Honda Civic. Manual — part 305

Defective pull-in coil

Replace starter

solenoid

Starter Relay Does Not Close

Dead battery

Charge or replace

battery as necessary

Faulty wiring

Check all wiring and

connections leading to

relay

Neutral safety switch faulty

Replace neutral safety

switch

Starter relay faulty

Replace starter relay

Starter Drive Will Not Disengage

Starter motor loose on mountings

Tighten starter attach

bolts

Worn drive end bushing

See STARTER article

Damaged engine flywheel teeth

Replace flywheel and

starter pinion gear for

damage

Drive yolk return spring broken or missing

Replace return spring

Faulty ignition switch

Replace ignition switch

Insufficient clearance between winding leads to
solenoid terminal and main contact in solenoid

Replace starter

solenoid

Starter clutch not disengaging

Replace starter clutch

Ignition starter switch

Replace ignition switch

contacts sticking

Starter Relay Operates but Solenoid Does Not

Faulty solenoid switch, switch connections or
relay

Check all wiring

between relay and

solenoid or replace

relay or solenoid as

necessary

Broken lead or loose soldered connections

Repair wire or wire

connections as

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures

AIR CONDITIONING & HEAT

AIR CONDITIONING TROUBLE SHOOTING

necessary

Solenoid Plunger Vibrates When Switch is Engaged

Weak battery

Charge or replace

battery as necessary

Solenoid contacts corroded

Clean contacts or

replace solenoid

Faulty wiring

Check all wiring

leading to solenoid

Broken connections inside switch cover

Repair connections or

replace solenoid

Open hold-in wire

solenoid

Low Current Draw

Worn brushes or weak brush springs

Replace brushes or

brush springs as

necessary

High Pitched Whine During Cranking Before Engine Fires but Engine Fires
and Cranks Normally

Distance too great between starter pinion and
flywheel

Align starter or check

that correct starter and

flywheel are being

used

High Pitched Whine After Engine Fires With Key released. Engine Fires and
Cranks Normally

Distance too small between starter pinion and
flywheel

Flywheel runout

contributes to the

intermittent nature

WARNING:

This is GENERAL information. This article is not
intended to be specific to any unique situation or
individual vehicle configuration. The purpose of this

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures

BASIC AIR CONDITIONING TROUBLE SHOOTING CHART

Trouble Shooting information is to provide a list of
common causes to problem symptoms. For model-
specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the
section(s) you are accessing.

CONDITION

POSSIBLE CAUSE

Compressor Not
Working

Compressor clutch circuit open.

. .

Compressor clutch coil inoperative.

. .

Poor clutch ground connection.

. .

Fan belts loose.

. .

Thermostatic switch inoperative.

. .

Thermostatic switch not adjusted.

. .

Ambient temperature switch open.

. .

Superheat fuse blown.

Excessive Noise or
Vibration

Missing or loose mounting bolts.

. .

Bad idler pulley bearings.

. .

Fan belts not tightened correctly.

. .

Compressor clutch contacting body.

. .

Excessive system pressure.

. .

Compressor oil level low.

. .

Damaged clutch bearings.

. .

Damaged reed valves.

. .

Damaged compressor.

Insufficient or No
Cooling; Compressor
Working

Expansion valve inoperative.

. .

Heater control valve stuck open.

. .

Low system pressure.

. .

Blocked condenser fins.

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures

HEATER SYSTEM TROUBLE SHOOTING

BASIC HEATER SYSTEM TROUBLE SHOOTING CHART

. .

Blocked evaporator fins.

. .

Vacuum system leak.

. .

Vacuum motors inoperative.

. .

Control cables improperly adjusted.

. .

Restricted air inlet.

. .

Mode doors binding.

. .

Blower motor inoperative.

. .

Temperature above system capacity.

NOTE:

This is GENERAL information. This article is not intended to
be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to DIAGNOSTIC, or TESTING articles available in the
section(s) you are accessing.

CONDITION

POSSIBLE CAUSE

Insufficient, Erratic, or No
Heat

Low Coolant Level

. .

Incorrect thermostat.

. .

Restricted coolant flow through core.

. .

Heater hoses plugged.

. .

Misadjusted control cable.

. .

Sticking heater control valve.

. .

Vacuum hose leaking.

. .

Vacuum hose blocked.

. .

Vacuum motors inoperative.

. .

Blocked air inlet.

. .

Inoperative heater blower motor.

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures