Nissan Frontier D40. Manual - part 1149

C1729 VEHICLE SPEED SIGNAL

WT-19

< COMPONENT DIAGNOSIS >

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C1729 VEHICLE SPEED SIGNAL

Description

INFOID:0000000005275735

The vehicle speed signal is not being detected by the BCM.

DTC Logic

INFOID:0000000005275736

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULTS

1.

On SELECT DIAG MODE, select the SELF-DIAG RESULT screen.

2.

Check display contents on SELF DIAG RESULT screen.

Is the CAN COMM CIRCUIT displayed in the self-diagnosis display?

YES

>> Refer to 

WT-19, "Diagnosis Procedure"

.

NO

>> Inspection end.

Diagnosis Procedure

INFOID:0000000005275737

MALFUNCTION CODE NO. 52 (DTC C1729)

1.

CHECK SELF-DIAGNOSTIC RESULTS

1.

On SELECT DIAG MODE, select the SELF-DIAG RESULT screen.

2.

Check display contents on SELF DIAG RESULT screen.

Is the CAN COMM CIRCUIT displayed in the self-diagnosis display?

YES

>> Perform trouble diagnosis for CAN communication system. Refer to 

LAN-14, "Trouble Diagnosis

Flow Chart"

.

NO

>> Check combination meter. Refer to 

MWI-24, "CONSULT-III Function (METER/M&A)"

.

Special Repair Requirement

INFOID:0000000005548869

Perform preliminary check.  Refer to 

WT-5, "Preliminary Check"

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DTC

CONSULT - III

DTC detecting condition

C1729

VHCL SPEED SIG ERR

Vehicle speed signal is in error.

WT-20

< COMPONENT DIAGNOSIS >

C1735 IGNITION SIGNAL

C1735 IGNITION SIGNAL

Description

INFOID:0000000005275739

The BCM monitors the IGN ON signal on the CAN line and compares it to it’s direct IGN ON signal.  When
these two signals do not match, the BCM sets C1735.

DTC Logic

INFOID:0000000005275740

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULTS

1.

On SELECT DIAG MODE, select the SELF-DIAG RESULT screen.

2.

Check display contents on SELF DIAG RESULT screen.

Is C1735 displayed in the self-diagnosis display?

YES

>> Refer to 

WT-20, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005275741

MALFUNCTION CODE NO. 54 (DTC C1735)

1.

CAN IGNITION SIGNAL

Check BCM IGN RLY signal with CONSULT-III. Refer to 

WT-21, "Reference Value"

.

Are the inspection results normal with the ignition switch ON?

YES

>> GO TO 2.

NO

>> Check CAN system. Refer to 

LAN-14, "Trouble Diagnosis Flow Chart"

.

2.

BCM POWER SUPPLY

Check BCM power supply (ignition ON). Refer to 

BCS-29, "Diagnosis Procedure"

.

Is the power supply with the ignition switch ON normal?

YES

>> GO TO 3.

NO

>> Repair power supply as necessary.

3.

DRIVE VEHICLE

Clear DTC and then test drive the vehicle and check the low tire pressure warning lamp.

Does the vehicle operate without any low tire pressure warning lamp?

YES

>> Inspection End.

NO

>> Replace BCM. Refer to 

BCS-54, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000005548870

Perform preliminary check.  Refer to 

WT-5, "Preliminary Check"

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DTC

CONSULT - III

DTC detecting condition

C1735

IGNITION SIGNAL LINE - BCM/TPMS

BCM has detected a mismatch between IGN ON signals.

