tires PONTIAC FIERO 1988 Service Repair Manual

1988
SER
This manual applies to the 1988 Pontiac Firebird Models.
It contains the latest product information available at the
time of publication approval. lnformation pertaining to
the operation of the vehicle is contained in the Owner's
Manual which accompanies each vehicle. The right is
reserved to make changes at any time without notice.
Any references to brand names in this manual is intended
merely as an example of the types of
lubricant% tools,
materials, etc, recommended for use in servicing 1988
Pontiac Models. In all cases, an equivalent may be used.
PONTIAC DIVISION
GENERAL
MOTORS CORPORATION
PONTIAC, MICHIGAN 48053
1987 General Motors Corp. All Rights Reserved.
No part of this publication may be reproduced, stored in any
retrieval system or transmitted in any form or by any means,
including but not limited to electronic, mechanical,
photocopying, recording or otherwise, without the prior written
permission of General Motors Corp. This includes all text,
illustrations, tables and charts.
S-881 OF 9-87 Printed in Canada
TABLE OF CONTENTS
SECTION NAME
GENERAL INFORMATION
OA. General lnformation
OB. Maintenance & Lubrication
1 SECT.
HEATING AND AIR CONDITIONING
1A. Heating and Ventilation
1 B. Air Conditioning
1D1. R-4 AIC Com~ressor Overhaul
FRAME AND BUMPERS
2B. Bumpers 2C. Chassis Sheet Metal
STEERING, SUSPENSION, WHEELS
AND TIRES
3. Diagnosis
3A. Wheel Alignment
3B5. Steering Wheels and Columns 3B6. Steering Linkage 3B7. Power Steering Gear and Pump
3C. Front Suspension
3D. Rear Suspension
3E. Tires and Wheels
FINAL DRIVE
4A. Propeller Shaft
4B. Rear Axle
4B1. Bora-Warner Axle
BRAKES 5. Brakes 5A3. Comoosite Master Cvlinder 5B1. Disc r rake Caliper ~ssembly - 300013100 Series 5B6. Disc Brake Caliper Assembly - 3548
Series
5C3. Direct Torque Drum Brake Assembly 5D2. Power Head Assembly - Tandem Diaohraam 5F. ~~ecifications and Special Tools
ENGINE 6. Engine General lnformation 6A2. 2.8L 6A3. 5.OL & 5.7L 6B. Engine Cooling
6C. En~ine Fuel
6D. ~ngine Electrical 6D1. Battery 6D2. Cranking System 6D3. Charging System 6D4. Ignition System 6D5. Engine Wiring
6E. Driveabilitv and Emissions
6E2. ~missions' 6E3. Emissions - PFI
6F. Engine Exhaust
TRANSMISSION 7A. Automatic Transmission - General
lnformation
7A1. Automatic Transmission - On-Car
Service
700R4. Automatic Transmission Hydraulic Diagnosis
700R4. Automatic Transmission Unit Repair
76. 5-Speed Manual Transmission
7C. Clutch
CHASSIS ELECTRICAL 8A. Electrical Diagnosis
8B. Lighting and Horns
8C. Instrument
Panel, Gages
& Console
8E. Windshield Wiper &Washer System
ACCESSORIES 9A. Radio Systems and Antennas 9B. Cruise Control 9G. Miscellaneous Accessories
I BODY SERVICE MANUAL END
OF
MANUAL

OB-4 MAINTENANCE AND LUBRICATION
Tire and wheel operation - Be alert to a vibra-
tion of the steering wheel or seat at normal highway
speeds. This may mean a wheel balance is needed. Also, a
pull right or left on a straight, level road may show the
need for
a tire pressure adjustment or wheel alignment.
Steering system operation - Be alert to
changes in steering action. An inspection is needed when
the steering wheel is harder to turn or has too much free
play or if unusual sounds are noted when turning or
parking.
Headlight aim operation - Take note of light
pattern occasionally. If beam aim doesn't look right,
headlights should be adjusted.
AT EACH FUEL FILL
Engine oil level check - Check engine oil level
and add if necessary. See your Owner's
Manual for further
details.
NOTICE: A large loss in this system may indicate a
problem. Have it inspected and repaired at once.
Engine coolant level and condition - Check
engine coolant level in coolant reservoir tank and add if
necessary. Replace if dirty or rusty. See your Owner's
Manual for further details.
