Auto Seat Belt Control Module Modification/Diagnosis (TS 2-07 04221(R))

WARNING: This page is about the Swift GA, 2D Hatchback, which is a different variant/trim than selected.

Publication date: 1970-01-01
Reference number: TS 2-07 04221(R)

AUTO SEAT BELT CONTROL MODULE MODIFICATION/DIAGNOSIS

TECHNICAL SERVICE BULLETIN

Reference Number(s): TS 2-07 04221(R), Date of Issue:

MODIFICATION OF AUTOMATIC (PASSIVE) SEAT BELT CONTROL MODULE AND DIAGNOSTICS

Model(s): 1990-91 Suzuki Swift

Bulletin No.: TS 2-07 04221(R)

Group: Body/Frame/Paint

SERVICE INFORMATION

The early passive main controller (P/N 38890-60B00) has been superseded to a late part (P/N 38890 60B01). Only the late main controller will be available through the parts department. The early main controller was used in conjunction with a SUB-CONTROLLER which is to be disconnected and discarded when replacing with the late part number. If the sub-controller is determined to be faulty, and the main controller is determined to be good, the sub-controller will still be available through the parts department. Both the early and late controllers have a 20 pin connector, while the sub-controller has a 9 pin connector.

NOTE: The diagnostics in this bulletin will apply to an 1990 and 991 systems. The only difference will be whether he system uses both an early main and sub controller or a late main controller.

REVISED DIAGRAMS AND DIAGNOSTICS CHANGES

Beginning with November 1989 production, the sub-controller and it's wiring are deleted from Swift vehicles due to the modification of the main controller (P/N 38890-60B00) changed to P/N 38890-60B01). These changes are shown in detail in Fig 1 , Fig 2 , and Fig 3 .

Fig 1: Diagram Showing Omission of Sub-Controller

Fig 2: Controller With Sub-Controller Schematic Diagram

Fig 3: Single Controller Schematic Diagram

TEST CONDITIONS

CIRCUIT

TERMINAL

STANDARD VOLTAGE

CONDITION

IGNITION KEY "ON"

POWER

10-14V

Ignition switch 'off'

10-14V

Ignition switch 'on'

YES

SEAT BELT RETRACTOR SOLENOID POWER

10-14V

---

DRIVER SEAT BELT RETRACTOR SOLENOID

10- 14V

Driver door closed⁽³⁾

0-1.5V

Driver door open

PASSENGER SEAT BELT RETRACTOR SOLENOID

10-14V

Passenger door closed⁽³⁾

0-1.5V

Passenger door open

DRIVER DOOR SWITCH

⁽²⁾ 14

4-6V

Driver door closed, domelight off & ign. key out

Driver door open

PASSENGER DOOR SWITCH

⁽²⁾ 16

4-6V

Passenger door closed, dome light off & ign. key out

Passenger door open

DRIVER DOOR SWITCH

4-6V

Driver door closed

⁽¹⁾ 5-14V

Driver door open

PASSENGER DOOR LATCH SWITCH

4-6V

Passenger door closed

⁽¹⁾ 5-14V

Passenger door open

DRIVER SEAT BELT SWITCH

10-14V

Driver belt buckled

YES

Driver belt unbuckled

YES

PASSENGER SEAT BELT SWITCH

10-14V

Passenger belt buckled

YES

Passenger belt unbuckled

YES

DRIVER BELT RETRACTOR CANCEL SENSOR SWITCH

Driver door closed

YES

4-6V

Driver door open

YES

⁽¹⁾ 10-14V

PASSENGER BELT RETRACTOR CANCEL SENSOR SWITCH

Passenger door closed

YES

4-6V

Passenger door open

YES

⁽¹⁾ 10-14V

DRIVER BELT REMINDER LIGHT

10-14V

Driver belt buckled and door closed

YES

0-1.5V

Driver belt unbuckled or door open

YES

PASSENGER BELT REMINDER LIGHT

10-14V

Passenger belt buckled and door closed

YES

0-1.5V

Passenger belt unbuckled or door open

YES

DOOR WARNING LIGHT

10-14V

Both driver and passenge doors closed

YES

Reflected Driver or passenger Deflection door opened

YES

WARNING LIGHT CHECK SWITCH

10-14V

Both driver and Passenge doors closed

YES

Ignition switch to START

YES

⁽¹⁾	- Voltage reading with late Main Controller (P/N 38890 - 60BO1)

⁽²⁾	- Not tested when using late Main Controller

⁽³⁾	-Voltage reading after 2 seconds