Nissan Pathfinder. Manual - part 1157

STALL TEST

TM-87

< BASIC INSPECTION >

[CVT: RE0F10E]

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STALL TEST

Work Procedure

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INSPECTION

1. Check the engine oil level. Replenish if necessary. Refer to 

LU-8, "Inspection"

.

2. Check for leak of the CVT fluid. Refer to 

TM-185, "Inspection"

.

3. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid temperature is 50 to 80

°C (122 to

176

°F).

4. Be sure to apply the parking brake and block the tires. 
5. Start the engine, depress the brake pedal and shift the selector lever to “D” position. 
6. While depressing the brake pedal, depress the accelerator pedal gradually. 
7. Read the stall speed quickly and release your foot from the accelerator pedal quickly. 

CAUTION:

Do not depress the accelerator pedal for 5 seconds or more during the test. 

8. Shift the selector lever to “N” position.
9. Cool the CVT fluid. 

CAUTION:

Run the engine with the idle speed for at least 1 minute. 

10. Put the selector lever to the R position and perform Step 6 to Step 9 again. 

NARROWING-DOWN MALFUNCTIONING PARTS

O: Within the stall speed standard value.
H: Stall speed is higher than the standard value. 
L: Stall speed is lower than the standard value. 

Stall speed

: Refer to 

TM-219, "Stall Speed"

.

Selector lever position

Possible cause

D

R

Stall speed

H

O

• Forward clutch

O

H

• Reverse brake 

L

L

• Engine
• Torque converter one way clutch 

H

H

• Line pressure is low. 
• Primary pulley 
• Secondary pulley
• Chain belt

TM-88

< BASIC INSPECTION >

[CVT: RE0F10E]

CVT POSITION

CVT POSITION

Inspection and Adjustment

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INSPECTION

1. Turn ON the ignition switch with the shift selector at the “P” position. 
2. Press the shift selector button with the brake pedal depressed, and confirm that the shift selector can be

moved to positions other than “P”. Also confirm that movement is not allowed from the “P” position to other

position without depressing the brake pedal. 

3. Move the shift selector and check for “excessive effort”, “sticking”, “noise” or “rattle”.
4. Confirm that shift selector stops at each position with the feel of engagement when it is moved through all

the positions. Check whether or not the actual position the shift selector is in matches the position shown

by the transaxle body.

5. Make sure that the shift selector is moved to all the shift posi-

tions in the manner shown.

• (A): Press shift selector button to operate shift selector, while

depressing the brake pedal.

• (B): Press shift selector button to operate shift selector.

• (C): Shift selector can be operated without pressing the shift

selector button.

6. When the shift selector button is pressed without applying for-

ward/backward force to the shift selector at “P”, “R”, “N”, “D” or

“Ds” positions, there should be no “sticking” on the shift selector

button operation. 

7. Check that the back-up lamps do not illuminate when the shift

selector is in the “P” position.

8. Check that the engine can be started with the shift selector in the “P” and “N” positions only.
9. Check that the transaxle is locked completely when the shift selector is in the “P” position.

ADJUSTMENT

1. Move the selector lever to the “P” position.

CAUTION:

Rotate the wheels at least a quarter turn and be certain the Park position mechanism is fully

engaged.

2. Loosen control cable nut (A) and set manual lever (B) to the “P”

position. 

CAUTION:

Do not apply force to the manual lever. 

3. Tighten control cable nut to the specified torque. Refer to 

TM-

191, "Exploded View"

.

CAUTION:

Hold the manual lever securely in the "P" position when

tightening control cable nut. 

AWDIA1019ZZ

JSDIA1875ZZ

U0073 COMMUNICATION BUS A OFF

TM-89

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10E]

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DTC/CIRCUIT DIAGNOSIS

U0073 COMMUNICATION BUS A OFF

DTC Logic

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DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at

least 10 seconds, then perform the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine and wait for at least 5 seconds.

2. Check the DTC.
Is “U0073” detected?

YES

>> Go to 

TM-89, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009177539

For the diagnosis procedure, refer to 

LAN-20, "Trouble Diagnosis Flow Chart"

. 

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible causes

U0073

COMM BUS A OFF
(Control Module Communica-
tion Bus A Off)

TCM communication blockage lasts for 2 sec-
onds or more when turning ON the ignition 
switch. (Communication not established.)

Harness or connector
(CAN communication line is error)

TM-90

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10E]

U0100 LOST COMMUNICATION (ECM A)

U0100 LOST COMMUNICATION (ECM A)

DTC Logic

INFOID:0000000009177540

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at

least 10 seconds, then perform the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine and wait for at least 5 seconds.

2. Check the DTC.
Is “U0100” detected?

YES

>> Go to 

TM-90, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009177541

For the diagnosis procedure, refer to 

LAN-20, "Trouble Diagnosis Flow Chart"

. 

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible causes

U0100

LOST COMM (ECM A)
(Lost Communication With 
ECM/PCM A)

When the ignition switch is ON, TCM is un-
able to receive the CAN communications 
signal from ECM continuously for 2 sec-
onds or more.

• ECM
• Harness or connector

(CAN communication line is open or 
shorted)