Index Infiniti Infiniti I30 (A33) - service repair manual 2001 year

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Infiniti I30 (A33). Manual - part 24

Items

Symptom

Condition

Diagnostic Item

Reference Page

NOT USED

Maximum speed
not attained.
Acceleration poor.

ON vehicle

1. Fluid level

2. Park/neutral position (PNP) switch
adjustment

3. Shift solenoid valve A

4. Shift solenoid valve B

5. Control valve assembly

OFF vehicle

6. Reverse clutch

7. High clutch

8. Brake band

9. Low & reverse brake

10. Oil pump

11. Torque converter

Transaxle noise in
D, 2, 1 and R
positions.

ON vehicle

1. Fluid level

ON vehicle

2. Torque converter

Engine brake
does not operate
in “1” position.
AT-256

ON vehicle

1. Park/neutral position (PNP) switch
adjustment

2. Control cable adjustment

3. Throttle position sensor (Adjustment)

4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR

5. Shift solenoid valve A

6. Control valve assembly

7. Overrun clutch solenoid valve

OFF vehicle

8. Overrun clutch

9. Low & reverse brake

Transaxle over-
heats.

ON vehicle

1. Fluid level

2. Engine idling rpm

3. Throttle position sensor (Adjustment)

4. Line pressure test

5. Line pressure solenoid valve

6. Control valve assembly

OFF vehicle

7. Oil pump

8. Reverse clutch

9. High clutch

10. Brake band

11. Forward clutch

12. Overrun clutch

13. Low & reverse brake

14. Torque converter

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-93

Items

Symptom

Condition

Diagnostic Item

Reference Page

NOT USED

ATF shoots out
during operation.
White smoke
emitted from
exhaust pipe dur-
ing operation.

ON vehicle

1. Fluid level

OFF vehicle

2. Reverse clutch

3. High clutch

4. Brake band

5. Forward clutch

6. Overrun clutch

7. Low & reverse brake

Offensive smell at
fluid charging
pipe.

ON vehicle

1. Fluid level

OFF vehicle

2. Torque converter

3. Oil pump

4. Reverse clutch

5. High clutch

6. Brake band

7. Forward clutch

8. Overrun clutch

9. Low & reverse brake

Engine is stopped
at R, D, 2 and 1
positions.

ON vehicle

1. Fluid level

2. Torque converter clutch solenoid valve

3. Shift solenoid valve B

4. Shift solenoid valve A

5. Control valve assembly

AAT475A

TCM Terminals and Reference Value

NHAT0031

PREPARATION

NHAT0031S01

I

Measure voltage between each terminal and terminal 25 or 48
by following “TCM INSPECTION TABLE”.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

Symptom Chart (Cont’d)

AT-94

TCM HARNESS CONNECTOR TERMINAL LAYOUT

NHAT0031S02

SAT338JA

TCM INSPECTION TABLE

NHAT0031S03

(Data are reference values.)

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

1

G/R

Line pressure
solenoid valve

When releasing accelerator pedal after warm-
ing up engine.

1.5 - 3.0V

When depressing accelerator pedal fully after
warming up engine.

0V

2

W/B

Line pressure sole-
noid valve
(with dropping
resistor)

When releasing accelerator pedal after warm-
ing up engine.

4 - 14V

When depressing accelerator pedal fully after
warming up engine.

0V

3

G/B

Torque converter
clutch solenoid
valve

When A/T performs lock-up.

8 - 15V

When A/T does not perform lock-up.

0V

10

R/Y

Power source

or

When turning ignition switch to ON.

Battery volt-
age

When turning ignition switch to OFF.

0V

11

R/Y

Shift solenoid valve
A

When shift solenoid valve A operates.
(When driving in D

1

or D

4

.)

Battery volt-
age

When shift solenoid valve A does not operate.
(When driving in D

2

or D

3

.)

0V

12

LG/B

Shift solenoid valve
B

When shift solenoid valve B operates.
(When driving in D

1

or D

2

.)

Battery volt-
age

When shift solenoid valve B does not operate.
(When driving in D

3

or D

4

.)

0V

13

G/Y

O/D OFF indicator
lamp

When setting overdrive control switch in OFF
position.

0V

When setting overdrive control switch in ON
position.

Battery volt-
age

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value (Cont’d)

AT-95

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

16

GY/L

Closed throttle
position switch
(in throttle position
switch)

When releasing accelerator pedal after warm-

ing up engine.

Battery volt-
age

When depressing accelerator pedal after
warming up engine.

0V

17

P

Wide open throttle
position switch
(in throttle position
switch)

When depressing accelerator pedal more than
half-way after warming up engine.

Battery volt-
age

When releasing accelerator pedal after warm-
ing up engine.

0V

18

Y

ASCD cruise switch

When ASCD cruise is being performed.
(“CRUISE” lamp comes on.)

Battery volt-
age

When ASCD cruise is not being performed.
(“CRUISE” lamp does not comes on.)

0V

19

R/Y

Power source

Same as No. 10

20

BR/Y

Overrun clutch
solenoid valve

When overrun clutch solenoid valve operates.

Battery volt-
age

When overrun clutch solenoid valve does not
operate.

0V

22

G/Y

Overdrive control
switch

When setting overdrive control switch in ON
position

Battery volt-
age

When setting overdrive control switch in OFF
position

0V

24

L

ASCD OD cut sig-
nal

When “ACCEL” set switch on ASCD cruise is
in D

4

position.

5 - 10V

When “ACCEL” set switch on ASCD cruise is
in D

3

position.

Less than
2V

25

B

Ground

—

—

—

26

PU/W

PNP switch 1 posi-
tion

When setting selector lever to 1 position.

Battery volt-
age

When setting selector lever to other positions.

0V

27

P/B

PNP switch 2 posi-
tion

When setting selector lever to 2 position.

Battery volt-
age

When setting selector lever to other positions.

0V

28

Y/R

Power source
(Memory back-up)

or

When turning ignition switch to OFF.

Battery volt-
age

When turning ignition switch to ON.

Battery volt-
age

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value (Cont’d)

AT-96

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