Content .. 355 356 357 358 ..

Acura RL. Manual - part 357

Faulty solenoid

See On-Vehicle Tests in

STARTER article

Poor grounds

Check all ground connections

for tight and clean connections

Ignition switch faulty or misadjusted

Adjust or replace ignition

switch as necessary

Starter Cranks Engine Slowly

Battery weak or defective

Charge or replace battery as

necessary

Engine overheated

See ENGINE COOLING

SYSTEM article

Engine oil too heavy

Check that proper viscosity oil

is used

Poor battery-to-starter connections

Check that all between battery

and starter are clean and tight

Current draw too low or too high

See Bench Tests in STARTER

article

Bent armature, loose pole shoes screws or worn bearing

See STARTER article

Burned solenoid contacts

Replace solenoid

Faulty starter

Replace starter

Starter Engages Engine Only Momentarily

Engine timing too far advanced

See Ignition Timing in TUNE-

UP article

Overrunning clutch not engaging properly

Replace overrunning clutch.

See STARTER article

Broken starter clutch

See STARTER article

Broken teeth on engine flywheel

Replace flywheel and check

starter pinion gear for damage

Weak drive assembly thrust spring

See STARTER article

Weak hold-in coil

See Bench Tests in STARTER

article

Starter Drive Will Not Engage

Defective point assembly

See Testing in STARTER

article

Poor point assembly ground

See Testing in STARTER

article

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

2007 Acura RL

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Friday, June 05, 2009 2:26:48 PM

Page 7

AIR CONDITIONING & HEAT

AIR CONDITIONING TROUBLE SHOOTING

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 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 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.

2007 Acura RL

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Friday, June 05, 2009 2:26:48 PM

Page 8

BASIC AIR CONDITIONING TROUBLE SHOOTING CHART

HEATER SYSTEM TROUBLE SHOOTING

BASIC HEATER SYSTEM TROUBLE SHOOTING CHART

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.

.....

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

2007 Acura RL

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Friday, June 05, 2009 2:26:48 PM

Page 9

BRAKES

BRAKE SYSTEM TROUBLE SHOOTING

BRAKE SYSTEM TROUBLE SHOOTING CHART

.....

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.

.....

Oil residue on heater core fins.

.....

Dirt on heater core fins.

Too Much Heat

Improperly adjusted cables.

.....

Sticking heater control valve.

.....

No vacuum to heater control valve.

.....

Temperature door stuck open.

Air Flow Changes During
Acceleration

Vacuum system leak.

.....

Bad check valve or reservoir.

Air From Defroster At All Times

Vacuum system leak.

.....

Improperly adjusted control cables.

.....

Inoperative vacuum motor.

Blower Does Not Operate Correctly

Blown fuse.

.....

Blower motor windings open.

.....

Resistors burned out.

.....

Motor ground connection loose.

.....

Wiring harness connections loose.

.....

Blower motor switch inoperative.

.....

Blower relay inoperative.

.....

Fan binding or foreign object in housing.

.....

Fan blades broken or bent.

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 SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are
accessing.

CONDITION & POSSIBLE CAUSE

CORRECTION

2007 Acura RL

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Friday, June 05, 2009 2:26:48 PM

Page 10

Content .. 355 356 357 358 ..