2003 NISSAN X-TRAIL Service Repair Manual

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Page 2993 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SEAT BELT WARNING SYSTEM
SB-13
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THWB0006E

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NISSAN X-TRAIL 2003 Service Repair Manual SB-14
SEAT BELT WARNING SYSTEM

THWB0007E

Page 2995 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SEAT BELT WARNING SYSTEM
SB-15
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Terminal and Reference Value for Time Control Unit EHS000H3
NOTE:
*: When seat pressure switch is ON.
TERMINALWIRE
COLORITEM CONDITION VOLTA

Page 2996 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SB-16
SEAT BELT WARNING SYSTEM

Work FlowEHS001FQ
1. Check the symptom and customers requests.
2. Understand the outline of system. Refer to SB-6, "
System Description" .
3. According to the trouble

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

Page 2997 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SEAT BELT WARNING SYSTEM
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3. CHECK GROUND CIRCUIT
Check continuity between time control unit harness connector M30
terminal 16 (B/R) and ground.
OK or NG
OK >> Replace

Page 2998 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SB-18
SEAT BELT WARNING SYSTEM

2. CHECK SEAT BELT WARNING LAMP CIRCUIT HARNESS CONTINUITY
1. Disconnect time control unit connector.
2. Check the following.
LHD models
–Check continuity between c

Page 2999 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SEAT BELT WARNING SYSTEM
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Seat belt Warning Lamp Check (Passenger Side)EHS000GU
1. CHECK SEAT BELT WARNING LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect comb

Page 3000 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual SB-20
SEAT BELT WARNING SYSTEM

Seat Belt Buckle Switch CheckEHS000GW
1. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) INPUT SIGNAL
1. Turn ignition switch “ON”.
2. Check voltage between time contr

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