Seat Belts - Automatic Nissan Stanza III

DESCRIPTION/OPERATION

The shoulder belt buckle mainly operates while the ignition is ON. When ignition switch is on and the door is opened, the shoulder buckle moves forward. When the door is closed, the buckle moves rearward. When the ignition switch is off and the door is opened, the shoulder buckle moves forward. When the door is closed, the buckle will remain is this position.

Automatic Seat Belt Quick Test. Scheme 1

TIMER (IGNITION SWITCH EITHER ON OR OFF)

If limit switch does not operate (when accomplishing forward operation, front limit switch cannot be turned OFF or when accomplishing rearward operation, rear limit switch cannot be turned OFF, control unit will continue to supply power to drive motor for 15 seconds and control unit will stop supplying power.

QUICK WARNING (IGNITION SWITCH ON)

If front limit switch is not turned OFF after accomplishing forward operation, control unit will stop supplying power 15 seconds later and warning lamp will flash and chime will operate rapidly for approximately 6 seconds.

REAR LOCK

If quick warning functions twice successively while ignition switch is ON, shoulder belt buckle will move to rear position when door is closed as normal but will remain in rear position even if door is opened. This function is canceled when ignition switch is OFF.

Shoulder Anchors Not At Rear Lock Position; Ignition ON. Scheme 2

Shoulder Anchors Not At Rear Lock Position; Ign. OFF to ON. Scheme 3

Shoulder Belts Are Not Fastened; Ignition Sw. ON. Scheme 4

Driver Side Lap Belt Is Not Fastened; Ignition Sw. OFF to ON. Scheme 5

NORMAL (All Belts Fastened & Shoulder Anchors In Rear Lock Position); Ignition Switch OFF to ON. Scheme 6

DESCRIPTION

Since left and right component parts are basically the same, harness layout and methods for electrical components inspection are shown for one side only.

Although methods for checking component parts on both sides are described in the flow chart, making it easier to troubleshoot, apply checking procedures to either side that have malfunction during trouble diagnosis. For those methods enclosed by double rectangulars, however, component parts on both sides must be checked as problems occurring on either side cannot be easily determined by a symptom.

No Operation. No Warning Indicated & No Buckle Movement

1. Main Power Supply & Ground Circuit Check (Diagnostic Procedure 1)
2. Diagnostic Procedures 1, 3 & 4
3. The following Electrical Components Inspection: Warning Lamp, Warning Chime, LEFT SIDE (Front Limit Switch, Rear Limit Switch, Door Latch Switch, Shoulder Belt Buckles Switch, Motor, Lap Belt Switch), RIGHT SIDE (Front Limit Switch, Rear Limit Switch, Door Latch Switch, Shoulder Belt Buckles Switch, Motor)

Shoulder Belt Buckle On L.H. Or R.H. Side Does Not Move

1. Preliminary Check (Diagnostic Procedure 1)
2. Main Power Supply & Ground Circuit Check (Diagnostic Procedure 2)
3. Diagnostic Procedures 1, 3 & 4
4. The following Electrical Components Inspection: Warning Lamp, Warning Chime, LEFT & RIGHT Side (Front & Rear Limit Switch, Motor)

Shoulder Belt Buckle Moves FORWARD Only

1. Preliminary Check (Diagnostic Procedure 1)
2. Diagnostic Procedures 2 & 4
3. The following Electrical Components Inspection: LEFT & RIGHT Side (Rear Limit & Door Latch Switch)

Shoulder Belt Buckle Moves REARWARD Only

1. Preliminary Check (Diagnostic Procedure 1)
2. Diagnostic Procedures 2 & 3
3. The following Electrical Components Inspection: LEFT & RIGHT Side (Front Limit & Door Latch Switch)

Warning Indication Incorrect Or Does Not Function

1. Preliminary Check (Diagnostic Procedure 2)
2. Diagnostic Procedures 4-8
3. The following Electrical Components Inspection: Warning Lamp & Chime, LEFT SIDE (Rear Limit & Shoulder Belt Buckle Switch, Lap Belt Switch), RIGHT SIDE (Rear Limit & Shoulder Belt Buckle Switch)

Quick Warning Operates

1. Diagnostic Procedure 3
2. The following Electrical Components Inspection: LEFT & RIGHT Side (Front Limit Switch)

Diagnostic Procedure 1 (Preliminary Check - 1 of 2). Scheme 7

Diagnostic Procedure 1 (Preliminary Check - 2 of 2). Scheme 8

MAIN POWER SUPPLY TABLE. Scheme 9

GROUND CIRCUIT

Diagnostic Procedure 2 (Preliminary Check - 1 of 2). Scheme 10

Diagnostic Procedure 2 (Preliminary Check - 2 of 2). Scheme 11

POWER SUPPLY FOR MOTOR DRIVE

GROUND CIRCUIT FOR MOTOR DRIVE

Diagnostic Procedure 1 (1 of 3). Scheme 12

Diagnostic Procedure 1 (2 of 3). Scheme 13

Diagnostic Procedure 1 (3 of 3). Scheme 14

Diagnostic Procedure 2 (1 of 2). Scheme 15

Diagnostic Procedure 2 (2 of 2). Scheme 16

Diagnostic Procedure 3 (1 of 2). Scheme 17

Diagnostic Procedure 3 (2 of 2). Scheme 18

Diagnostic Procedure 4 (1 of 2). Scheme 19

Diagnostic Procedure 4 (2 of 2). Scheme 20

Diagnostic Procedure 5 (1 of 2). Scheme 21

Diagnostic Procedure 5 (2 of 2). Scheme 22

Diagnostic Procedure 6 (1 of 2). Scheme 23

Diagnostic Procedure 6 (2 of 2). Scheme 24

Diagnostic Procedure 7. Scheme 25

Diagnostic Procedure 8. Scheme 26

FRONT LIMIT SWITCH

FRONT LIMIT SWITCH

REAR LIMIT SWITCH

REAR LIMIT SWITCH

SHOULDER BELT BUCKLE SWITCH

SHOULDER BELT BUCKLE SWITCH

DOOR LATCH SWITCH

DOOR LATCH SWITCH (BUILT IN DOOR LOCK ASSEMBLY)

DRIVE MOTOR ASSEMBLY

DRIVE MOTOR ASSEMBLY

LAP BELT BUCKLE SWITCH

LAP BELT BUCKLE SWITCH

WIRING DIAGRAMS

See appropriate WIRING DIAGRAMS article.