NOTICE: A large loss in this system may indicate a
problem. Have it inspected and repaired at once.
Windshield washer fluid level check -- Check
washer fluid level in container and add if necessary.
Hood latch operation - When opening hood on
cars equipped with hoods that open from the front, note
the operation of secondary latch. It should keep hood from
opening all the way when primary latch is released. Make
sure that hood closes firmly.
AT LEAST MONTI-ILY
Tire and wheel inspection and pressure
check--
Check tires for abnormal wear or damage. Also,
check for damaged wheels. Keep pressures as shown on
Tire Placard on the driver's door (include spare unless it is
a stowaway). Pressure should b\: checked when tires are
"cold". See "Tires" in Owner's Manual for further
infomation.
Light operation check - Check operation of
license plate light, side-marker lights, headlights includ-
ing high beams, parking lights, taillights, brake lights.
turn signals, backup lights, instrument panel and interior
lights and hazard warning flashers.
Fluid leak check - After the car has been parked
for a while, inspect the surface beneath the car for water,
oil, fuel or other fluids. Water dripping from the air
conditioning system after use is normal. If you notice fuel
leaks or fumes, the cause should be found and corrected at
once.
AT LEAST TWICE A YEAR (FOR EXAMPLE,
EVERY SPRING AND FALL)
Power steering pump fluid level check --
Check power steering pump fluid level in accordance with
Owner's Manual instructions and keep at proper level.
NOTICE: A large loss in this system may indicate a
problem. Have it inspected and repaired at once.
Brake master cylinder reservoir fluid level
check ---- Check fluid and keep at proper level. Note: It is
normal for the brake fluid level to go down slightly as the
brake pads wear
- so be sure to keep reservoir filled.
NOTICE: A large loss in this system may indicate a
problem. Have
it inspected and repaired at once.
Clutch system service --- manual transmis-
sionltransaxle --- For cars equipped with hydraulic
clutch system, check the reservoir fluid level and add fluid
as required. All others, check clutch pedal free travel and
adjust as necessary. See your Owner's Manual for further
details.
~
NOTICE: A large loss in this system may indicate a
problem. Have it inspected and repaired at once.
Weatherstrip Lubrication - Clean surface and
then apply a thin film of silicone grease with a clean cloth.
EACH TIME OIL IS CHANGED
Automatic and manual transmissionltrans-
axle fluid level check - Check transmission/transaxle
fluid level and add as required. (Corvette only) if equipped
with manual transmission
- check fluid in the overdrive
unit and add as required.
NOTICE: A large loss in this system may indicate a
problem. Have
it inspected and repaired at once.
Brake systems inspection - For convenience,
the following should be done when wheels are removed
for rotation: Inspect lines and hoses for proper hookup,
binding, leaks, cracks, chafing, etc. Inspect disc brake
pads for wear and rotors for surface condition. Also in-
spect drum brake linings for wear and cracks. Inspect
other brake parts, including drums, wheel cylinders, park-
ing brake, etc. at the same time. Check parking brake
adjustment.
INSPECT BRAKES MORE OFTEN IF DRIVING
HABITS OR CONDITIONS RESULT IN FREQUENT
BRAKING.
Steering, suspension and front drive axle
boot and seal inspection
- Inspect front and rear
suspension and steering system for damaged, loose or
missing parts, signs of wear or lack of lubrication. Inspect
power steering lines and hoses for proper hookup, bind-
ing, leaks, cracks, chafing, etc. (On cars equipped with
manual steering gear, check for seal leakage.) On
front-
wheel-drive cars, clean then inspect drive axle boot seals
for damage, tears or leakage. Replace seals if necessary.
Exhaust system inspection - Inspect complete
system. Inspect body near the exhaust system. Look for
broken, damaged, missing or out-of-position parts as well
as open seams, holes, loose connections or other condi-
tions which could cause a heat buildup in the tloor pan or
could let exhaust fumes seep into the trunk or passenger
compartment.

