Geely Diagnosis Flow. Manual part — 47

185

Shifting valve

Replace

Repair

Control valve plate

Throttle tie-line

Auto transmission upshifts too late

Throttle valve

Oil pressure insufficient

Friction disk skids

Governor valve

Accumulator

Repair or replace

Repair or replace

Adjust

Repair

Replace

Replace

Abnormal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Abnormal

Abnormal

Abnormal

Abnormal

Abnormal

Abnormal

Abnormal

186

No. 137 Auto transmission unable to upshift

Malfunction Causes

Solution

Auto transmission oil

Check auto transmission oil is too little, and oil level shall
be between 2-4 holes of dipstick; if too little, it will not
generate oil pressure, making it unable to upshift;

Throttle tie-line malfunction

Check throttle tie-line, and step to the end, and throttle
shall at maximum position. If not possible, adjust throttle
tie-line; Check tie-line of throttle position of auto
transmission; there shall be 2-8mm clearance between
tie-line bottom and pedestal, and adjust it if not so;

Governor valve malfunction

Check speed control valve blocks or leaks or fails; if
abnormal, repair or replace governor valve;

Auto shifting valve malfunction

Check auto shifting valve blocks or leaks; if abnormal,
adjust or replace valve plate assembly;

Accumulator malfunction

Check accumulator blocks, or is worn, leaking; check
accumulator spring conforms to requirement; if abnormal,
adjust or replace seal or spring;

Auto transmission

unable to upshift

Drive-gear control valve malfunction

Check drive-gear clutch piston blocks or leaks; if
abnormal, adjust or replace drive-gear clutch parts;

Auto transmission unable to upshift

Auto transmission oil liquid

Throttle tie-line

Governor valve

Auto shifting valve

Accumulator

Drive-gear control valve

Repaiar or replace

Replace

Repair

Repair

Adjust

Check and fill

Abnormal

Normal

Abnormal

Abnormal

Abnormal

Abnormal

Abnormal

Normal

Normal

Normal

Normal

187

No. 138 Auto transmission unable to force downshift

Malfunction Causes

Solution

Throttle tie-line malfunction

Check throttle tie-line, and step to the end, and throttle
shall at maximum position. If not possible, adjust throttle
tie-line; Check tie-line of throttle position of auto
transmission; there shall be 2-8mm clearance between
tie-line bottom and pedestal, and adjust it if not so;

Control valve malfunction

Check control valve plate blocks or leaks inside; if
abnormal, repair or replace;

Governing valve malfunction

Governing valve severely worn, causing pressure relief,
thus unable to downshift; replace governing valve
assembly;

Forced downshift switch malfunction

Check forced downshift switch is ok; if abnormal, replace
it, and if normal, check tie-line from downshift switch to
control unit is normal, and if so, check control unit is ok,
and if not so, replace it;

Auto transmission
unable to force
downshift

Forced-gear solenoid valve damaged

Check solenoid valve switch is damaged; by referencing
circuit drawing, check there is open circuit, short circuit;
replace solenoid valve;

Auto transmission unable to force

downshift

Throttle tie-line

Control valve

Forced downshift switch

Forced-gear solenoid valve

damaged

Repaiar or replace

Adjust

Replace

Replace

Abnormal

Normal

Normal

Normal

Abnormal

Abnormal

Abnormal

188

No. 139 Engine shuts down after putting into gear

Malfunction Causes

Solution

Idling speed too low or clutch too low;
throttle blocks

Clean idling motor or replace, and adjust clutch height, or
replace throttle tie-line;

Idling motor poorly operates

Clean or replace idling motor;

Check signal panel loosens; repair or replace parts and
components;

Rotating signal panel loosens or engine
unusually operates

Repair the engine, making it normal or replace damaged
parts and components;

Gear inside transmission worn, damaged or
jammed, blocked

Disassemble gear inside transmission; adjust or replace
damaged parts and components;

Clutch disk and flywheel locked or not fully
separated

Repair or replace parts and components; repair and separate
fully or replace damaged parts and components;

Engine shuts down
after putting into
gear

Torque converter (with locking clutch)
malfunction

With power on, test locking clutch solenoid valve is normal;
check resistance of control solenoid valve is up to standard; if
not so, replace solenoid valve; if so, check tie line of solenoid
valve and control unit is normal; if so, check control unit is ok;
if not so, replace it; if solenoid valve and control unit tie-line,
control unit are all normal, clean or replace torque converter;

Engine shuts down after putting into gear

Idling speed too low or clutch too low; throttle

blocks

Idling motor poorly operates

Rotating signal panel loosens or engine

unusually operates

Gear inside transmission worn, damaged or

jammed, blocked

Torque converter

Clean or replace

Replace

Repair

Repair

Repair

Abnormal

Normal

Normal

Normal

Normal

Abnormal

Abnormal

Abnormal

Abnormal