Infiniti G20 (P11). Manual - part 24
Item
Symptom
Condition
Diagnostic Item
Reference Page
No Down
Shift
Failure to change gear from “D
2
” to “D
1
” or
from “D
3
” to “D
1
”.
ON vehicle
1. Fluid level
2. Throttle position sensor
(Adjustment)
EC-177, “DTC
P0120
THROTTLE
POSITION SEN-
SOR”
3. Shift solenoid valve A
4. Shift solenoid valve B
5. Control valve assembly
OFF vehicle
6. Low one-way clutch
7. High clutch
8. Brake band
Shift Shock
Gear change shock felt during deceleration
by releasing accelerator pedal.
ON vehicle
1. Throttle position sensor
(Adjustment)
EC-177, “DTC
P0120
THROTTLE
POSITION SEN-
SOR”
2. Line pressure test
3. Overrun clutch solenoid valve
4. Control valve assembly
Improper
Shift Timing
Too high a change point from “D
4
” to “D
3
”,
from “D
3
” to “D
2
”, from “D
2
” to “D
1
”.
ON vehicle
1. Throttle position sensor
(Adjustment)
EC-177, “DTC
P0120
THROTTLE
POSITION SEN-
SOR”
2. Vehicle speed sensor·A/T
(Revolution sensor) and vehicle
speed sensor·MTR
Kickdown does not operate when depress-
ing pedal in “D
4
” within kickdown vehicle
speed.
ON vehicle
1. Throttle position sensor
(Adjustment)
EC-177, “DTC
P0120
THROTTLE
POSITION SEN-
SOR”
2. Revolution sensor and vehicle
speed sensor
3. Shift solenoid valve A
4. Shift solenoid valve B
Kickdown operates or engine overruns when
depressing pedal in “D
4
” beyond kickdown
vehicle speed limit.
ON vehicle
1. Vehicle speed sensor·A/T
(Revolution sensor) and vehicle
speed sensor·MTR
2. Throttle position sensor
(Adjustment)
EC-177, “DTC
P0120
THROTTLE
POSITION SEN-
SOR”
3. Shift solenoid valve A
4. Shift solenoid valve B
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-93