Infiniti I35 (A33). Manual — part 52

9

CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (Without CONSULT-II)

Without CONSULT-II

1. Start engine.
2. Check voltage between TCM harness connector F50 terminal 47 (G) and ground while warming up A/T.

SAT354JB

Voltage:

Cold [20°C (68°F)]

→

Hot [80°C (176°F)]:

Approximately 1.5V

→

0.5V

3. Turn ignition switch to OFF position.
4. Disconnect TCM harness connector.
5. Check resistance between TCM harness connector F50 terminal 42 (B) and ground. Refer to wiring diagram — AT —

BA/FTS.

Continuity should exist.

OK or NG

OK

©

GO TO 10.

NG

©

GO TO 3.

10

CHECK DTC

Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-200.

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 11.

11

CHECK TCM INSPECTION

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

OK or NG

OK

©

INSPECTION END

NG

©

Repair or replace damaged parts.

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM

POWER SOURCE)

Diagnostic Procedure (Cont’d)

AT-205

SAT605K

Description

NHAT0082

The vehicle speed sensor·MTR is built into the speedometer
assembly. The sensor functions as an auxiliary device to the revo-
lution sensor when it is malfunctioning. The TCM will then use a
signal sent from the vehicle speed sensor·MTR.

TCM TERMINALS AND REFERENCE VALUE

NHAT0082S01

Remarks: Specification data are reference values.

Terminal

No.

Wire color

Item

Condition

Judgement

standard

(Approx.)

40

PU/R

Vehicle speed
sensor

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.

42

B

Sensor ground

—

0V

On Board Diagnosis Logic

NHAT0249

Diagnostic trouble code VHCL SPEED SEN·MTR with CONSULT-II
or 2nd judgement flicker without CONSULT-II is detected when
TCM does not receive the proper voltage signal from the sensor.

Possible Cause

NHAT0250

Check the following items.

I

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

I

Combination meter

I

ABS/TCS control unit (with TCS)

I

Vehicle speed sensor (with VDC)

DTC VEHICLE SPEED SENSOR·MTR

Description

AT-206

SAT014K

Diagnostic Trouble Code (DTC) Confirmation
Procedure

NHAT0251

SAT860K

SAT544K

CAUTION:

I

Always drive vehicle at a safe speed.

I

If conducting this “DTC Confirmation Procedure” again,
always turn ignition switch OFF and wait at least 10 sec-
onds before continuing.

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

WITH CONSULT-II

NHAT0251S01

1)

Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.

2)

Start engine and accelerate vehicle from 0 to 25 km/h (0 to 16
MPH).

WITHOUT CONSULT-II

NHAT0251S02

1)

Start engine.

2)

Drive vehicle under the following conditions:
Selector lever in D and vehicle speed higher than 25 km/h (16
MPH).

3)

Perform self-diagnosis.
Refer to AT-52, “TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)”.

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DTC VEHICLE SPEED SENSOR·MTR

Diagnostic Trouble Code (DTC) Confirmation Procedure

AT-207

Wiring Diagram — AT — VSSMTR

NHAT0083

MAT488B

DTC VEHICLE SPEED SENSOR·MTR

Wiring Diagram — AT — VSSMTR

AT-208