1991 · Поиск неисправностей — страница 10

BASIC HEATER SYSTEM TROUBLE SHOOTING CHART · 10

1991-Montero-Service-Manual · trouble shooting · страница 10 из 63 · Открыть оригинал PDF ↗

problem symptoms. For model-specific Trouble Shooting,
refer to DIAGNOSTIC, or TESTING articles available in the
section(s) you are accessing.

BASIC HEATER SYSTEM TROUBLE SHOOTING CHART

CONDITIONPOSSIBLE CAUSE
Insufficient, Erratic,
or No Heat
Low Coolant Level

Incorrect thermostat.

Restricted coolant flow through
heater 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 HeatImproperly 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.
Таблица в оригиналеТаблица: оригинал страницы 10

BRAKES

BRAKE SYSTEM TROUBLE SHOOTING

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.

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problem symptoms. For model-specific Trouble Shooting,
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