No.8 Brake System Warning Light Stays On More Than 4 Seconds With Ignition Switch On - Mazda 6 2002 Workshop Manual

TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
STEP
* INSPECT WIRING HARNESS BETWEEN ABS/
6
TCS HU/CM AND DLC-2 (DATA LINK
CONNECTOR-2) FOR SHORT TO GROUND
Is there continuity between SST connector
terminal X and ground?
• 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.

NO.8 BRAKE SYSTEM WARNING LIGHT STAYS ON MORE THAN 4 SECONDS WITH IGNITION SWITCH ON

End Of Sie
BRAKE system warning light stays on more than 4 seconds with ignition switch on. (Parking brake
8
is released.)
[TROUBLESHOOTING HINTS]
• Malfunction of instrment cluster or ABS/TCS HU/CM
• Short to ground in circuit in parking brake switch and/or brake fluid level sensor
Diagnostic procedure
1 INSPECT BRAKE FLUID LEVEL
Is brake fluid level okay?
* INSPECT WIRING HARNESS BETWEEN ABS/
2
TCS HU/CM AND DLC-2 (DATA LINK
CONNECTOR-2 ) FOR CONTINUITY AND
SHORTS
Inspect the following items using WDS or
equivalent PID/DATA monitor function.
• BRAKE_LAMP(BRAKE system warning
light)
Is error message displayed regarding
communication between ABS/TCS HU/CM and
WDS or equivalent?
3 CHECK FOR DTCs IN ABS/TCS HU/CM
Have DTCs been recorded in memory?
P–114
INSPECTION
Yes Repair wiring harness between ABS/TCS HU/CM and data
link connector.
No Replace ABS/TCS HU/CM (communication circuit
malfunction is ABS/TCS HU/CM).
Yes Go to net step.
No Add brake fluid.
Yes If a communication error message is displayed even after
inspecting according to procedures displayed on WDS or
equivalent.
Go to net step6.
No Go to net step.
Yes Perform inspection using appropriate DTC.
No Go to net step.
ACTION
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