Nissan Frontier D22. Manual - part 939

WT-20

TROUBLE DIAGNOSIS FOR SYMPTOMS

3. 

CHECK POWER SUPPLY CIRCUIT 2

1.

Turn ignition switch ON.

2.

Check voltage between low tire pressure warning control unit connector M143 terminal 2 (G/W), 4 (G/W)
and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Check low tire pressure warning control unit power sup-

ply circuit for open or short.

4. 

CHECK GROUND CIRCUIT

●

Check continuity between low tire pressure warning control unit connector M143 terminal 11(B) and
ground.

OK or NG

OK

>> Replace low tire pressure warning control unit.

NG

>> Repair or replace low tire pressure warning control unit

ground circuit.

Inspection 3: Warning Lamp Blinks When Ignition Switch Is Turned On

EES000Y8

DIAGNOSTIC PROCEDURE

1. 

CHECK CIRCUIT

1.

Disconnect low tire pressure warning control unit connector M143.

2.

Check continuity between low tire pressure warning control unit connector M143 terminal 8(OR/L) and
ground.

OK or NG

OK

>> Replace low tire pressure warning control unit.

NG

>> Repair circuit or harness connector.

Terminals

Voltage

(Approx.)

(+)

(–)

Connector

Terminal

(Wire color)

Ground

12V

M143

2 (G/W)

M143

4 (G/W)

WEIA0014E

Terminals

Continuity

(+)

(–)

Connector

Terminal

(Wire color)

Ground

Yes

M143

11 (B)

WEIA0015E

Terminals

Continuity

(+)

(–)

Connector

Terminal

(Wire color)

Ground

Yes

M143

8 (OR/L)

WEIA0016E

TROUBLE DIAGNOSIS FOR SYMPTOMS

WT-21

C

D

F

G

H

I

J

K

L

M

A

B

WT

Inspection 4: Hazard Warning Lamp Blinks When Ignition Switch Is Turned On

EES000Y9

DIAGNOSTIC PROCEDURE

1. 

CHECK GROUND CIRCUIT

●

Disconnect low tire pressure warning control unit connector M143.

●

Check continuity between low tire pressure warning control unit connector M143 terminal 11 (B) and
ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace low tire pressure warning control unit

ground circuit.

2. 

CHECK RELAY

●

Check low tire pressure warning relay. Refer to 

WT-22, "Electrical Components Inspection"

 .

OK or NG

OK

>> Replace low tire pressure warning control unit.

NG

>> Replace low tire pressure warning relay.

Inspection 5: ID Registration Cannot Be Completed

EES000YA

DIAGNOSTIC PROCEDURE

1. 

ID REGISTRATION (ALL)

●

Carry out ID registration of all transmitters.

●

Can ID registration of all transmitters be completed?

Yes or No?

Yes

>> INSPECTION END

No

>> GO TO 

WT-17, "Inspection 1: Transmitter or Low Tire Pressure Warning Control Unit"

 .

Terminals

Continuity

(+)

(–)

Connector

Terminal

(Wire color)

Ground

Yes

M143

11 (B)

WEIA0015E

WT-22

TROUBLE DIAGNOSIS FOR SYMPTOMS

Electrical Components Inspection

EES000YB

LOW TIRE PRESSURE WARNING RELAY

Condition

Continuity

12V direct current supply between termi-
nals 1 and 2

Yes

No current supply

No

SEC202B

REMOVAL AND INSTALLATION

WT-23

C

D

F

G

H

I

J

K

L

M

A

B

WT

REMOVAL AND INSTALLATION

PFP:00000

Transmitter (Pressure Sensor)

EES000YC

REMOVAL

1.

Deflate tire. Unscrew transmitter retaining nut and allow transmitter to fall into tire.

2.

Gently bounce tire so that transmitter falls to bottom of tire.
Place wheel and tire assembly on tire changing machine and
break both tire beads. Ensure that the transmitter remains at the
bottom of the tire while breaking the bead.

3.

Turn tire so that valve hole is at bottom, and gently bounce the
tire to ensure transmitter is near valve hole. Carefully lift tire onto
turntable and position valve hole (and transmitter) 270 degrees
from mounting/dismounting head.

4.

Lubricate tire well, and remove top side of tire. Reach inside the
tire and remove the transmitter.

INSTALLATION

1.

Place first side of tire onto rim.

2.

Mount transmitter on rim and tighten nut.

SEIA0047E

SEIA0048E

SEIA0049E

Transmitter nut 
tightening torque

: 4.1 - 6.8 N·m (0.42 - 0.69 kg-m,
36 - 60 in-lb)

LEIA0028E