Mazda 626 Station Wagon, Руководство по ремонту

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TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING INDEX
• Use the chart below to verify the symptoms of the trouble in order to diagnose the appropriate area.
No. TROUBLESHOOTING ITEM DESCRIPTION PAGE
1
Air bag system warning light does
not illuminate.
Malfunction in air bag system
warning circuit (open circuit or short
to power supply).
T-104 No. 1 AIR BAG SYSTEM
WARNING LIGHT DOES NOT
ILLUMINATE.
2
Air bag system warning light is
illuminated all the time. Malfunction in air bag system
warning circuit (short to ground).
T-106 No. 2 AIR BAG SYSTEM
WARNING LIGHT IS ILLUMINATED
ALL THE TIME.
3
Passenger-side air bag cut-off
indicator light does not dim.
Malfunction in TNS relay circuit
(open circuit).
(Child restraint seat’s built in
resonator is attached to side
passenger’s seat.)
T-108 No. 3 PASSENGER-SIDE
AIR BAG CUT-OFF INDICATOR
LIGHT DOES NOT DIM.
4
Passenger-side air bag cut-off
indicator light is illuminated all the
time.
Malfunction in TNS relay circuit
(short to B+).
(Child restraint seat’s built in
resonator is attached to side
passenger’s seat.)
T-110 No. 4 PASSENGER-SIDE
AIR BAG CUT-OFF INDICATOR
LIGHT IS ILLUMINATED ALL THE
TIME.
No. 1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE.
1 Air bag system warning light does not illuminate.
DETECTION
CONDITION
Malfunction in air bag system warning circuit (open circuit or short to power supply)
POSSIBLE
CAUSE
• SAS unit malfunction
• Instrument cluster (print plate) malfunction
• Air bag system warning light bulb malfunction
• Poor contact in instrument cluster connector
(1 8-pin)
• Open or short circuit in wiring harness between instrument cluster and SAS unit
• Simultaneous poor contact at terminals 2T and 2Q of SAS unit connector.
• Simultaneous poor contact at terminals 2E and 2H of SAS unit connector.
• Poor contacts in wiring harness between terminal 2T of SAS unit connector and ground, and
between terminal 2Q and ground at the same time.
• Poor contacts or short circuits in wiring harness between METER 7.5 A fuse and SAS unit, and
between ENGINE 10 A fuse and SAS unit at the same time.
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 malfunctions. If
there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and
undamaged.
STEP INSPECTION ACTION
1 CHECK TO SEE WHETHER MALFANCTION
IS IN AIR BAG SYSTEM WARNING LIGHT
CIRCUIT OR OTHER WARNING AND
INDICATOR LIGHT CIRCUIT IN
INSTRUMENT CLUSTER
• Turn ignition switch to ON position.
• Do other warning and indicator lights
illuminate?
Yes Turn ignition switch to LOCK position, then go to next
step.
No Inspect instrument cluster power supply system and
ground system, then go to Step 6.
T -104