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Infiniti G35 (V35). Manual - part 39

DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION

AT-147

WITH GST

Follow the procedure “WITH CONSULT-II”.

Diagnostic Procedure

NCS000FR

CHECK INPUT SIGNALS

With CONSULT-II

Start engine.

Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II.

Drive vehicle in the “D” position (3rd

4th gear), and confirm

the ON/OFF actuation of the “ATF PRES SW 1” and electrical
current value of “FR/B SOLENOID”.

OK or NG

>> GO TO 4.

>> GO TO 2.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to

AT-172, "MAIN POWER SUPPLY AND GROUND CIR-

CUIT"

OK or NG

>> GO TO 3.

>> Repair or replace damaged parts.

DETECT MALFUNCTIONING ITEM

Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.

OK or NG

>> Replace control valve with TCM. Refer to

AT-225, "Control Valve with TCM and A/T Fluid Temper-

ature Sensor 2"

>> Repair or replace damaged parts.

CHECK DTC

Perform

AT-146, "DTC Confirmation Procedure"

OK or NG

>> INSPECTION END

>> GO TO 2.

Item name

Condition

Display value
(Approx.)

FR/B SOLENOID

Front brake engaged. Refer to

AT-19

0.6 - 0.8 A

Front brake disengaged. Refer to

AT-19

0 - 0.05 A

ATF PRES SW 1

Front brake engaged. Refer to

AT-19

Front brake disengaged. Refer to

AT-19

OFF

SCIA4796E

AT-148

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

PFP:31940

Description

NCS000FS

Direct clutch solenoid valve is controlled by the TCM in response to signals sent from the PNP switch, vehicle
speed sensor and accelerator pedal position sensor (throttle position sensor). Gears will then be shifted to the
optimum position.

CONSULT-II Reference Value

NCS000FT

On Board Diagnosis Logic

NCS000FU

●

This is an OBD-II self-diagnostic item.

●

Diagnostic trouble code “P1762 D/C SOLENOID/CIRC” with CONSULT-II or 2nd judgment flicker without
CONSULT-II is detected under the following conditions.

–

When TCM detects an improper voltage drop when it tries to operate the solenoid valve.

–

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

Possible Cause

NCS000FV

●

Harness or connectors.
(Solenoid circuit is open or shorted.)

●

Direct clutch solenoid valve.

DTC Confirmation Procedure

NCS000FW

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II

Turn ignition switch ON.

Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II and check monitor “ACCELE POSI”,
“SLCT LVR POSI” and “GEAR”.

Touch “START”.

Start engine.

Drive vehicle and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POSI: 1.5/8 - 2.0/8
SLCT LVR POSI: “D” position
GEAR: “1”

“2” (D/C ON/OFF)

Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.

If DTC is detected, go to

AT-149, "Diagnostic Procedure"

WITH GST

Follow the procedure “WITH CONSULT-II”.

Item name

Condition

Display value (Approx.)

D/C SOLENOID

Direct clutch disengaged. Refer to

AT-19

0.6 - 0.8 A

Direct clutch engaged. Refer to

AT-19

0 - 0.05 A

BCIA0031E

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

AT-149

Diagnostic Procedure

NCS000FX

CHECK INPUT SIGNAL

With CONSULT-II

Turn ignition switch ON.

Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.

Start the engine.

Read out the value of “D/C SOLENOID” while driving.

OK or NG

>> GO TO 4.

>> GO TO 2.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to

AT-172, "MAIN POWER SUPPLY AND GROUND CIR-

CUIT"

OK or NG

>> GO TO 3.

>> Repair or replace damaged parts.

DETECT MALFUNCTIONING ITEM

Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.

OK or NG

>> Replace control valve with TCM. Refer to

AT-225, "Control Valve with TCM and A/T Fluid Temper-

ature Sensor 2"

>> Repair or replace damaged parts.

CHECK DTC

Perform

AT-148, "DTC Confirmation Procedure"

OK or NG

>> INSPECTION END

>> GO TO 2.

Item name

Condition

Display value
(Approx.)

D/C SOLENOID

Direct clutch disengaged. Refer to

AT-19

0.6 - 0.8 A

Direct clutch engaged. Refer to

AT-19

0 - 0.05 A

SCIA4793E

AT-150

DTC P1764 DIRECT CLUTCH SOLENOID VALVE FUNCTION

PFP:31940

Description

NCS000FY

●

Direct clutch solenoid valve is controlled by the TCM in response to signals sent from the PNP switch,
vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears will then be
shifted to the optimum position.

●

This is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical mal-
function such as control valve sticking, improper solenoid valve operation.

CONSULT-II Reference Value

NCS000FZ

On Board Diagnosis Logic

NCS000G0

●

This is an OBD-II self-diagnostic item.

●

Diagnostic trouble code “P1764 D/C SOLENOID FNCTN” with CONSULT-II or 2nd judgment flicker with-
out CONSULT-II is detected under the following conditions.

–

When TCM detects that actual gear ratio is irregular, and relation between gear position and condition of
ATF pressure switch 5 is irregular during depressing accelerator pedal. (Other than during shift change)

–

When TCM detects that relation between gear position and condition of ATF pressure switch 5 is irregular
during releasing accelerator pedal. (Other than during shift change)

Possible Cause

NCS000G1

●

Harness or connectors.
(Solenoid and switch circuits are open or shorted.)

●

Direct clutch solenoid valve.

●

ATF pressure switch 5.

DTC Confirmation Procedure

NCS000G2

CAUTION:

Always drive vehicle at a safe speed.

NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II

Start engine.

Accelerate vehicle to maintain the following conditions.
ACCELE POSI: 1.5/8 - 2.0/8
SLCT LVR POSI: “D” position
GEAR: “1”

“2” (D/C ON/OFF)

Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.

Perform step “2” again.

Turn ignition switch OFF, then perform step “1” to “3” again.

Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. If DTC (P1764) is detected, refer to

AT-151, "Diagnostic Procedure"

If DTC (P1762) is detected, go to

AT-149, "Diagnostic Procedure"

If DTC (P1845) is detected, go to