Infiniti QX56 (Z62). Manual - part 1373

 

  Index      Infiniti     Infiniti QX56 (Z62) - service repair manual 2011 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  1371  1372  1373  1374   ..

 

 

Infiniti QX56 (Z62). Manual - part 1373

 

 

C1728 RECEIVER ID

WT-39

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

C1728 RECEIVER ID

DTC Logic

INFOID:0000000006225514

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION 

With CONSULT-III

1.

Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.

2.

Stop the vehicle.

3.

Perform self-diagnosis for “AIR PRESSURE MONITOR”.

Is DTC “C1728” detected?

YES

>> Proceed to 

WT-39, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225515

1.

CHECK TIRE PRESSURE RECEIVER INPUT SIGNAL

1.

Turn the ignition switch ON.

CAUTION:

Never start engine. 

2.

Use an oscilloscope and check the input signal waveform between the low tire pressure warning control
unit harness connector and ground.

STANDBY STATUS

WHEN SIGNAL IS RECEIVED

Is the inspection result normal?

DTC

Display Item

Malfunction detected condition

Possible causes

C1728

RECEIVER ID NO REG

Receiver ID registration cannot be performed.

• Tire pressure receiver malfunc-

tion

• Low tire pressure warning con-

trol unit malfunction

Low tire pressure warning control unit

Value (Approx.)

Connector

Terminal

M96

3

Ground

Approx. 4.5 V

4

5

6

Low tire pressure warning control unit

Value (Approx.)

Connector

Terminal

M96

3

Ground

Approx. 4.5 V

4

5

6

OCC3879D

OCC3880D

WT-40

< DTC/CIRCUIT DIAGNOSIS >

C1728 RECEIVER ID

YES

>> Check connector for loose connection and then perform “DTC CONFIRMATION PROCEDURE”

(self-diagnosis) again. Refer to 

WT-39, "DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK TIRE PRESSURE RECEIVER POWER SUPPLY CIRCUIT 

1.

Disconnect the tire pressure receiver harness connector.

2.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

3.

Check the voltage between tire pressure receiver harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning harness or connector. 

3.

CHECK TIRE PRESSURE RECEIVER GROUND CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect low tire pressure warning control unit harness connector and tire pressure receiver harness
connector.

3.

Check the continuity between low tire pressure warning control unit harness connector and tire pressure
receiver harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the malfunctioning harness or connector. 

4.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT CIRCUIT

Check the low tire pressure warning control unit circuit. Refer to 

WT-45, "Diagnosis Procedure"

Is the low tire pressure warning control unit circuit normal?

YES

>> Replace the tire pressure receiver. Refer to 

WT-68, "FRONT TIRE PRESSURE RECEIVER :

Removal and Installation"

 (Front), 

WT-68, "REAR TIRE PRESSURE RECEIVER : Removal and

Installation"

 (Rear).

NO

>> Repair or replace error-detected parts.

Tire pressure receiver

Voltage

Connector

Terminal

E53 (Front LH)

1

Ground

Approx. 9 - 16 V

E19 (Front RH)

B43 (Rear LH)

B212 (Rear RH)

Low tire pressure warning control unit

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M96

26

E53 (Front LH)

4

Existed

25

E19 (Front RH)

24

B43 (Rear LH)

23

B212 (Rear RH)

C1729 VEHICLE SPEED SIGNAL

WT-41

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

C1729 VEHICLE SPEED SIGNAL

DTC Logic

INFOID:0000000006225516

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

With CONSULT-III

1.

Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more without stopping.

2.

Stop the vehicle.

3.

Perform self-diagnosis for “AIR PRESSURE MONITOR”.

Is DTC “C1729” detected?

YES

>> Proceed to 

WT-41, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225517

1.

PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

With CONSULT-III

Perform self-diagnosis for “ABS”.
Is any DTC detected?

YES

>> Check malfunctioning circuit.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS AGAIN

With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to 

WT-41, "DTC Logic"

.

Is DTC “C1729” detected?

YES

>> Replace the low tire pressure warning control unit. Refer to 

WT-65, "Removal and Installation"

.

NO

>> GO TO 3.

3.

CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT INPUT/OUTPUT SIGNAL

Check the low tire pressure warning control unit input/output signal values. Refer to 

WT-14, "Reference

Value"

Is the inspection result normal?

YES

>> Check pin terminal and connection of each harness connector for malfunctioning conditions. 

NO

>> Replace the low tire pressure warning control unit. Refer to 

WT-65, "Removal and Installation"

.

DTC

Display Item

Malfunction detected condition

Possible causes

C1729

VHCL SPEED SIG ERR

Vehicle speed signal not detected.

• CAN communication malfunction
• Low tire pressure warning control 

unit malfunction

• ABS actuator and electric unit 

(control unit) malfunction

WT-42

< DTC/CIRCUIT DIAGNOSIS >

C1750, C1751, C1752, C1753 RECEIVER

C1750, C1751, C1752, C1753 RECEIVER

DTC Logic

INFOID:0000000006225518

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION

With CONSULT-III

1.

Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.

2.

Stop the vehicle.

3.

Perform self-diagnosis for “AIR PRESSURE MONITOR”.

Is DTC “C1750”, “C1751”, “C1752”, or “C1753” detected?

YES

>> Proceed to 

WT-42, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006225519

1.

CHECK TIRE PRESSURE RECEIVER INPUT SIGNAL

1.

Turn the ignition switch ON.

CAUTION:

Never start engine. 

2.

Use an oscilloscope and check the input signal waveform between the low tire pressure warning control
unit harness connector and ground.

STANDBY STATUS

DTC

Display Item

Malfunction detected condition

Possible causes

C1750

[RECEIVER ERR] FL

The front LH tire pressure receiver dose not re-
ceive a signal.

Tire pressure receiver mal-
function

C1751

[RECEIVER ERR] FR

The front RH tire pressure receiver dose not re-
ceive a signal.

C1752

[RECEIVER ERR] RR

The rear RH tire pressure receiver dose not re-
ceive a signal.

C1753

[RECEIVER ERR] RL

The rear LH tire pressure receiver dose not receive 
a signal.

Low tire pressure warning control unit

Value (Approx.)

Connector

Terminal

M96

3

Ground

Approx. 4.5 V

4

5

6

OCC3879D

 

 

 

 

 

 

 

Content   ..  1371  1372  1373  1374   ..