STEERING, SUSPENSION, f IRES AND WHEELS DIAGNOSIS 3.1
SECVION 3
STEER NG, SUSPENS
WHEELS
AGNOS
CONTENTS
........................................... General Information 3- 1 ............................................ General Diagnosis 3- 1
Power Recirculating Ball .................................. 3-3
................. Steering Linkage ........................ .. 3-3
Power Steering Pump ................... ... ............ 3-4
Steering Column
Lock System
........................... ... ................ 3-4
Column ............................................................ 3-5
........................................ Turn Signal Switch 3-6
Ignition Switch .............................................. 3-7
Key Reminder .............................................. 3-7
Dimmer Switch .................... ... ................ 3-10
Pivot and Switch Assembly ............................ 3-10
Steering Gear and Pump Leaks .......................... 3- 10
Seal Replacement Recommendations ................. 3- 10
Power Steering System Test Procedure .............. 3-12
................ Strut Dampener and Shock Absorber 3- 12
Tires ........................ .. ..................................... 3- 13
Vibrations .......................... .............. .................... 3- 14
.......................... Tapered Roller Bearings .. .... 3- 14
Trim Height .............................................. 3-14
GENERAL INFORMATION Abnormal or Excessive Tire Wear
Since the problems in steering, suspension, tires
and wheels involve several systems, they must all be
considered when diagnosing a complaint. To avoid
e Front-wheel or rear-wheel alignment
using the wrong symptom, always road test the car
o Sagging or broken springs
first. Proceed with the following preliminary checks
Tire out of balance and correct any substandard conditions which are worn strut dampener or shock absorber found. o Hard driving
--
e Tires for wrong pressure and uneven wear
o Joints from the column to the steering gear for
loose connectors or wear
o Front and rear suspension, and the steering gear
or linkage for loose or damaged parts
Out-of-round or out-of-balance tires, bent wheels,
and loose and/or rough wheel bearings
@ Power steering system for leaks. Also check the
power steering fluid level and the pump drive belt
tension
GENERAL DIAGNOSIS
Car Pulls (Leads)
Inspect
Mismatched or uneven tires
Broken or sagging springs
Radial tire lateral force
Front-wheel or rear-wheel alignment
o Steering gear valve off center (unbalanced)
e Front brakes dragging
a Overloaded car
e Not rotating tires
Scuffed Tires
o Toe incorrect
e Excessive speed on turns
o Suspension arm bent or twisted
Wheel Tramp
Inspect
o Blister or bump on tire
o Improper strut dampener or shock absorber
action
Shimmy, Shake or Vibration
inspect
e Tire or wheel out of balance
e Worn wheel bearings
a Worn tie rod ends
o Worn lower ball joints

3-2 STEERING, SUSPENSION, TIRES AND WHEELS DIAGNOSIS
o Excessive wheel runout
e Blister or bump on tire
e Excessive loaded radial runout of tire and wheel
assembly
Hard Steering (Power)
lnspect
e Hydraulic system - Make test with gage J 5176
or J 25323
e Steering gear adjustment
e Bind or catch in steering gear
e Loose steering gear mounting
e Steering gear pressure port check valve (800
series)
Too Much Play In Steering
a lnspect
e Wheel bearings worn
e Loose steering gear mounting
e Joints from column to steering gear loose or worn
e Steering gear adjustment
Poor Returnability (Power)
Inspect
e Lack of lubrication - ball joints and tie rod ends
o Bind in ball joints
o Rind in steering column
e Front-wheel alignment
e Steering gear adjustment
e Sticking valve
o Steering gear adjustment
e Lower coupling binding on steering gear
Abnormal Noise, Front End
lnspect
Lubrication - ball joints and tie rod ends
Damaged suspension components
Worn control arm bushings or tie rod ends
Imose stabilizer shaft
Loose wheel nuts
Loose suspension bolts
Wheel covers
Steering gear adjustment
Worn strut dampener, shock absorbers or
n~ountings
Spring improperly positioned
Wander or Poor Steering Stability
Inspect
o Mismatched or uneven tires
e Lubrication - ball joints and tie rod ends
e Worn strut dampeners or shock absorbers
e Loose stabilizer shaft Broken
or sagging springs
e Steering gear adjustment
e Front-wheel or rear-wheel alignment
Erratic Steering When Braking
lnspect
e Wheel bearings worn
e Broken or sagging springs
e Leaking wheel cylinder or caliper
Warped rotors
e Incorrect or uneven caster
Low Or Uneven Trim Height
e Broken or sagging springs
@ Overloaded car
e Incorrect or weak springs
Ride Too Soft
Inspect
e Worn strut dampeners or shock absorbers
e Incorrect or sagging springs
Ride Too Harsh
lnspect -
e Incorrect strut dampeners or shock absorbers
e Incorrect springs
Body Leans Or Sways In Corners
lnspect
e Loose stabilizer shaft
e Worn strut dampeners, shock absorbers or
mounting
a Broken or sagging springs
e Overloaded car
Suspension Bottoms
lnspect
a Overloaded car
e Worn strut dampeners or shock absorbers
e Incorrect, broken or sagging spring
"Dog" Tracking
lnspect
e Damaged rear suspension arm or worn bushings
e Bent rear axle
e Frame or underbody alignment incorrect

STEERING, SUSPENSION, VIBES AND WHEELS DIAGNOSIS 3-3
Steering Wheel Kick-Back (Power)
Inspect
e Air in system
e Loose steering gear mounting
e Joints from column to steering gear loose or worn
e Tie rod ends loose
Worn or missing check valve
(800 series)
e Wheel bearings worn
e See "Too Much Play In Steering" for other
possible causes.
