flywheel and replace, if required.
2. If all other starting system components
and circuits check OK, replace starter
assembly.
1. Install starter as described in this group.
Tighten starter mounting hardware to
correct torque specifications.
2. See Relay Test, in this group. Replace
relay, if required.
3. See Ignition Switch Test, in this group.
Replace switch, if required.
4. If all other starting system components
and circuits check OK, replace starter
assembly.
8B - 3
CORRECTION