Nissan Xterra. Manual - part 661

P1762 DIRECT CLUTCH SOLENOID

TM-157

< DTC/CIRCUIT DIAGNOSIS >

[5AT: RE5R05A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

NG

>> GO TO 2.

2.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to 

TM-164, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace damaged parts.

3.

DETECT MALFUNCTIONING ITEM

Check the following.

• The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG

OK

>> Replace the control valve with TCM. Refer to 

TM-234, "Removal and Installation"

.

NG

>> Repair or replace damaged parts.

4.

CHECK DTC

Perform “DTC Confirmation Procedure”.

• Refer to 

TM-156, "DTC Confirmation Procedure"

.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

TM-158

< DTC/CIRCUIT DIAGNOSIS >

[5AT: RE5R05A]

P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID

P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID

Description

INFOID:0000000009485547

High and low reverse clutch solenoid valve is controlled by the TCM in response to signals sent from the trans-

mission range switch, output speed sensor and accelerator pedal position sensor (throttle position sensor).

Gears will then be shifted to the optimum position.

CONSULT Reference Value in Data Monitor Mode

INFOID:0000000009485548

On Board Diagnosis Logic

INFOID:0000000009485549

• This is an OBD-II self-diagnostic item.

• Diagnostic trouble code “P1767” with CONSULT or 8th judgment flicker without CONSULT 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:0000000009485550

• Harness or connectors

(The solenoid circuit is open or shorted.)

• High and low reverse clutch solenoid valve 

DTC Confirmation Procedure

INFOID:0000000009485551

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

1. Turn ignition switch “ON”. (Do not start engine.)

2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT.

3. Start engine.

4. 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: 2nd 

⇒ 3rd (HLR/C ON/OFF)

Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving

conditions required for this test.

5. If DTC is detected, go to 

TM-158, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT”.

Diagnosis Procedure

INFOID:0000000009485552

1.

CHECK INPUT SIGNAL

With CONSULT

1. Turn ignition switch ON.

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

3. Start the engine.

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

Item name

Condition 

Display value (Approx.)

HLR/C SOL

High and low reverse clutch disengaged. Refer to 

TM-79

.

0.6 - 0.8 A

High and low reverse clutch engaged. Refer to 

TM-79

.

0 - 0.05 A

P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID

TM-159

< DTC/CIRCUIT DIAGNOSIS >

[5AT: RE5R05A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 2.

2.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to 

TM-164, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace damaged parts.

3.

DETECT MALFUNCTIONING ITEM

Check the following.

• The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG

OK

>> Replace the control valve with TCM. Refer to 

TM-234, "Removal and Installation"

.

NG

>> Repair or replace damaged parts.

4.

CHECK DTC

Perform “DTC Confirmation Procedure”.

• Refer to 

TM-158, "DTC Confirmation Procedure"

.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

TM-160

< DTC/CIRCUIT DIAGNOSIS >

[5AT: RE5R05A]

P1772 LOW COAST BRAKE SOLENOID

P1772 LOW COAST BRAKE SOLENOID

Description

INFOID:0000000009485553

Low coast brake solenoid valve is turned “ON” or “OFF” by the TCM in response to signals sent from the trans-

mission range switch, output speed sensor and accelerator pedal position sensor (throttle position sensor).

Gears will then be shifted to the optimum position.

CONSULT Reference Value in Data Monitor Mode

INFOID:0000000009485554

On Board Diagnosis Logic

INFOID:0000000009485555

• This is an OBD-II self-diagnostic item.

• Diagnostic trouble code “P1772” with CONSULT or 7th judgment flicker without CONSULT is detected when

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

Possible Cause

INFOID:0000000009485556

• Harness or connectors

(The solenoid circuit is open or shorted.)

• Low coast brake solenoid valve 

DTC Confirmation Procedure

INFOID:0000000009485557

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

1. Turn ignition switch “ON”. (Do not start engine.)

2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT.

3. Start engine.

4. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

SLCT LVR POSI: “1” or “2”

GEAR: “1st” or “2nd” (LC/B ON/OFF)

5. If DTC is detected, go to 

TM-160, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT”.

Diagnosis Procedure

INFOID:0000000009485558

1.

CHECK INPUT SIGNAL

With CONSULT

1. Turn ignition switch ON.

2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT.

3. Start the engine.

4. Read out the value of “ON OFF SOL” while driving.
OK or NG

OK

>> GO TO 4.

NG

>> GO TO 2.

2.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to 

TM-164, "Diagnosis Procedure"

.

Item name

Condition 

Display value

ON OFF SOL

Low coast brake engaged. Refer to 

TM-79

.

ON

Low coast brake disengaged. Refer to 

TM-79

.

OFF