Content .. 19 20 21 22 ..

Nissan Silvia. Manual - part 21

Items

Symptom

Condition

Diagnostic Item

Reference Page

NOT USED

Transmission
overheats.

ON vehicle

1. Fluid level

AT-9

2. Engine idling rpm

EC-50, “Basic Inspec-
tion”.

3. Throttle position sensor (Adjustment)

EC-50, “Basic Inspec-
tion”.

4. Line pressure test

AT-51

5. Line pressure solenoid valve

AT-136

6. Control valve assembly

AT-205

OFF vehicle

7. Oil pump

8. Reverse clutch

9. High clutch

10. Brake band

11. Forward clutch

12. Overrun clutch

13. Low & reverse brake

AT-253

14. Torque converter

AT-215

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

ON vehicle

1. Fluid level

AT-9

OFF vehicle

2. Reverse clutch

3. High clutch

4. Brake band

5. Forward clutch

6. Overrun clutch

7. Low & reverse brake

AT-253

Offensive smell at
fluid charging
pipe.

ON vehicle

1. Fluid level

AT-9

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

AT-253

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

ON vehicle

1. Fluid level

AT-9

2. Torque converter clutch solenoid valve

AT-120

3. Shift solenoid valve B

AT-111

4. Shift solenoid valve A

AT-106

5. Control valve assembly

AT-205

IDX

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

Symptom Chart (Cont’d)

AT-81

AAT475A

TCM Terminals and Reference Value

=NMAT0027

PREPARATION

NMAT0027S01

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

SAT217JD

TCM HARNESS CONNECTOR TERMINAL LAYOUT

NMAT0027S02

TCM INSPECTION TABLE

NMAT0027S03

(Data are reference values.)

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

OR/B

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.

Line pressure
solenoid valve
(with dropping
resistor)

When releasing accelerator pedal after warm-
ing up engine.

5 - 14V

When depressing accelerator pedal fully after
warming up engine.

BR/R

Torque converter
clutch solenoid
valve

When A/T performs lock-up.

8 - 15V

When A/T does not perform lock- up.

—

5*1

L/OR

DT1

—

6*1

L/W

DT2

—

7*1

PU/W

DT3

—

G/OR

Power source

When turning ignition switch to “ON”.

Battery volt-
age

When turning ignition switch to “OFF”.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value

AT-82

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

R/W

Shift solenoid
valve A

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

” or “D

”.)

Battery volt-
age

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

” or “D

”.)

OR/L

Shift solenoid
valve B

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

” or “D

”.)

Battery volt-
age

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

” or “D

”.)

POWER indicator
lamp

When setting A/T mode switch in “POWER”
position.

Battery volt-
age

When setting A/T mode switch in other posi-
tion.

R/G

—

Closed throttle
position switch
(in throttle posi-
tion switch)

When releasing accelerator pedal after warm-
ing up engine.

Battery volt-
age

When depressing accelerator pedal after
warming up engine.

Wide open
throttle position
switch
(in throttle posi-
tion 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.

—

G/OR

Power source

Same as No. 10

P/L

Overrun clutch
solenoid valve

When overrun clutch solenoid valve operates.

Battery volt-
age

When overrun clutch solenoid valve does not
operate.

—

L/B

Overdrive control
switch

When setting overdrive control switch in “ON”
position

Battery volt-
age

When setting overdrive control switch in
“OFF” position

—

IDX

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value (Cont’d)

AT-83

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

—

Ground

—

PNP switch “1”
position

When setting selector lever to “1” position.

Battery volt-
age

When setting selector lever to other positions.

PNP switch “2”
position

When setting selector lever to “2” position.

Battery volt-
age

When setting selector lever to other positions.

R/W

Power source
(Memory back-up)

When turning ignition switch to “OFF”.

Battery volt-
age

When turning ignition switch to “ON”.

Battery volt-
age

Revolution sensor
(Measure in AC
range)

When vehicle cruises at 30 km/h (19 MPH).

1V or more
Voltage rises
gradually in
response to
vehicle speed.

When vehicle parks.

30*2

G/B

—

31*2

—

LG/R

Throttle position
sensor
(Power source)

Ignition switch “ON”.

4.5 - 5.5V

Ignition switch “OFF”.

—

LG/B

PNP switch “D”
position

When setting selector lever to “D” position.

Battery volt-
age

When setting selector lever to other positions.

PNP switch “R”
position

When setting selector lever to “R” position.

Battery volt-
age

When setting selector lever to other positions.

PNP switch “N” or
“P” position

When setting selector lever to “N” or “P” posi-
tion.

Battery volt-
age

When setting selector lever to other positions.

—

L/OR

Engine speed
signal

Refer to EC-76, “ECM Inspection Table”.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value (Cont’d)

AT-84

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