Steering Wheel Surges Or Jerks (Power)
Inspect
Hydraulic system - Make pressure test with gage
J 5176-D or
J 25323
e Sluggish steering gear valve
Loose pump drive belt
Cupped Tires
Inspect
Front-wheel or rear-wheel alignment
e Strut dampeners or shock absorbers weak
e Wheel bearing worn
e Excessive tire or wheel runout
e Worn ball joint
a Loose steering gear adjustment
POWER RECIRCULATING BALL
SEERING GEAR DIAGNOSIS
Hissing Noise
There is some noise in all power steering systems.
One of the most common is a hissing sound when the
steering wheel is turned and the car is not moving. This
noise will be most evident when turning the wheel
while the brakes are applied. There is no relationship
between this noise and steering performance. Do not
replace the valve unless the "hissing" noise is extremely
objectionable. A replacement valve will also have a
slight noise, and is not always a cure for the condition.
Check that the intermediate shaft joints are not loose.
Rattle or Chucking Noise
Inspect -
Pressure hose grounding out
e Tie rod ends loose
e Steering gear attachment loose
a Loose pitman shaft "over-center" adjustment.
A slight rattle may occur on turns because of
increased clearance off the "high point". This is
normal and clearance must not be reduced below
specified limits to eliminate this slight rattle.
Poor Return of Steering Wheel to Center
Front-wheel alignment
Wheel bearing worn
Tie rod end binding
Ball joint binding
Steering wheel rubbing against turn signal
housing
Steering gear adjustments
Tight or frozen intermediate steering shaft
Sticky or plugged spool valve
Momentary Increase in Effort Whsn Turning
Wheel Fast to Right or Left
Inspect
High internal leakage
Steering Wheel Surges or Jerks When Turning
With
Engine Running Especially During Parking
ln8pe~t
e Insufficient pump pressure
Sticky flow control valve
Excessive Wheel Kickback or Loose Steering
Air in system
Steering gear attachment loose
Tie rod ends loose
Wheel bearings worn
Steering gear flexible coupling loose on shaft or
rubber disc mounting nuts loose
Loose thrust bearing preload adjustment
Excessive "over-center" lash
Worn pressure port check valve
Hard Steering or Lack of Assist
(Especially During Parking)
-
Brakes applied while turning steering wheel
Intermediate shaft damaged or worn
e Sticky flow control valve
Insufficient pump pressure
Excessive internal pump leakage
Excessive internal steering gear leakage
STEERING LINKAGE DIAGNOSIS
Excessive Play or Looseness in Steering Systern
inspect
r, Worn upper ball joints
e Steering gear worm bearings loosely adjusted

3.4 STEERING, SUSPENSION, TIRES AND WHEELS DIAGNOSIS
e Excessive pitman shaft to ball nut lash in steering
gear
e Worn intermediate rod or tie rod sockets
Excessive Looseness in Tie Rod or Intermediate
Rod Pivots, or Excessive Vertical Lash in
Idler
Support
Inspect -
e Seal damage and leakage resulting in loss of
lubricant, corrosion and excessive wear
Hard Steering
0 Inspect
e Tight or frozen intermediate rod, tie rod or idler
socket
e Steering gear adjusted too tight
POWER STEERING PUMP DIAGNOSIS
Foarning, Milky Power Steering Fluid, Low Fluid
Level, and Possible Low Pressure
This can be caused by air in the fluid, and loss of
fluid due to internal pump leakage causing overflow.
Check for leak and correct. Bleed the system.
