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Infiniti F50. Manual - part 50

TROUBLE DIAGNOSIS

AT-85

Y/R

Power supply
(out)

–

Battery voltage

–

W/L

Low coast brake
solenoid valve

When

vehicle
cruises

When the solenoid valve is operating (when running in M1-
1 gear or M2-2 gear)

Battery voltage

When the solenoid valve is not operating (when running in
“D”)

Ground

–

B/W

SEL4

–

W/G

SEL1 (pressure
switch 2)

–

Y/B

Fluid temperature
sensor 2

When ATF temperature about 0

C (32

2.2V

When ATF temperature about 20

C (68

1.7V

When ATF temperature about 80

C (176

0.45V

Front brake sole-
noid valve

When

vehicle
cruises

When the solenoid valve is operating (other than 4th gear)

More than 2V

When the solenoid valve is not operating (4th gear)

TCC solenoid
valve

When lock-up

More than 2V

When not lock-up

Direct clutch sole-
noid valve

When the solenoid valve is operating (1st gear or 5th gear)

More than 2V

When the solenoid valve is not operating (2nd gear, 3rd
gear, or 4th gear)

P/B

SEL2 (pressure
switch 5)

–

PU/W

K-line (CONSULT-
II signal)

The terminal is connected to the data link connector for CONSULT-II.

Ground

–

G/Y

PSC2 (pressure
switch 6)

When

vehicle
cruises

When high and low reverse clutch solenoid valve “ON”.

When high and low reverse clutch solenoid valve “OFF”.

Battery voltage

Y/B

Vehicle speed
sensor A/T (revo-
lution sensor)

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

CAUTION:

Connect the data link connector to the vehicle-side
diagnosis connector.

185 (Hz)

R/W

PNP switch 1

Selector lever in “P” position.

Battery voltage

Selector lever in “N” position.

Less than 2.5V

PNP switch 2

Selector lever in “P” position.

Battery voltage

Selector lever in “D” position.

Less than 2.5V

G/R

Power supply

–

Battery voltage

–

Terminal

No.

Wire

color

Item

Condition

Data (Approx.)

AT-86

TROUBLE DIAGNOSIS

CONSULT-II

ECS0083J

After performing “SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)” (Refer to

AT-87

), place check

marks for results on the

AT-46, "DIAGNOSTIC WORKSHEET"

. Reference pages are provided following the

items.

NOTICE:
1.

The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.

Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:

–

Actual shift schedule has more or less tolerance or allowance,

–

Shift schedule indicated in Service Manual refers to the point where shifts start, and

–

Gear position displayed on CONSULT-II indicates the point where shifts are completed.

Display of solenoid valves on CONSULT-II changes at the start of shifting, while gear position is displayed
upon completion of shifting (which is computed by TCM).

B/Y

PSB2 (pressure
switch 1)

When

vehicle
cruises

When front brake solenoid valve “OFF”.

Battery voltage

When front brake solenoid valve“ ON”.

L/Y

Turbine revolution
sensor 1

When running at 50 km/h (31 MPH) in 4th gear with the
closed throttle position signal “OFF”, use the CONSULT-II
pulse frequency measuring function.

CAUTION:

Connect the data link connector to the vehicle-side
diagnosis connector.

1.3 (kHz)

PNP switch 3

Selector lever in “D” position.

Battery voltage

Selector lever in “R” position.

Less than 2.5V

PNP switch 4

Selector lever in “D” position.

Less than 2.5V

Selector lever in “P” position.

Battery voltage

Y/G

DATA BIT1

–

Back-up lamp
relay

Selector lever in “R” position.

Selector lever in other positions.

Battery voltage

G/R

Power supply

–

Battery voltage

–

Turbine revolution
sensor 2

When

vehicle
cruises

When moving at 20 km/h (12 MPH) in 1st gear with the
closed throttle position signal “OFF”, use the CONSULT-II
pulse frequency measuring function.

CAUTION:

Connect the data link connector to the vehicle-side
diagnosis connector.

