Isuzu KB P190. Manual — part 1095
7A2-96 TRANSMISSION CONTROL SYSTEM (JR405E)
Faulty Gearshift
Engine race up (slipping) when gearshift is up from 1st to 2nd
C1
Engine race up (slipping) when gearshift is up from 2nd to 3rd
C2
Engine race up (slipping) when gearshift is up from 3rd to 4th
C3
Engine race up (slipping) when gearshift is down from 4th to 3rd
C4
Engine race up (slipping) when gearshift is down (or kick-down) from
4th to 2nd
C5
Engine race up (slipping) when gearshift is down (or kick-down) from
3rd to 2nd
C6
Engine race up (slipping) when gearshift is down (or kick-down) from
4th or 3rd to 2nd
C7
Engine race up (slipping) others
C8
Braking feel when gearshift is up from 1st to 2nd
C9
Braking feel when gearshift is up from 2nd to 3rd
C10
Braking feel when gearshift is up from 3rd to 4th
C11
Large shock when gearshift from 1st to 2nd or 2nd to 1st
C12
Large shock when gearshift from 2nd to 3rd or 3rd to 2nd
C13
Large shock when gearshift from 3rd to 4th or 4th to 3rd
C14
Large shock when kick-down
C15
Large shock when accelerator pedal is stepped ON or OFF without
gearshift
C16
Large shock when gearshift from 2nd to 1st in L range
C17
Large shock others
C18
Large shock when vehicle speed is reduced by no accelerator pedal or
vehicle is stopped
C19
Large shock at lock up
C20
Shift down or engine overrun when accelerator pedal is stepped ON in
4th gear
C21
Faulty Shift Pattern
Faulty gearshift schedule (different from shift speed chart)
D1
Gearshift frequently
D2
Gearshift point is low or high at all points
D3
Gearshift point is low or high at limited area
D4
No kick-down
D5
No or Error Gearshift
No gearshift
E1
Only 4th gear is not selectable
E2
Gear is changed from 2nd to 3rd in 2 range
E3
Gear is changed from 1st to 2nd in L range
E4
Gear is changed from 3rd to 4th in 3 range
E5
Faulty Operation During Running
Low maximum speed or poor acceleration
F1
Only 4th gear is not selectable
F2
Noise or vibration occurs during in R, D, 3, 2 or L range
F3
Engine brake does not apply in L range
F4
Engine stalls before vehicle stops from running
F5
Diagnostic Category
Category No.
TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-97
Faulty Operation in Stopping
Vehicle moves in P range or parking is not disengaged in other than P
range
G1
Large creeping force
G2
Small creeping force
G3
Large noise during idle with vehicle stop
G4
Faulty Lock Up
Judder Occurs at Lock Up
H1
Large Shock at Lock Up
H2
Lock Up Point is High or Low
H3
No Lock Up
No Lock Up
I1
Transmission Fluid Leak
Transmission fluid leaks from breather
J1
Transmission fluid leaks between engine and converter housing
J2
Transmission fluid leaks between converter housing and transmission
case
J3
Transmission fluid leaks between transmission case and extension
housing
J4
Transmission fluid leaks from oil pan
J5
Transmission fluid leaks from manual shaft oil seal
J6
Transmission fluid leaks from oil cooler pipe joint
J7
Others
Transmission overheat
Z1
Mode lamp (power drive or 3rd start) does not turn On
Z2
Mode lamp (power drive or 3rd start) does not turn Off
Z3
A/T oil temperature lamp turns On
Z4
Selector lever feeling is faulty
Z5
Poor fuel consumption
Z6
Shift indicator is faulty
Z7
Abnormal smell
Z8
Transmission fluid quantity is low or high
Z9
Transmission fluid quantity is low or high
Z10
Abnormal transmission fluid pressure
Z11
Diagnostic Category
Category No.
