Nissan Frontier. Manual

DLN-14

< SYSTEM DESCRIPTION >

[TRANSFER: TX15B]

4WD SYSTEM

CAN Communication

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Refer to

LAN-4, "System Description"

Cross-Sectional View

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Transfer control device F58

Transfer control unit M152, M153
(View with lower instrument panel LH
removed.)

Park/neutral position switch F66
(M/T models)

Combination meter M24
A: 4WD warning lamp
B: 4LO indicator lamp
C: 4WD shift indicator lamp
D: ATP warning lamp (A/T models)

4WD shift switch M141

Mainshaft

Rear case

Oil pump assembly

Clutch gear

2-4 shift fork

2-4 sleeve

Drive chain

Sprocket

L-H shift fork

10. L-H sleeve

11. Internal gear

12. Front case

13. Planetary carrier assembly

14. Sun gear assembly

15. L-H shift rod

16. Control shift rod A/T

17. Companion flange

18. Front drive shaft

19. Control shift rod M/T

20. Transfer control device

SDIA3418E

4WD SYSTEM

DLN-15

< SYSTEM DESCRIPTION >

[TRANSFER: TX15B]

DLN

Power Transfer

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POWER TRANSFER DIAGRAM

POWER TRANSFER FLOW

Mainshaft

Clutch gear

2-4 sleeve

Drive chain

Sprocket

L-H sleeve

Planetary carrier assembly

Sun gear assembly

Front drive shaft

WDIA0223E

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

DLN-17

< SYSTEM DESCRIPTION >

[TRANSFER: TX15B]

DLN

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

CONSULT Function (ALL MODE AWD/4WD)

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FUNCTION

CONSULT can display each diagnostic item using the following direct diagnostic modes.

SELF DIAGNOSTIC RESULT

Operation Procedure

1. Connect “CONSULT”.
2. With engine at idle, touch “SELF-DIAG RESULTS”.

Display shows malfunction experienced since the last erasing operation.

NOTE:

The details for "TIME" are as follows:

• "0": Error currently detected with transfer control unit.

• Except for "0": Error detected in the past and memorized with transfer control unit.

Detects frequency of driving after DTC occurs (frequency of turning ignition switch "ON/OFF").

How to Erase Self-diagnostic Results

1. Perform applicable inspection of malfunctioning item and then repair or replace.
2. Start engine and select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT.
3. Touch “ERASE” on CONSULT screen to erase DTC memory.

CAUTION:

If memory cannot be erased, perform applicable diagnosis.

SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT)

Description

If the engine starts when there is something wrong with the 4WD system, the 4WD warning lamp turns ON or

flickers in the combination meter. When the system functions properly, the warning lamp turns ON when the

ignition switch is turned to “ON”, and it turns OFF after engine starts. To locate the cause of a problem, start

the self-diagnosis function. The 4WD warning lamp in the combination meter will indicate the problem area by

flickering according to the self-diagnostic results. Refer to

DLN-59, "DTC Index"

Diagnostic Procedure (A/T models)

1. Warm up engine.
2. Turn ignition switch “ON” and “OFF” at least twice, and then turn ignition switch “OFF”.
3. Move A/T selector lever to “P” position.
4. Turn 4WD shift switch to “2WD” position.
5. Turn ignition switch “ON”. (Do not start engine.)
6. 4WD warning lamp should turn ON.

If 4WD warning lamp does not turn ON, refer to

DLN-73, "Diagnosis Procedure"

7. Move A/T selector lever to “R” position.
8. Turn 4WD shift switch to “2WD”, “4H” and “2WD” in order.
9. Move A/T selector lever to “P” position.
10. Turn 4WD shift switch to “4H”, “2WD” and “4H” in order.
11. Move A/T selector lever to “N” position.
12. Turn 4WD shift switch to “2WD” position.
13. Move A/T selector lever to “P” position.
14. Read the flickering of 4WD warning lamp.

Direct Diagnostic Mode

Description

Self Diagnostic Result

The transfer control unit self diagnostic results are displayed.

Data Monitor

The transfer control unit input/output data is displayed in real time.

CAN Diag Support Monitor

The result of transmit/receive diagnosis of CAN communication is displayed.

Nissan Frontier. Manual - part 278