Mazda 6. Manual — part 262
P–104
TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
SYMPTOM TROUBLESHOOTING
A6E699067650W04
• Verify the symptoms, and perform troubleshooting according to the appropriate number.
Vehicles with ABS/TCS
Vehicles with DSC
*1
: DSC system contains traction control function, DSC indicator light goes on and off while DSC operates.
*2
: DSC indicator light goes on and off while DSC operates.
No.
Symptom
1
ABS warning light, BRAKE system warning light, TCS OFF light do not illuminate with ignition switch on.
2
Neither ABS warning light nor BRAKE system warning light illuminate with ignition switch on.
3
ABS warning light does not illuminate with ignition switch on.
4
BRAKE system warning light does not illuminate with ginning switch on.
5
TCS OFF light and TCS indicator light do not illuminate with ignition switch on.
6
Both ABS warning light and BRAKE system warning light stay on more than 4 seconds with ignition with on.
7
ABS warning light stays on more than 4 seconds with ingestion switch on.
8
BRAKE system warning light stays on more than 4 seconds with ignition switch on. (Parking brake is released.)
9
TCS OFF light stays on more than 4 seconds with ignition switch on.
10
TCS does not work correctly.
11
There is a malfunction in the system even through ABS warning light, BRAKE system warning light, TCS OFF
light,TCS indicator light do not illuminate.
No.
Symptom
1
Any of the following lights do not illuminate with ignition switch on.
• ABS warning light
• BRAKE system warning light
• DSC indicator light
• DSC OFF light
2
Any of the following lights stay on:
• ABS warning light.
• BRAKE system warning light
• DSC indicator light
• DSC OFF light
3
There is a malfunction in the system even though ABS warning light, BRAKE system warning light, DSC indicator light
and DSC OFF light do not illuminate.
4
ABS or TCS
*1
operates frequently.
TCS does not work correctly.
5
DSC
*2
operates frequently.
DSC does not work correctly.
6
DSC indicator light flashes (when neither the TCS nor the DSC are operating).
TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
P–105
P
Vehicle with ABS/TCS
A6E6980W002
P–106
TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
Vehicle with DSC
End Of Sie
A6E6980W100
TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
P–107
P
NO.1 ABS WARNING LIGHT, BRAKE SYSTEM WARNING LIGHT, TCS OFF LIGHT DO NOT ILLUMINATE
WITH IGNITION SWITCH ON
A6E699067650W05
Vehicle with ABS/TCS
• 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 harnesses are connected correctly
and undamaged.
End Of Sie
1
ABS warning light, BRAKE system warning light, TCS OFF light do not illuminate with ignition switch
on.
[TROUBLESHOOTING HINTS]
• Malfunction of instrument cluster or ABS/TCS HU/CM
• Improper configuration (instrument cluster)
STEP
INSPECTION
ACTION
1
VERIFY WHETHER MALFUNCTION IS IN
WARNING LIGHTS AND INDICATOR LIGHTS’
COMMON POWER SUPPLY, OR IN OTHER
WARNING LIGHTS AND INDICATOR LIGHTS
• Do other warning and indicator lights
illuminate when IG switch is turned ON?
Yes
Replace instrument cluster (open circuit in instrument
cluster).
No
Go to next step.
2
INSPECT INSTRUMENT CLUSTER POWER
SUPPLY FUSE
• Is instrument cluster ignition power supply
fuse okay?
Yes
Go to next step.
No
Check for a short to ground on blown fuse’s circuit.
Repair or replace as necessary.
Install appropriate amperage fuse.
*
3
VERIFY WHETHER MALFUNCTION IS IN
WIRING HARNESS (BETWEEN INSTRUMENT
CLUSTER POWER SUPPLY AND
INSTRUMENT CLUSTER FOR CONTINUITY)
OR INSTRUMENT CLUSTER
• Turn ignition switch ON.
• Measure voltage at instrument cluster
connector (24-pin ) terminal 2V.
• Is voltage approximately 12V?
Yes
Replace instrument cluster (open circuit in instrument
cluster).
No
Check for open circuit between instrment cluster and
ground.
Repair or replace as neccessary.
4
COMFIRM DTC U1900 USING WDS OR
EQUIVALENT
• Retrieve DTC from PCM, ABS/TCS and
instrument cluster.
• Is DTC U1900 retrieved?
Yes
Go to next step.
No
Inspect instrment cluster. If OK, then go to step6.
5
COMFIRM THE FOLLOWING PIDs USING
WDS OR EQUIVALENT:
• ABS_MSG
• PCM_MSG
• Is “not present” massage displayed on WDS
or equivalent?
Yes
Replace instrument cluster (open circuit in instrument
cluster).
No
Network communication, for related system is malfunction.
Repair or replace as neccessary.
6
COMFIRM DTC B2477 FOR INSTRUMENT
CLUSTER USING WDS OR EQUIVALENT
• Is DTC B2477 retrieved?
Yes
Re
-configure the
instrument cluster.
No
Replace ABS/TCS HU/CM.
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