Extremely cold temperatures will cause air bubbles in
the system if the fluid level is low. If the fluid level is
correct and pump still foams, remove pump from car
and separate reservoir from housing. Check soft plug
and housing for cracks. If housing is cracked, replace
housing.
Low Pressure Due to Steering Pump
Inspect
e Flow control valve stuck or inoperative
e Pressure plate not flat against cam ring
e Extreme wear of cam ring
e Scored pressure plate, thrust plate or rotor
e Vanes sticking in rotor slots
Q Cracked or broken thrust or pressure plate
e High internal leakage
Low Pressure Due To Steering Gear
Inspect
e Scored housing bore
Q Leakage at valve rings or seals
Growling Noise in Steering Pump
Inspect
e Excessive back pressure in hoses or steering gear
caused by restriction
e Scored pressure plates, thrust plate or rotor
e Worn cam ring
Groaning Noise in Steering Pump
Inspect
e Air in the fluid
Low fluid level
Q Pump mounting loose
Rattling Noise in Steering Pump
Inspect - -
e Vanes sticking in rotor slots
o Vane improperly installed
o Damaged ball bearing
Swishing Noise in Steering Pump
inspect
e Damaged flow control valve
Whining Noise in Steering Pump
Inspect
Q Pump shaft bearing scored
e Scored pressure plates and vanes
STEERING COLUMN DIAGNOSIS
LOCK SYSTEM
Will Not Unlock
Inspect
o Shear flange on sector shaft collapsed
Q Damaged lock bolt
e Damaged lock cylinder
o Damaged housing
e Damaged sector
e Damaged rack
e Damaged park lock cable
Will Not Lock
Inspect
Lock bolt spring broken or worn
Damaged sector
Damaged lock cylinder
Burr on lock bolt
Damaged housing
Improper shift linkage adjustment
Damaged rack
Interference between bowl and rack coupling
Ignition switch stuck
Actuator rod restricted
Sector installed incorrectly
Park lock cable damaged

STEERING. SUSPENSION. TIRES AND WHEELS DIAGNOSIS 3-5
High Lock Effort
rn lnspect
e Lock cylinder damaged
e Ignition switch damaged
o Rack preload spring broken or deformed
e Burrs on sector, rack, housing, support or
actuator rod coupling
,
e Bent sector shaft
e Damaged rack
e Extreme misalignment of' housing to cover
e Distorted coupling slot in rack
e Bent actuator rod
e Ignition switch mounting bracket bent
e Actuator rod restricted
e Improper shift linkage adjustment
Will Stick In "Start"
rn lnspect
e Actuator rod deformed
e Check items under "High Lock Effort"
Key Cannot Be Removed in "Off-Lock"
rn lnspect
e Ignition switch is not set correctly
e Damaged lock cylinder
e Linkage mis-adjusted
Lock Cylinder Can Be Removed
Inspect
e Lock cylinder retaining screw missing
High Effort In Lock Cylinder Between "Off" and
"Off-Lock"
lnspect
o Distorted rack
Lock Bolt Hits Shaft Lock In "Off" Position and
"Park"
lnspect
e Ignition switch is not set correctly
COLUMN
Noise In Column
Inspect
e Joints from the column to the steering gear 1
e Column not correctly aligned
e Horn contact ring not lubricated
e Lack of grease on bearings
o Loose sight shields
o Lower or upper steering shaft bearing worn or
broken
e Shaft lock snap ring not seated
o Spherical joint not lubricated
High Steering Shaft Effort
e Column assembly misaligned
e Improperly installed or deformed dust seal
e Damaged upper or lower bearing
e Flash on I.D. of shift tube
e Tight intermediate steering shaft universal joint
High Shift Effort (Automatic with Column Shift)
rn lnspect
e Column not aligned correctly in car
e Wave washer with burrs
e Improperly installed dust seal
o Lack of grease on seal or bearing
e Improper screws used for ignition switch
e Burr on upper or lower end of shift tube
e Lower bowl bearing not assembled correctly
Improper Shifting (Automatic with Column
Shift)
rn lnspect
e Sheared shift tube joint or lower shift lever weld
e Improper or loose linkage adjustment
e 1,oose shift lever
e Improper gate plate
Lash In Steering Column
lnspect
e 1.P.-to-column upper and lower bracket
nlounting bolts loose
e Broken weld nuts on jacket
e I.P. upper bracket capsule sheared
e Loose shoes in housing
e Loose tilt head pivot pins
e Loose shoe lock pin in support
e Loose support screws
e Column upper and lower bracket-to-jacket bolts
