Mazda 626 Station Wagon, Workshop Manual

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ON-BOARD DIAGNOSTIC
D ia g n o s tic p ro c e d u re
STEP
INSPECTION ACTION
1 INSPECT BATTERY
Yes Go to next step.
• Measure voltage of battery.
• Is voltage
more than 9 V?
No Battery is weak.
Inspect charge/discharge system.
(See Section G)
2
INSPECT WIRING HARNESS BETWEEN
BATTERY AND FUSE BLOCK
• Remove driver-side front scuff plate.
• Remove driver-side front side trim.
• Remove fuse block without disconnecting
connectors.
• Turn ignition switch to ON position.
• Measure voltage at terminals D (JB-01)
and F (JB-02) of fuse block connectors.
• Is voltage of at least either terminal more
than 9 V?
Yes Go to next step.
No Repair wiring harnesses.
3 INSPECT WIRING HARNESS BETWEEN
FUSE BLOCK AND SAS UNIT
Warning
• Handling air bag system components
Improperly can accidentally deploy
air bag modules and pre-tensioner
seat belts, which may seriously injure
you. Read AIR BAG SYSTEM
SERVICE WARNINGS before handling
air bag system components. See
T-56 SERVICE WARNINGS
Yes Present malfunction diagnosis:
•
Replace SAS unit.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Troubleshooting completed.
• 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. (Vehicles with
side air bag)
• Remove B-pillar lower trims.
• Disconnect driver and passenger-side pre-
tensioner seat belt connectors.
• Remove side walls.
• Disconnect all SAS unit connectors.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Measure voltage at SAS unit connector
terminals 2E and 2H.
• Is voltage of at least either terminal more
than 9 V?
No Replace wiring harnesses.
T -6 7