7A2-98 TRANSMISSION CONTROL SYSTEM (JR405E)
A1
Vehicle does not run in D
, 3, 2, L & L range
A2
Vehicle does not run in R
range
A3
Vehicle does not run in D
, 3, 2 and L range
B1
Vehicle runs in N
range
B2
Poor acceleration at starting
B3
Engine races up during starting (slip)
B4
Large shock w
hen selector lev
er is changed
from N
to D
range or N
to R
range
B5
Engine stalls w
hen selector lev
er is changed
from N
to R
, D
, 3, 2 or L range
B6
Engine does not crank in P or N
range
B7
Engine cranks in other than P or N
range
B8
Ex
tended time lag w
hen selector lev
e
r is
changed from N
to D
B9
Ex
tended time lag w
hen selector lev
e
r is
changed from N
to R
B10
Brake is applied in R
range
B11
Insufficient starting or shaking in D
range
B12
N
oise or v
ibration occurs at starting
Error, open or short circuit
Error, open or short circuit
Error, open or short circuit
Error, open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Error, open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Out of standard value
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Slip
Seizure
Faulty operation
Separation
Faulty operation
Engine speed signal
Accelerator pedal position signal
Input shaft speed sensor
Output shaft speed sensor
Powe
r drive or 3rd start switch
Transmission range switch
TCM pow
er or ground
Transmission fluid temperature sensor
Pressure control solenoid
Torque converter clutch solenoid
Low & reverse brake solenoid
2-4 brake solenoid
High clutch solenoid
Low clutch solenoid
Ground return circuit
Low & reverse brake fluid pressure sw
itch
2-4 brake fluid pressure switch
High clutch fluid pressure sw
itch
Transmission fluid quantity
Control spool valve
High clutch solenoid accumulator
Low clutch solenoid accumulator
Low & reverse brake solenoid accumulator
2-4 brake solenoid accumulator
High clutch accumulator
2-4 brake accumulator
Pressure control solenoid hydraulic circuit
Torque converter clutch hydraulic circuit
High clutch solenoid hydraulic circuit
Low clutch solenoid hydraulic circuit
Low & reverse brake solenoid hydraulic circuit
2-4 brake solenoid hydraulic circuit
Oil cooler
Torque converter
D
iagnostic category
Pos
s
ible c
aus
es
Electrical
Disordered selector lever cable
Disordered transmission range sw
itch
Faulty line pressure
Faulty engine idle speed
Clutch
(brake
)
Torque converter clutch piston
H
y
draulic control
Pow
e
rtrain
TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-99
C1
Engine race up (slipping) w
hen gearshift is
up from 1st to 2nd
C2
Engine race up (slipping) w
hen gearshift is
up from 2nd to 3rd
C3
Engine race up (slipping) w
hen gearshift is
up from 3rd to 4th
C4
Engine race up (slipping) w
hen gearshift is
dow
n from 4th to 3rd
C5
Engine race up (slipping) w
hen gearshift is
dow
n (or kick-dow
n) from 4th to 2nd
C6
Engine race up (slipping) w
hen gearshift is
dow
n (or kick-dow
n) from 3rd to 2nd
C7
Engine race up (slipping) w
hen gearshift is
dow
n (or kick-dow
n) from 4th or 3rd to 2nd
C8
Engine race up (slipping) others
C9
Braking feel w
hen gearshift is up from 1st to
2nd
C1
0
Braking feel w
hen gearshift is up from 2nd to
3rd
C1
1
Braking feel w
hen gearshift is up from 3rd to
4th
C1
2
Large shock w
hen gearshift from 1st to 2nd
or 2nd to 1st
C1
3
Large shock w
hen gearshift from 2nd to 3rd
or 3rd to 2nd
C1
4
Large shock w
hen gearshift from 3rd to 4th
or 4th to 3rd
C1
5
Large shock w
hen kick-dow
n
C1
6
Large shock w
hen accelerator pedal is
stepped O
N
or O
FF w
ithout gearshift
C1
7
Large shock w
hen gearshift from 2nd to 1st
in L range
C1
8
Large shock others
C1
9
Large shock w
hen v
ehicle speed is reduced
by
no accelerator pedal or v
ehicle is stopped
C2
0
Large shock at lock up
C2
1
Shift dow
n or engine ov
errun w
hen
accelerator pedal is stepped O
N
in 4th gear
Error, open or short circuit
Error, open or short circuit
Error, open or short circuit
Error, open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Error, open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Out of standard value
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Faulty operation
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Clogged passage
Slip
Seizure
Faulty operation
Separation
Faulty operation
Engine speed signal
Accelerator pedal position signal
Input shaft speed sensor
Output shaft speed sensor
Powe
r drive or 3rd start switch
Transmission range switch
TCM pow
er or ground
Transmission fluid temperature sensor
Pressure control solenoid
Torque converter clutch solenoid
Low & reverse brake solenoid
2-4 brake solenoid
High clutch solenoid
Low clutch solenoid
Ground return circuit
Low & reverse brake fluid pressure sw
itch
2-4 brake fluid pressure switch
High clutch fluid pressure sw
itch
Transmission fluid quantity
Control spool valve
High clutch solenoid accumulator
Low clutch solenoid accumulator
Low & reverse brake solenoid accumulator
2-4 brake solenoid accumulator
High clutch accumulator
2-4 brake accumulator
Pressure control solenoid hydraulic circuit
Torque converter clutch hydraulic circuit
High clutch solenoid hydraulic circuit
Low clutch solenoid hydraulic circuit
Low & reverse brake solenoid hydraulic circuit
2-4 brake solenoid hydraulic circuit
Oil cooler
Torque converter
Clutch
(brake
)
Torque converter clutch piston
H
y
draulic control
Pow
e
rtrain
D
iagnostic category
Pos
s
ible c
aus
es
Electrical
Disordered selector lever cable
Disordered transmission range sw
itch
Faulty line pressure
Faulty engine idle speed
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