loose
e Loose lower bracket-to-adapter and bearing
assembly mounting screws
e Loose 1.P.-to-jacket mounting bolts
Housing Scraping On Bowl
rn Inspect
e Bowl bent or not concentric with hub
e Cover and housing end cap not properly installed

3-6 STEERING, SUSPENSION, TIRES AND WHEELS DIAGNOSIS
Steering Wheel Loose
lnspect
Excessive clearance between holes in support or
housing and pivot pin diameters
e Damaged or missing anti-lash spring in spheres
e Upper bearing not seated in housing
e Upper bearing inner race seal missing
e Loose support screws
e Bearing preload spring missing or broken
Steering Wheel Loose (Every Other Tilt Position)
lnspect
e Loose fit between shoe and shoe pivot pin
e Shoe not free in slot
Steering Column Not Locking In Any Tilt
Position
lnspect
e Shoe seized on its pivot pin
e Shoe grooves may have burrs or dirt
e Shoe lock spring weak or broken
Steering Wheel Fails To Return To Top Tilt
Position
Inspect
e Pivot pins are bound up
e Wheel tilt spring is broken or weak
e Turn signal switch wires too tight
Noise When Tilting Column
Inspect
e Upper tilt bumpers worn
e Tilt spring rubbing in housing
TURN SIGNAL SWITCH
This diagnosis covers mechanical problems only
See Section
8A for turn signal switch electrical diagnosis.
Turn Signal Will Not Stay In Turn Position
lnspect
e Foreign material or loose parts impeding
movement of yoke
e Broken or missing detent or cancelling spring
s None of the above, replace switch
Turn Signal Will Not Cancel
lnspect
a Loose switch mounting screws
e Switch or anchor bosses broken
e Broken, missing or out of position detent, return
or cancelling spring
Worn cancelling cam
Turn Signal Difficult To Operate
0 Inspect
e Turn signal switch arm loose
e Yoke broken or distorted, replace switch
e Loose or misplaced springs
e Foreign parts andlor material
o Loose turn signal switch mounting screws
Turn Signal Will Not Indicate Lane Change
a Inspect
e Broken lane change pressure pad or spring
hanger
e Broken, missing or misplaced lane change spring
e Jammed base or wires
Hazard Switch Cannol: Be Turned Off
a Inspect
e Foreign material between hazard support
cancelling leg and yoke
e If no foreign material is found, replace turn signal
switch.
Hazard Switch Will Not Stay On or Difficult To
Turn Off
e Loose turn signal switch
a Interference with other components
e Foreign material interference
e None of the above, replace turn signal switch
No Turn Signal Lights
lnspect
e Electrical failure in chassis harness
e Inoperative turn signal flasher
e Loose chassis-to-column connector. Disconnect
column-to-chassis connector and connect new
turn signal switch to chassis and operate switch
by hand.
A. If car lights now operate normally, turn
signal switch is inoperative.
B. If
car lights do not operate, refer to Section 8A
for electrical diagnosis.
Turn Indicator Lights On, But Not Flashing
a Inspect
e Inoperative turn signal flasher
Loose chassis-to-column connection
Inoperative turn signal switch

STEERING, SUSPENSION, TIRES AND WHEELS DIAGNOSIS 3-7
e To determine if turn signal switch is inoperative,
substitute new turn signal switch into circuit and
operate switch by hand.
If the car's lights operate
normally, turn signal switch is inoperative.
Front Or Rear Turn Signal Lights Not Flashing
Inspect
s Burned-out or damaged turn signal bulb
e High resistance conection to ground at bulb
socket
s Loose chassis-to-column connector. Disconnect
column-to-chassis connector and connect new
turn signal switch into system and operate switch
by hand.
A. If turn signal lights are now on and flashing,
turn signal switch is inoperative.
B. If car lights do not operate, refer to Section
8A
for electrical diagnosis.
Turn Indicator Panel Lights
Inspect
Burned out bulbs or opens, grounds in the wiring
harness from the front turn signal bulb socket to the
indicator lights. Refer to Section
8A for electrical
diagnosis.
Stop Light Mot On When Turn Indicated
Inspect
s Loose column-to-chassis connection
e Disconnect the column-to-chassis connector and
connect the new turn signal switch into the
system and operate the switch by hand.