BCM (BODY CONTROL MODULE)

WT-21

< ECU DIAGNOSIS >

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ECU DIAGNOSIS

BCM (BODY CONTROL MODULE)

Reference Value

INFOID:0000000005548871

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

IGN ON SW

Ignition switch OFF or ACC

OFF

Ignition switch ON

ON

KEY ON SW

Mechanical key is removed from key cylinder

OFF

Mechanical key is inserted to key cylinder

ON

CDL LOCK SW

Door lock/unlock switch does not operate

OFF

Press door lock/unlock switch to the lock side

ON

CDL UNLOCK SW

Door lock/unlock switch does not operate

OFF

Press door lock/unlock switch to the unlock side

ON

DOOR SW-DR

Driver's door closed

OFF

Driver's door opened

ON

DOOR SW-AS

Passenger door closed

OFF

Passenger door opened

ON

DOOR SW-RR

Rear RH door closed

OFF

Rear RH door opened

ON

DOOR SW-RL

Rear LH door closed

OFF

Rear LH door opened

ON

KEY CYL LK-SW

Other than driver door key cylinder LOCK position

OFF

Driver door key cylinder LOCK position

ON

KEY CYL UN-SW

Other than driver door key cylinder UNLOCK position

OFF

Driver door key cylinder UNLOCK position

ON

KEYLESS LOCK

“LOCK” button of key fob is not pressed

OFF

“LOCK” button of key fob is pressed

ON

KEYLESS UNLOCK

“UNLOCK” button of key fob is not pressed

OFF

“UNLOCK” button of key fob is pressed

ON

ACC ON SW

Ignition switch OFF

OFF

Ignition switch ACC or ON

ON

REAR DEF SW

Rear window defogger switch OFF

OFF

Rear window defogger switch ON

ON

LIGHT SW 1ST

Lighting switch OFF

OFF

Lighting switch 1ST

ON

BUCKLE SW

The seat belt (driver side) is unfastened. [Seat belt switch (driver 
side) OFF]

OFF

The seat belt (driver side) is fastened. [Seat belt switch (driver side) 
ON]

ON

KEYLESS PANIC

PANIC button of key fob is not pressed

OFF

PANIC button of key fob is pressed

ON

WT-22

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

RKE LCK-UNLCK

LOCK/UNLOCK button of key fob is not pressed and held simulta-
neously

OFF

LOCK/UNLOCK button of key fob is pressed and held simulta-
neously

ON

RKE KEEP UNLK

UNLOCK button of key fob is not pressed

OFF

UNLOCK button of key fob is pressed and held

ON

HI BEAM SW

Lighting switch OFF

OFF

Lighting switch HI

ON

HEAD LAMP SW 1

Lighting switch OFF

OFF

Lighting switch 2ND

ON

HEAD LAMP SW 2

Lighting switch OFF

OFF

Lighting switch 2ND

ON

AUTO LIGHT SW

Lighting switch OFF

OFF

Lighting switch AUTO

ON

PASSING SW

Other than lighting switch PASS

OFF

Lighting switch PASS

ON

FR FOG SW

Front fog lamp switch OFF

OFF

Front fog lamp switch ON

ON

TURN SIGNAL R

Turn signal switch OFF

OFF

Turn signal switch RH

ON

TURN SIGNAL L

Turn signal switch OFF

OFF

Turn signal switch LH

ON

CARGO LAMP SW

Cargo lamp switch OFF

OFF

Cargo lamp switch ON

ON

OPTICAL SENSOR

Bright outside vehicle

5V

Dark outside vehicle

0V

IGN SW CAN

Ignition switch OFF or ACC

OFF

Ignition switch ON

ON

FR WIPER HI

Front wiper switch OFF

OFF

Front wiper switch HI

ON

FR WIPER LOW

Front wiper switch OFF

OFF

Front wiper switch LO

ON

FR WIPER INT

Front wiper switch OFF

OFF

Front wiper switch INT

ON

FR WASHER SW

Front washer switch OFF

OFF

Front washer switch ON

ON

INT VOLUME

Wiper intermittent dial is in a dial position 1 - 7

1 - 7

FR WIPER STOP

Any position other than front wiper stop position

OFF

Front wiper stop position

ON

VEHICLE SPEED

While driving

Equivalent to speedometer reading

HAZARD SW

Hazard switch OFF

OFF

Hazard switch ON

ON

BRAKE SW

Brake pedal is not depressed

OFF

Brake pedal is depressed

ON

Monitor Item

Condition

Value/Status