Mazda 2002 6 - No.8 Brake System Warning Light Stays on more than 4 Seconds with Ignition Switch on

P–114
TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
• 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
NO.8 BRAKE SYSTEM WARNING LIGHT STAYS ON MORE THAN 4 SECONDS WITH IGNITION SWITCH ON
A6E699067650W12
Diagnostic procedure
*
6
INSPECT WIRING HARNESS BETWEEN ABS/
TCS HU/CM AND DLC-2 (DATA LINK
CONNECTOR-2) FOR SHORT TO GROUND
Is there continuity between SST connector
terminal X and ground?
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).
STEP INSPECTION ACTION
8
BRAKE system warning light stays on more than 4 seconds with ignition switch on. (Parking brake
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
STEP INSPECTION ACTION
1 INSPECT BRAKE FLUID LEVEL
Is brake fluid level okay?
Yes Go to next step.
No Add brake fluid.
*
2
INSPECT WIRING HARNESS BETWEEN ABS/
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?
Yes If a communication error message is displayed even after
inspecting according to procedures displayed on WDS or
equivalent.
Go to next step6.
No Go to next step.
3 CHECK FOR DTCs IN ABS/TCS HU/CM
Have DTCs been recorded in memory?
Yes Perform inspection using appropriate DTC.
No Go to next step.