Mazda 626 Station Wagon, Workshop Manual

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ON-BOARD DIAGNOSTIC
STEP INSPECTION
ACTION
2 INSPECT METER 7.5 A FUSE
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable.
• Remove METER 7.5 A fuse.
• Is fuse okay?
Yes Reinstall METER 7.5 A fuse, then go to next step.
No Replace METER 7.5 A fuse.
3 INSPECT AIR BAG SYSTEM WARNING
UGHT BULB
• Remove instrument cluster.
• Remove air bag system warning light bulb.
• Is bulb okay?
Yes Reinstall air bag system warning light bulb, then go to
next step.
No Replace air bag system warning light bulb.
4 INSPECT INSTRUMENT CLUSTER
• Is there continuity between instrument
cluster terminals 1J and 1R?
Yes Go to next step.
No Replace instrument cluster.
5 INSPECT FOR CONTINUITY BETWEEN
METER 7.5 A FUSE AND INSTRUMENT
CLUSTER
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Measure voltage at instrument cluster con­
nector terminal 1J.
• Is voltage more than 9 V?
Yes Go to next step.
No Repair wiring harness.
6 INSPECT WIRING HARNESS BETWEEN
INSTRUMENT CLUSTER 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
• 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.
• Disconnect passenger-side air bag module
connector.
• 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.
• Inspect wiring harness between instrument
cluster connector terminal 1R and SAS unit
connector terminal 2W for following.
— Short to ground
— Short to power supply
— Open circuit
• Is wiring harness okay?
Yes Go to next step.
No
Replace wiring harness.
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