Mazda 626 Station Wagon, Workshop Manual

Page: 496 / 577

ON-BOARD DIAGNOSTIC
STEP INSPECTION
ACTION
3 INSPECT WIRING HARNESS BETWEEN
DRIVER-SIDE PRE-TENSIONER SEAT BELT
ANS SAS UNIT
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Remove clock spring.
(See Section T)
• Remove glove compartment. (Vehicle with
passenger-side air bag)
• Disconnect passenger-side air bag module
connector. (Vehicle with passenger-side air
bag)
• Disconnect driver- and passenger-side side
air bag module connectors. (Vehicle with
side air bag)
• Remove passenger-side B-pillar lower trim.
• Disconnect passenger-side pre-tensioner
seat belt connector.
• Remove side walls.
• Disconnect all SAS unit connectors.
• Inspect wiring harness between terminal
3A of SAS unit connector and terminal A of
driver-side pre-tensioner seat belt
connector, and between terminal 3C of
SAS unit connector and terminal B of
driver-side pre-tensioner seat belt
connector for following.
— Short to ground
— Short to power supply
— Open circuit
• Are wiring harnesses okay?
Yes Present malfunction diagnosis:
• Replace SAS unit.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Replace passenger-side pre-tensioner seat belt.
(See Section S)
No Replace wiring harness.
DTC 12
DTC12 Passenger-side pre-tensioner seat belt system
DETECTION
CONDITION
Warning
• Detection conditions are for understanding DTC outline before performing inspection.
Performing inspection with only detection conditions may cause injury due to operating
error or damage the system. When performing inspection, always follow inspection
procedure.
• Resistance detected between terminals 31 and 3K of SAS unit is other than 1.83—2.81 £1
• Short circuit in wiring harness related terminal 31 or 3K of SAS unit
POSSIBLE
CAUSE
• Passenger-side pre-tensioner seat belt malfunction
• Malfunction of connectors between passenger-side pre-tensioner seat belt and SAS unit
• Open or short circuit in wiring harness between passenger-side pre-tensioner seat belt and SAS unit
• SAS unit malfunction
PA S SE N G ER -SID EP R E-TE N SIO N E R
SEAT BELT CO N N E C TO R
SAS U N IT C O N NECTO R
n
' X
I
3K 31
3G 3E 3C
3A
3L 3J
3H | 3 F [ 3D
3B
H A RNE SS SIDE C O N N E C TO R
(VIEW FRO M TERM INA L SIDE)
HARN ESS SIDE C O N NECTO R
(VIEW FROM HAR N E SS SIDE)
T -7 4