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Infiniti FX35 / FX45. Manual - part 55

AT-148

< SERVICE INFORMATION >

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

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-160

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 the control valve with TCM. Refer to

AT-215, "Control Valve with TCM and A/T Fluid Tem-

perature Sensor 2"

>> Repair or replace damaged parts.

CHECK DTC

Perform

AT-147, "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-18

0.6 - 0.8 A

Direct clutch engaged. Refer to

AT-18

0 - 0.05 A

DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE

AT-149

< SERVICE INFORMATION >

DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE

Description

INFOID:0000000001327295

High and low reverse 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-III Reference Value in Data Monitor Mode

INFOID:0000000001327296

On Board Diagnosis Logic

INFOID:0000000001327297

Diagnostic trouble code “P1767 HLR/C SOL/CIRC” with CONSULT-III or 8th judgement flicker without CON-
SULT-III 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

INFOID:0000000001327298

• Harness or connectors

(Solenoid circuit is open or shorted.)

• High and low reverse clutch solenoid valve

DTC Confirmation Procedure

INFOID:0000000001327299

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-III

Turn ignition switch ON.

Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III
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: “2”

⇒

“3” (HLR/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, "Diagnosis Procedure"

WITH GST

Follow the procedure “WITH CONSULT-III”.

Diagnosis Procedure

INFOID:0000000001327300

CHECK INPUT SIGNAL

With CONSULT-III

Turn ignition switch ON.

Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.

Start the engine.

Item name

Condition

Display value (Approx.)

HLR/C SOL

High and low reverse clutch disengaged. Refer to

AT-18

0.6 - 0.8 A

High and low reverse clutch engaged. Refer to

AT-18

0 - 0.05 A

AT-150

< SERVICE INFORMATION >

DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE

Read out the value of “HLR/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-160

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 the control valve with TCM. Refer to

AT-215, "Control Valve with TCM and A/T Fluid Tem-

perature Sensor 2"

>> Repair or replace damaged parts.

CHECK DTC

Perform

AT-149, "DTC Confirmation Procedure"

OK or NG

>> INSPECTION END

>> GO TO 2.

Item name

Condition

Display value
(Approx.)

HLR/C SOL

High and low reverse clutch disengaged. Refer to

AT-18

0.6 - 0.8 A

High and low reverse clutch engaged. Refer to

AT-18

0 - 0.05 A

DTC P1772 LOW COAST BRAKE SOLENOID VALVE

AT-151

< SERVICE INFORMATION >

DTC P1772 LOW COAST BRAKE SOLENOID VALVE

Description

INFOID:0000000001327307

Low coast brake solenoid valve is turned ON or OFF 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-III Reference Value in Data Monitor Mode

INFOID:0000000001327308

On Board Diagnosis Logic

INFOID:0000000001327309

Diagnostic trouble code “P1772 LC/B SOLENOID/CIRC” with CONSULT-III or 7th judgement flicker without
CONSULT-III is detected when TCM detects an improper voltage drop when it tries to operate the solenoid
valve.

Possible Cause

INFOID:0000000001327310

• Harness or connectors

(Solenoid circuit is open or shorted.)

• Low coast brake solenoid valve

DTC Confirmation Procedure

INFOID:0000000001327311

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-III

Turn ignition switch ON.

Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III
and check monitor “MANU MODE SW” and “GEAR”.

Touch “START”.

Start engine.

Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
MANU MODE SW: ON
GEAR: “1” or “2” (LC/B ON/OFF)

If DTC is detected, go to

AT-151, "Diagnosis Procedure"

WITH GST

Follow the procedure “WITH CONSULT-III”.

Diagnosis Procedure

INFOID:0000000001327312