Nissan Silvia. Instruction — part 32

SAT342HA

Description

NMAT0240

The A/T fluid temperature sensor detects the A/T fluid temperature
and sends a signal to the TCM.

SAT021J

CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE

NMAT0240S01

Remarks: Specification data are reference values.

Monitor item

Condition

Specification

A/T fluid temperature
sensor

Cold [20°C (68°F)]

"

Hot [80°C (176°F)]

Approximately 1.5V

"

Approximately 0.5V

TCM TERMINALS AND REFERENCE VALUE

NMAT0240S02

Remarks: Specification data are reference values.

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

10

G/OR

Power source

When turning ignition switch to “ON”.

Battery volt-
age

When turning ignition switch to “OFF”.

0V

19

G/OR

Power source

Same as No. 10

28

R/W

Power source
(Memory back-up)

or

When turning ignition switch to “OFF”.

Battery volt-
age

When turning ignition switch to “ON”.

Battery volt-
age

42

G/Y

Throttle position
sensor
(Ground)

—

—

47

W/R

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

GI

MA

EM

LC

EC

FE

CL

MT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

Description

AT-125

ON BOARD DIAGNOSIS LOGIC

NMAT0240S03

Diagnostic trouble code

Malfunction is detected when ...

Check item (Possible cause)

: BATT/FLUID TEMP SEN

TCM receives an excessively low or high
voltage from the sensor.

I

Harness or connectors
(The sensor circuit is open or shorted.)

I

A/T fluid temperature sensor

: 8th judgement flicker

SAT014K

SAT821H

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

NMAT0240S05

After the repair, perform the following procedure to confirm the
malfunction is eliminated.

WITH CONSULT-II

NMAT0240S06

1)

Start engine.

2)

Select “SELF-DIAG RESULTS” mode for “A/T” with CON-
SULT-II.

3)

Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10
km/h (6 MPH), throttle opening greater than 1/8 of the full open
position, engine speed higher than 450 rpm and driving for
more than 10 minutes.

WITHOUT CONSULT-II

NMAT0240S07

1)

Start engine.

2)

Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10
km/h (6 MPH), throttle opening greater than 1/8 of the full open
position, engine speed higher than 450 rpm and driving for
more than 10 minutes.

3)

Perform self-diagnosis.
Refer

to

SELF-DIAGNOSTIC

PROCEDURE

(Without

CONSULT-II), AT-37.

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

Description (Cont’d)

AT-126

Wiring Diagram — AT — BA/FTS

NMAT0241

TAT262

GI

MA

EM

LC

EC

FE

CL

MT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

Wiring Diagram — AT — BA/FTS

AT-127

Diagnostic Procedure

NMAT0242

1

CHECK TCM POWER SOURCE STEP 1

1. Turn ignition switch to ON position.

(Do not start engine.)

2. Check voltage between TCM harness connector M25, M26 terminal Nos. 10 (G/OR), 19 (G/OR), 28 (R/W) and ground.

SAT611J

OK or NG

OK

©

GO TO 2.

NG

©

GO TO 3.

2

CHECK TCM POWER SOURCE STEP 2

1. Turn ignition switch to OFF position.
2. Check voltage between TCM harness connector M26 terminal No. 28 (R/W) and ground.

SAT612JE

OK or NG

OK

©

GO TO 4.

NG

©

GO TO 3.

3

DETECT MALFUNCTIONING ITEM

Check the following items:

I

Harness for short or open between ignition switch and TCM terminals 10, 19 and 28 (Main harness)

I

Ignition switch and 10A fuse [No. 12 or 28, located in the fuse block (J/B)]
Refer to EL-7, “Schematic”.

OK or NG

OK

©

GO TO 4.

NG

©

Repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN

Diagnostic Procedure

AT-128