2005 NISSAN X-TRAIL warning

SB-10
SEAT BELT WARNING SYSTEM

THWB0003E

SEAT BELT WARNING SYSTEM
SB-11
C
D
E
F
G
I
J
K
L
MA
B
SB

THWB0004E

SB-12
SEAT BELT WARNING SYSTEM

Wiring Diagram —S/WARN—/For RHD modelsEHS000H1
THWB0005E

SEAT BELT WARNING SYSTEM
SB-13
C
D
E
F
G
I
J
K
L
MA
B
SB

THWB0006E

SB-14
SEAT BELT WARNING SYSTEM

THWB0007E

SEAT BELT WARNING SYSTEM
SB-15
C
D
E
F
G
I
J
K
L
MA
B
SB

Terminal and Reference Value for Time Control Unit EHS000H3
NOTE:
*: When seat pressure switch is ON.
TERMINALWIRE
COLORITEM CONDITION VOLTAGE (V)
1 L Battery power supply — Battery voltage
8RSeat belt warning lamp
(driver side) signalSeat belt warning lamp (driver
side) is illuminated.0
Seat belt warning lamp (driver
side) is not illuminated.Battery voltage
15 W/GSeat belt warning lamp
(passenger side) signalSeat belt warning lamp (passen-
ger side) is illuminated.0
Seat belt warning lamp (passen-
ger side) is not illuminated.Battery voltage
16 B/R Ground Turn ignition switch ON 0
17 GIgnition switch ON or
START signalTurn ignition switch ON or
STARTBattery voltage
21 BR/WSeat belt buckle switch
(driver side) signalSeat belt buckle switch (driver
side) is unfastened.0
Seat belt buckle switch (driver
side) is fastened.Battery voltage
22 G/ORSeat belt buckle switch
(passenger side) signalSeat belt buckle switch (passen-
ger side) is unfastened.*0
Seat belt buckle switch (passen-
ger side) is fastened.*Battery voltage
36LB
(A/T models)
L/Y
(M/T models)Vehicle speed signal When the vehicle speed is
approx. 40km (25MPH).
ELF1080D

SB-16
SEAT BELT WARNING SYSTEM

Work FlowEHS001FQ
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to SB-6, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SB-16,
"Trouble Diagnosis Chart by Symptom" .
4. Does power seat system operate normally? If Yes, GO TO 5, If No, GO TO 3.
5. INSPECTION END.
Trouble Diagnosis Chart by SymptomEHS000GS
NOTE:
Always check the “Work Flow” before troubleshooting. Refer to SB-16, "
Work Flow" .
Time Control Unit Power Supply and Ground Circuit CheckEHS001FV
1. CHECK FUSE
Check the following.

Check 10A fuse [No. 5, located in the fuse block (J/B)].

Check 10A fuse [No. 28, located in the fuse block (J/B)].
OK or NG
OK >> GO TO 2.
NG >> Replace fuse.
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect time control unit connector.
3. Check voltage between time control unit and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace time control unit power supply circuit.
Symptom Diagnoses/Service procedure Reference page
Seat belt warning system do not operate. Time control unit power supply and ground checkSB-16
Seat belt warning lamp (driver side) do not
illuminated.1. Seat belt warning lamp check (driver side)SB-172. Seat belt buckle switch checkSB-20
3. If the above system are normal, replace time control unit. —
Seat belt warning lamp (passenger side) do
not illuminated.1. Seat belt warning lamp check (passenger side)SB-19
2. Seat belt buckle switch and seat pressure switch checkSB-22
3. If the above system are normal, replace time control unit. —
Seat belt warning lamp does not illuminated
(both driver side and passenger side) Seat belt warning lamp power supply checkSB-17
Seat belt chime does not activate.(Seat belt
warning lamp is operated) Vehicle speed signal checkSB-24
ConnectorTerminals
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M30 1 (L)
GroundIgnition switch OFF Battery voltage
M31 17 (G) Ignition switch ON Battery voltage
PHIA0649E

SEAT BELT WARNING SYSTEM
SB-17
C
D
E
F
G
I
J
K
L
MA
B
SB

3. CHECK GROUND CIRCUIT
Check continuity between time control unit harness connector M30
terminal 16 (B/R) and ground.
OK or NG
OK >> Replace time control unit.
NG >> Replace harness or connector.
Seat Belt Warning Lamp Power Supply CheckEHS000GT
1. CHECK FUSE
Check 10A fuse [No.11, located in fuse block (J/B)].
Refer to PG-2, "
POWER SUPPLY ROUTING" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
2, "POWER SUPPLY ROUTING" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect combination meter connector.
2. Turn ignition switch “ON”.
3. Check voltage between combination meter connector M44 ter-
minal 2 (Y/G) and ground.
OK or NG
OK >> Replace combination meter.
NG >> Repair or replace harness between combination meter
and fuse block (J/B).
Seat Belt Warning Lamp Check (Driver side)EHS001DO
1. CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Connect battery power supply to combination meter connector
M44 terminals 2 and 10 (LHD models) 37 (RHD models), and
check the illumination.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.16 (B/R) - Ground : Continuity should exist.
PIIA8641E
2 (Y/G) – Ground : Battery voltage.
PHIA0641E
LHD models
2 (BAT+) – 10 (BAT-)
RHD models
2 (BAT+) – 37 (BAT-)
PHIA0642E