Geely Diagnosis Flow. Manual part — 84

333

No. 238 Weak running of blower

Malfunction Cause

Solution

Malfunction of battery

Check if the voltage of battery reaches to 12.5 – 12.9V, if the over-low
voltage results in weak running of blower, the battery should be charged
or replaced ;

Worn-out or poor contact of
blower carbon brush

Replace blower assembly

Malfunction of blower coil

Check blower coil for short-circuit; check and measure if over-big
adjusting resistance of blower results in weak running; if it’s abnormal, the
blower assembly should be replaced;

Weak running of
blower

Malfunction of blower adjusting
resistance

Replace blower adjusting resistance;

Over-big resistance or short-circuit of blower coil

Replace blower
motor

Blocking or unsmooth running of blower blades

Replace blower
assembly

Weak running of blower

Over-low voltage for blower

Charge or replace battery

Abnormal

Normal

Normal

Abnormal

Over-low

334

No. 239 Blower can’t work

Malfunction

Cause

Solution

Malfunction of fuse

Check the fuse of blower for break and replace blower fuse if it’s broken;

Malfunction of blower
relay

Check #1 and #2 terminal of relay for conducting; if so, check #3 and #4 terminal of
relay for conducting while applying positive voltage to #1 and #2 terminal; if not,
the relay should be replaced;

Malfunction of blower
adjusting resistance

Check every coil of blower adjusting resistance for conducting; if not, the blower
adjusting resistance should be replaced;

Malfunction of blower
coil

Check blower coil for short-circuit or conducting; if it’s not conducted, the blower
motor should be replaced;

Malfunction of blower
switch

Check every connector of blower switch for conducting; if there is abnormal
connector, the blower switch should be replaced;

Malfunction of
harness

Check the harness of blower for short-circuit or break; if it's abnormal, the harness
of blower should be checked and repaired;

Blower can’t
work

Malfunction of blower
fan

Check blower fan for blocking or other object resulting in blocking, thus the blower
should be dismantled and checked;

Blower can’t work

Low voltage of battery

Broken fuse of blower

Malfunction of blower relay

Open circuit of blower speed governing
resistance

Short-circuit or open circuit of blower coil

Replace blower motor

Normal working of blower switch

Blocking or blocked blower fan

Replace blower fan

Replace blower
switch

Replace blower speed
governing resistance;

Replace blower relay

Charg or replace battery

Replace blower fuse

Open circuit or poor contact of connector loop for blower

Check and repair blower
loop

Abnormal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Abnormal

Abnormal

Abnormal

Open circuit

Abnormal

Break

Over-low

335

No. 240 Abnormal sound of blower

Malfunction Cause

Solution

Check working condition of brush for worn-out and if the friction between
brush and rotator of blower results in abnormal sound; if it's abnormal, the
blower motor or blower assembly should be replaced;

Internal malfunction of blower

Check bearing bush of blower for over-worn; if it's abnormal, the blower
motor or blower assembly should be replaced;

Check blower internally for other object; if so, the blower should be
dismantled to take other object out;

Abnormal sound of
blower

Other malfunctions

Check fixing bolt of blower blades and fastening bolt of blower for loosing;
tighten them if it’s abnormal;

Dismantle
blower

Impurity enters into blower

Loosing of internal blower blades

Dismantle
blower

Internal brush and bearing for blower in poor
operation

Replace
blower

Abnormal sound of blower

Abnormal

Normal

Abnormal

Abnormal

Normal

336

No. 241 Continuous running of cooling fan

Malfunction Cause

Solution

Malfunction of fan

relay

Check #1 and #2 terminal of relay for conducting; if so, check #3 and #4 terminal of relay
for conducting while applying positive voltage to #1 and #2 terminal; the #3 and #4
terminal should be conducted; if the two contacts are still normal-close resulting in
continuous running of fan, the relay should be replaced;

1. Check if the opening temperature of thermostat is 80 – 84 degree; if not, recirculation
and heat dispersion of cooling water will be bad and the high water temperature will
result in continuous running of fan; then the thermostat should be replaced;

Malfunction of
thermostat

2. Check thermostat valve for lift; when water temperature is about 93 degree, the lift
should bigger than 8 mm; if not, insufficient recirculation and heat dispersion of cooling
water will result in high water temperature and subsequent continuous running of fan;
then the thermostat should be replaced;

Temperature sensor
for coolant

Check if the resistance of coolant temperature sensor varies according to water
temperature; check if the resistance of sensor is 2.5 kOhm +/- 5% under 20 degree; if it's
abnormal, the temperature sensor for coolant should be replaced;

Other malfunctions

Check if there is leakage of coolant for radiator and cooling system; if so, it will result in
insufficient cooling water and high water temperature and subsequent continuous
running of fan, thus the leaking parts should be replaced or treated for sealing;

Malfunction of
harness

Check harness of fan motor for short-circuit or mixed connection; if it’s abnormal, the fan
loop should be checked and repaired;

Continuous
running of cooling
fan

Malfunction of
engine ECU

Check internal program of engine ECU for short-circuit or mixed connection; if it’s
abnormal, thus the engine ECU should be replaced;

Continuous
running of cooling

Leaking or insufficient coolant

Check cooling
system

No recirculation and heat dispersing
for coolant of radiator

Check, repair or
replace thermostat

Fan relay in poor operation

Replace fan
relay

Water temperature sensor in poor
operation

Short-circuit or break of fan loop

Replace water
temperature

Check and
repair fan loop

Engine ECU in poor operation

Replace engine

Abnormal

Normal

Abnormal

Abnormal

Abnormal

Abnormal

Leakage

Normal

Normal

Normal

Normal