Mazda 6 2002 Workshop Manual page 1084

STEP
*3 INSPECT WIRING HARNESS BETWEEN SAS
UNIT AND INSTRUMENT CLUSTER FOR
SHORT TO GROUND
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable.
• Disconnect instrument cluster connector.
• Is there continuity between terminal 1O of
instrument cluster connector and ground?
4 INSPECT INSTRUMENT CLUSTER
• Connect instrument cluster connector.
• Connect instrument cluster connector
terminal 1O to ground, then reconnect
connector.
• Connect negative battery cable.
• Does air bag system warning light illuminate
with ignition switch ON?
5 CONFIRM THAT MALFUNCTION SYMPTOMS
DO NOT RECUR AFTER REPAIR
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Connect all SAS unit connectors.
• Connect driver and passenger-side
pre-tensioner seat belt connectors. (Vehicles
with pre-tensioner seat belt)
• Connect driver and passenger-side curtain
air bag module connectors. (Vehicles with
curtain air bag)
• Connect driver and passenger-side side air
bag module connectors. (Vehicles with side
air bag)
• Connect passenger-side air bag module
connector.
• Connect clock spring connector.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Does air bag system warning light operate
properly?
End Of Sie
NO.2 AIR BAG SYSTEM WARNING LIGHT IS ILLUMINATED ALL THE TIME
2 Air bag system warning light is illuminated all the time.
DETECTION Malfunction in air bag system warning light circuit (open circuit or short to power supply).
CONDITION
• Weak battery
• SAS unit malfunction
• Instrument cluster (print plate) malfunction
• No connection in SAS unit connector
POSSIBLE
• Poor contact in instrument cluster connector (16-pin)
CAUSE
• Open or short to power supply circuit in wiring harness between instrument cluster and SAS unit
• Poor contact at terminals 1T, 1X and/or 1W of SAS unit connector
• Poor contact in wiring harness between terminal 1X of SAS unit connector and ground
• Poor contact in wiring harness between AIR BAG 15 A fuse and terminal 1W of SAS unit
Diagnostic Procedure
• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while
doing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If
there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and
undamaged.
STEP
1 INSPECT BATTERY
• Measure voltage of battery.
• Is voltage more than 9 V?
T–232
TROUBLESHOOTING
INSPECTION
INSPECTION
Yes Replace wiring harness, then go to Step 5.
No Go to net step.
Yes Replace instrument cluster, then go to net step.
(See T–72 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION)
No Go to net step.
Yes Complete troubleshooting, then eplain repairs to customer.
No Recheck malfunction symptoms, then repeat from Step 1 if
malfunction recurs.
Yes Go to net step.
No Battery is weak.
Inspect charge/discharge system, then go to Step 10.
(See G–4 BATTERY
ACTION
A6E818001046W03
ACTION
INSPECTION)