A. If the brake lights work when the switch is
in the turn position, the turn signal switch
is inoperative.
B. If the brake lights do not work, refer to Section
8A for electrical diagnosis.
Turn Signal Lights Flash Very Slowly
e Loose chassis-to-column connection
a Disconnect the column-to-chassis connector and
connect a new turn signal switch into the system
and operate the switch by hand.
A. If the lights flash at a normal rate, the turn
signal switch is inoperative.
B. If the Lights still flash very slowly, refer to
Section
8A for electrical diagnosis.
Hazard Signal Lights Will Not Flash - Turn
Signal Functions Normally
~"SPBC~
a Blown fuse
Inoperative hazard warning flasher
e Loose chassis-to-column connection
s Disconnect the column-to-chassis connector and
connect a new turn signal switch into the system,
then press in the hazard warning button and
watch the hazard warning lights.
A. If the lights now work normally, the turn
signal switch is inoperative.
B. If the lights do not flash, check the wiring
harness. Refer to Section
8A for electrical
diagnosis.
IGNITION SWITCH
Electrical System Will Not Function
Damaged ign~rion switch
e Ignition switch not adjusted properly
e Loose connector at the ignition switch
Switch Will Not Turn
Inspect
Damaged ignition switch
Switch Cannot Be Set Correctly
Inspect
Switch actuator rod deformed
e Sector to rack engaged in wrong tooth
KEY REMINDER
Figs. 1 through 11 ,
Weminder Continues To Operate With Key Out,
But Stops When Driver's Door Is Closed
e Chips, foreign material in lock cylinder bore
Sticky lock cylinder actuator tip
Damaged or broken reminder switch
Reminder Does Not Sound With Key Fully
Inserted In Lock Cylinder And The Driver's Door
Open
Inspect
1. Power not available to reminder. Refer to Sec-
tion
8A for electrical diagnosis.
2. Open in chassis wiring. Check by separating
chassis-to-column connector. Connect terminals
"E" and "F" female contacts on the chassis
connector (a bent paper clip will work). If the
reminder sounds, repair chassis wiring. If the
reminder does not sound, go to Step
A.
A. Connect a continuity meter (light) to the
male
"E" and "F" column connector
contacts. Push the key all the way into the
lock cylinder. If the light is on when the key

3-8 STEERING. SUSPENSION. TIRES AND WHEELS DIAGNOSIS
is in, and off when the key is out, the
function is normal. If the light is not on, the
fault is in the column. Go to Step B.
Fig. 1 Checking Reminder at Chassis Connector
Fig.
2 Checking Reminder at Column Connector
B. Disassemble the upper end of the column
until the turn
signal switch mounting
screws have been
removed. Lift the turn
signal switch and check the probes of the
reminder switch to ensure good contact
with the pads on the signal switch. Bend the
probes, if needed, then replace the turn
signal switch and tighten the three screws.
Check the function as in Step
A.
3. Short or fault in the turn signal switch wiring.
Connect male
"E" and "F" contacts of column
connector with jumper. Check key reminder
switch pads on turn signal switch with continuity
meter. If there is continuity, the function is
normal. If not, replace the turn signal switch. the
key is in the lock cylinder, and off when the
key is out, the function is normal. Retrace the
diagnostic steps starting at Step
A. If the light is
not on, the fault is in the lock cylinder or
reminder switch.
Chips, burrs, or foreign material in the lock
cylinder preventing actuator tip function.
Remove chips, burrs, etc. Reassemble and
recheck (Step 4). The key must be removed, or
the cylinder must be in the "Run" position,
before the lock cylinder can be removed.
Fig. 3 Checking Reminder Switch Pads
6. Damaged lock cylinder. With the lock cylinder
removed, push the key all the way in, then
remove it. The lock cylinder actuator tip should
extend and retract smoothly. Total extension of
tip should be
1.27 mm (.05OU). If not, replace the
lock cylinder. Remove and clean as required.
Reassemble
and recheck per Step 4.
Fig. 4 Checking Reminder Switch
4.. If the problem has not been found, connect a 7. switch appears good but will not operate, continuity meter (light) to the reminder switch
Connect continuity meter leads to the reminder
probes on the switch. Fully insert and remove the
switch probes on the switch. Press on the actuator
key from the lock cylinder. If the light is on when