1.3 (kHz)

Ground

–

G/W

PNP switch 3
(monitor)

Selector lever in “D” position.

Battery voltage

Selector lever in “R” position.

Less than 2.5V

B/W

PNP relay
(Starter relay)

Selector lever in “N”,“ P” position.

Battery voltage

Selector lever in other positions.

Terminal

No.

Wire

color

Item

Condition

Data (Approx.)

TROUBLE DIAGNOSIS

AT-87

Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II
unit.

CONSULT-II REFERENCE VALUE

SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)

CONSULT-II setting procedure

●

For details, refer to the separate “CONSULT-II Operations Man-
ual”.

Turn ignition switch “OFF” position.

Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in instrument lower panel on
driver side.

Turn ignition switch “ON” position.

Touch “START”.

Touch “ENGINE” for OBD-II detected items or touch “A/T” for
TCM self-diagnosis.
If “A/T” or “ENGINE” is not indicated, go to

GI-38, "CONSULT-II

Data Link Connector (DLC) Circuit"

Item name

Condition

Display value (Approx.)

ATF TEMP SE 1

C (32

F) - 20

C (68

F) - 80

C (176

2.2 - 1.8 - 0.6 V

ATF TEMP SE 2

2.2 - 1.7 - 0.45 V

TCC SOLENOID

When perform slip lock-up

0.2 - 0.4 A

When perform lock-up

0.4 - 0.6 A

PBIB0196E

SAT586J

SAT014K

AT-88

TROUBLE DIAGNOSIS

Touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs REAL-TIME SELF-DIAGNOSIS.
Also, any malfunction detected while in this mode will be dis-
played at real time.

Self-diagnostic result test mode

X: Applicable

—: Not applicable

SAT987J

Items (CONSULT-

II screen terms)

Malfunction is detected when...

TCM self-diagnosis

OBD-II (DTC)

A/T CHECK

indicator

lamp

“A/T” with

CONSULT-II

MIL indicator

lamp*1,

“ENGINE” with

CONSULT-II or

GST

CAN COMM CIR-
CUIT

●

When a malfunction is detected in CAN communications

U1000

STARTER RELAY/
CIRC

●

If this signal is ON other than in P or N position, this is
judged to be a malfunction.
(And if it is OFF in P or N position, this too is judged to be a
malfunction.)

P0615

—

PNP SW/CIRC

●

PNP switch 1-4 signals input with impossible pattern

●

PNP switch 3 monitor terminal cut line

●

P position is detected from N position without any other
position being detected in between.

P0705

VEH SPD SEN/
CIR AT (Revolution
sensor)

●

Signal from vehicle speed sensor A/T (Revolution sensor)
not input due to cut line or the like

●

Unexpected signal input during running

●

After ignition switch is turned ON, unexpected signal input
from vehicle speed sensor MTR before the vehicle starts
moving

P0720

ENGINE SPEED
SIG

●

TCM does not receive the CAN communication signal from
the ECM.

P0725

—

TCC SOLENOID/
CIRC

●

Normal voltage not applied to solenoid due to cut line,
short, or the like

P0740

A/T TCC S/V
FNCTN

●

A/T cannot perform lock-up even if electrical circuit is good.

●

TCM detects as irregular by comparing difference value
with slip rotation.

P0744

P0744*2

L/PRESS SOL/
CIRC

●

Normal voltage not applied to solenoid due to cut line,
short, or the like

●

TCM detects as irregular by comparing target value with
monitor value.

P0745

TCM-POWER
SUPPLY

●

When the power supply to the TCM is cut “OFF”, for exam-
ple because the battery is removed, and the self-diagnos-
tics memory function stops

●

This is not a malfunction message (Whenever shutting
“OFF” a power supply to the TCM, this message appears
on the screen.)

—

P1701

—

TCM·RAM

●

TCM memory (RAM) is malfunctioning.

—

P1702

—

TCM·ROM

●

TCM memory (ROM) is malfunctioning.

—

P1703

—

TCM·EEPROM

●

TCM memory (EEP ROM) is malfunctioning.

—

P1704

—

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