Mitsubishi 3000GT Service Manual page 615

AUTOMATIC TRANSAXLE
INSPECTION OF CONTROL SYSTEM
Check the control system by using the scan tool and following the procedure given below.
CONTROL SYSTEM INSPECTION TABLE
Check Item
Accelerator pedal fully
Throttle position
sensor (TPS) released
Data list
l
Accelerator pedal slowly
Item No. 11
l
depressed
Accelerator pedal fully
depressed
Oil temperature Cold engine (before start)
sensor
l Data list
Engine warming up
l Item No. 15
After engine warming up
L range, idle
switch
D range, 1st or 3rd speed
Data list
l
Item No. 21
l
D range, 2nd or 4th speed
Ignition signal N range, idle
line
N range, 2,500 rpm
(tachometer reading)
Item No. 23
Accelerator pedal Accelerator pedal fully
switch released
Accelerator pedal slightly
depressed
Closed throttle Accelerator pedal fully
released
position switch
Data list
Accelerator pedal slightly
Item No. 25
,
depressed
Air conditioning D range, air conditioning
compressor clutch idle-up
relay signal
D range, air conditioning
I
idle OFF
Item No. 26
I
Transaxle gear D range, idle
position
I
I
D range, O/D OFF, 3rd speed
I
Condition Criteria
Varies with throttle
opening degree
Equivalent to out-
side temperature
Gradually
increases
ON
ON
OFF
650-900 rpm
ON
OFF
ON
OFF
ON
OFF
C
I
2ND
3RD
TSB Revision
Possible Cause of Trouble (or Remedy)
TPS is improperly adjusted if voltage
l
is high when accelerator pedal is fully
depressed or released.
TPS or circuit harness is defective
l
if there is no change.
TPS or accelerator pedal cable is
l
defective if change is not smooth.
Defective oil temperature sensor or
l
circuit harness
l Improperly adjusted kickdown servo
Defective kickdown servo switch or
circuit harness
Defective kickdown servo
Defective ignition system
l Defective ignition signal pickup circuit
harness
l
Improperly adjusted accelerator ped-
al switch
Defective accelerator pedal switch
or circuit harness
Improperly adjusted TPS
Defective TPS or circuit harness
Defective air-conditioning compres-
sor clutch relay ON signal detection
circuit harness
Defective accelerator pedal switch
l
circuit
Defective park/neutral position switch
circuit
l Defective TPS circuit