Seat Belt Control Module And Diagnostics - Modification
91suzuki02
TSB No. TS 2-07 04221 (R)
Section Title: Body Electrical
Division: Automotive
Category: Technical
SUBJECT: MODIFICATION OF AUTOMATIC (PASSIVE) SEAT BELT CONTROL MODULE AND DIAGNOSTICS
MODEL: SWIFT
YEAR: 1990 AND 1991
CONDITION: PART CHANGES AND INCORRECT INFORMATION IN DIAGNOSTIC SECRIONS OF SERVICE MANUALS
CAUSE: UPDATE OF SYSTEMS
CORRECTION: NOTE PART NUMBER CHANGES AND UPDATE SERVICE MANUALS
PARTS CHANGE
The early passive main controller (P/N 38890-60B00) has been superceded to a late part (P/N 38890-60B01).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 conjuncdon 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 eartly 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 connnector, while the sub-controller has a 9 pin connector.
NOTE:
The diagnostics in this bulletin will apply to all 1990 and 1991 systems. The only difference will be whether the system uses both an early main and sub controller or a late main controller. Use the applicable service manual along with this bulletin to diagnose and repair these systems!
SERVICE MANUAL 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) however, the service manuals show the wiring and parts for the sub-controller. Please make the appropriate changes to your service manuals (in the Body Section) to reflect these changes. These changes are shown in detail on this and the following pages.
STANDARD IGNITION
CIRCUIT TERMINAL VOLTAGE CONDITION KEY "ON"
9 10-14V NO
POWER 0V Ignition switch "off" NO
20
10-14V Ignition switch "on" YES
SEAT BELT RETRACTOR 19 NO
SOLENOID POWER 10-14V
DRIVER SEAT BELT 10-14V Driver door closed # NO
RETRACTOR SOLENOID 2
0-1.5V Driver door open NO
PASSENGER SEAT BELT 10-14V Passenger door closed # NO
RETRACTOR SOLENOID 1
0-1.5V Passenger door open NO
4-6V Driver door closed, dome NO
DRIVER DOOR SWITCH light off & ign. key out
**14
0V Driver door open NO
4-6V Passenger door closed,dome NO
PASSENGER DOOR light off & ign. key out
SWITCH **16
0V Passenger door open NO
4-6V Driver door closed NO
DRIVER DOOR LATCH *5-14V
SWITCH 13
0V Driver door open NO
4-6V Passenger door closed NO
PASSENGER DOOR *5-14V
LATCH SWITCH 12
0V Passenger door open NO
DRIVER SEAT BELT 10-14V Driver belt buckled YES
SWITCH 3
0V Driver belt unbuckled YES
PASSENGER SEAT BELT 10-14V Passenger belt buckled YES
SWITCH 4
0V Passenger belt unbuckled YES
STANDARD IGNITION
CIRCUIT TERMINAL VOLTAGE CONDITION KEY " ON "
DRIVER BELT 0V Driver door closed # YES
RETRACTOR CANCEL 11
SENSOR SWITCH 4-6V Driver door open YES
*10-14V
PASSENGER BELT 0V Passenger door closed # YES
RETRACTOR CANCEL 5
SENSOR SWITCH 4-6V Passenger door open YES
*10-14V
DRIVER BELT 10-14V Driver belt buckled YES
REMINDER LIGHT 6 and door closed
0-1.5V Driver belt unbuckled YES
or door open
10-14V Passenger belt buckled YES
PASSENGER BELT and door closed
REMINDER LIGHT 7
0-1.5V Passenger belt unbuckled YES
or door open
10-14V Both driver and passenger YES
DOOR WARNING doors closed
LIGHT 17
Repeated Driver or passenger door YES
Deflection opened
WARNING LIGHT 10-14V Both driver and Passenger YES
CHECK SWITCH 8 doors closed
0V Ignition switch to START YES
* VOLTAGE READING WITH LATE MAIN CONTROLLER (P/N 38890-60B01)
** NOT TESTED WHEN USING LATE MAIN CONTROLLER
# VOLTAGE READING AFTER 2 SECONDS
USE THIS CHART IN CONJUNCTION WffH TRE APPROPRIATE SERVICE MANUAL!
THE MANUALS WILL CONTAIN SPECEFICS WITH REGARD TO PRECAUTIONS, COMPONENT LOCATIONS AND TERMINAL IDENFICATION.