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Infiniti I35 (A33). Manual - part 25

Items

Symptom

Condition

Diagnostic Item

Reference Page

NOT USED

Transaxle over-
heats.

ON vehicle

1. Fluid level

AT-64

2. Engine idling rpm

AT-68

3. Accelerator pedal position sensor

AT-188

4. Line pressure test

AT-68

5. Line pressure solenoid valve

AT-172

6. Control valve assembly

AT-282

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-341

14. Torque converter

AT-293

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

ON vehicle

1. Fluid level

AT-64

OFF vehicle

2. Reverse clutch

3. High clutch

4. Brake band

5. Forward clutch

6. Overrun clutch

7. Low & reverse brake

AT-341

Offensive smell at
fluid charging
pipe.

ON vehicle

1. Fluid level

AT-64

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-341

IDX

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

Symptom Chart (Cont’d)

AT-97

AAT475A

TCM Terminals and Reference Value

=NHAT0031

PREPARATION

NHAT0031S01

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

TCM HARNESS CONNECTOR TERMINAL LAYOUT

NHAT0031S02

SAT819K

TCM INSPECTION TABLE

NHAT0031S03

(Data are reference values.)

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

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.

W/B

Line pressure
solenoid valve
(with dropping
resistor)

When releasing accelerator pedal after warm-
ing up engine.

4 - 14V

When depressing accelerator pedal fully after
warming up engine.

G/B

Torque converter
clutch solenoid
valve

When A/T performs lock-up.

8 - 15V

When A/T does not perform lock-up.

CAN-H (high)

—

CAN-L (low)

—

R/Y

Power source

When turning ignition switch to ON.

Battery voltage

When turning ignition switch to OFF.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value

AT-98

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

R/Y

Shift solenoid
valve A

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

or D

Battery voltage

When shift solenoid valve A does not oper-
ate.
(When driving in D

or D

LG/B

Shift solenoid
valve B

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

or D

Battery voltage

When shift solenoid valve B does not oper-
ate.
(When driving in D

or D

G/R

A/T CHECK indi-
cator lamp

When AT CHECK indicator lamp is ON.

When AT CHECK indicator lamp is OFF.

Battery voltage

R/Y

Power source

Same as No. 10

BR/Y

Overrun clutch
solenoid valve

When overrun clutch solenoid valve operates. Battery voltage

When overrun clutch solenoid valve does not
operate.

G/Y

3rd position switch

When the selector lever is in a position other
than 3rd position.

Battery voltage

When the selector lever is in 3rd position.

Ground

—

PU/R

PNP switch 1st
position

When setting selector lever to 1st position.

Battery voltage

When setting selector lever to other positions. 0V

P/B

PNP switch 2nd
position

When setting selector lever to 2nd position.

Battery voltage

When setting selector lever to other positions. 0V

Y/R

Power source
(Memory back-up)

When turning ignition switch to OFF.

Battery voltage

When turning ignition switch to ON.

Battery voltage

Revolution sensor
(VHCL/S SEN)

When moving at 20 km/h (12 MPH), use the
CONSULT-II pulse frequency measuring func-
tion.*1

CAUTION:

Connect the diagnosis data link cable to
the vehicle diagnosis connector.
*1: A circuit tester cannot be used to test this
item.

450 Hz

When vehicle parks.

IDX

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value (Cont’d)

AT-99

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

30*

BR/Y

Data link connec-
tor (RX)

—

31*

Data link connec-
tor (TX)

—

Sensor power

Ignition switch ON.

4.5 - 5.5V

Ignition switch OFF.

Y/PU

PNP switch D
position

When setting selector lever to D position.

Battery voltage

When setting selector lever to other positions. 0V

G/W

PNP switch R
position

When setting selector lever to R position.

Battery voltage

When setting selector lever to other positions. 0V

R/G

PNP switch P or
N position

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

Battery voltage

When setting selector lever to other positions. 0V

Power train revo-
lution sensor

When moving at 20 km/h (12 MPH), use the
CONSULT-II pulse frequency measuring func-
tion.*1

CAUTION:

Connect the diagnosis data link cable to
the vehicle diagnosis connector.
*1: A circuit tester cannot be used to test this
item.

240 Hz

When vehicle parks.

Under 1.3V or
over 4.5V

W/G

Engine speed sig-
nal (TACHO)

Refer to EC-137, “ECM INSPECTION TABLE”.

PU/R

Vehicle speed
sensor (MTR)

When moving vehicle at 2 to 3 km/h (1 to 2
MPH) for 1 m (3 ft) or more.

Intermittently
changes
between approx.
0V and approx.
4.5V

Accelerator pedal
position sensor

When depressing accelerator pedal slowly
after warming up engine.
(Voltage rises gradually in response to
throttle position.)

Fully-closed
throttle: 0.5V
Fully-open
throttle: 4V

Sensor ground

—

R/G

Stop lamp switch

When depressing brake pedal

Battery voltage

When releasing brake pedal

A/T fluid tempera-
ture sensor

When ATF temperature is 20°C (68°F).

1.5V

When ATF temperature is 80°C (176°F).

0.5V

Ground

—

*: These terminals are connected to the Data link connector.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

TCM Terminals and Reference Value (Cont’d)

AT-100

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