Infiniti I35 (A33). Manual - part 23
Items
Symptom
Condition
Diagnostic Item
Reference Page
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. Accelerator pedal position sensor
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
Kickdown does
not operate when
depressing pedal
in D
4
within kick-
down vehicle
speed.
ON vehicle
1. Accelerator pedal position sensor
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
3. Shift solenoid valve A
4. Shift solenoid valve B
Kickdown oper-
ates or engine
overruns when
depressing pedal
in D
4
beyond kick-
down vehicle
speed limit.
ON vehicle
1. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
2. Accelerator pedal position sensor
3. Shift solenoid valve A
4. Shift solenoid valve B
Gear change from
2
2
to 2
3
in 2nd
position.
ON vehicle
1. Park/neutral position (PNP) switch
2. Control cable adjustment
Gear change from
1
1
to 1
2
in 1st
position.
ON vehicle
1. Park/neutral position (PNP) switch
adjustment
2. Control cable adjustment
No Down Shift
Failure to change
gear from D
4
to
D
3
.
ON vehicle
1. Fluid level
2. Accelerator pedal position sensor
3. Overrun clutch solenoid valve
4. Shift solenoid valve A
5. Line pressure solenoid valve
6. Control valve assembly
OFF vehicle
7. Brake band
8. Overrun clutch
Failure to change
gear from D
3
to
D
2
or from D
4
to
D
2
.
ON vehicle
1. Fluid level
2. Accelerator pedal position sensor
3. Shift solenoid valve A
4. Shift solenoid valve B
5. Control valve assembly
OFF vehicle
6. High clutch
7. Brake band
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-89