Mazda 6 2002 - No.6 both ABS WARNING LIGHT and

TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
P111
P
• 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 Si e
NO.6 BOTH ABS WARNING LIGHT AND BRAKE SYSTEM WARNING LIGHT STAY ON MORE THAN 4
SECONDS WITH IGNITION SWITCH ON
A6E699067650W10
Diagnostic procedure
STEP INSPECTION ACTION
6
Both ABS warning light and BRAKE system warning light stay on more than 4 seconds with ignition
switch on.
[TROUBLESHOOTING HINTS]
• ABS/TCS HU/CM detects ABS proportioning system malfunction.
• ABS/TCS HU/CM detects low voltage in power supply (ABS/TCS CM ingestion terminal Z voltage is below about 9
to 10 V).
• ABS/TCS HU/CM does not operate.
• Malfunction of communication network.
STEP INSPECTION ACTION
1 INSPECT ABS/TCS HU/CM POWER SUPPLY
FUSE
Is ABS/TCS HU/CM ignition power supply fuse
okay?
Yes Go to next step.
Check for a short to ground on blown fuses circuit.
No Repair or replace as necessary.
Install appropriate amperage fuse.
2 INSPECT WIRING HARNESS BETWEEN ABS/
TCS HU/CM AND DLC-2 (DATA LINK
CONNECTOR-2) FOR CONTINUITY AND
SHORTS
Perform DTC inspection.
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 procedure displayed on WDS or
equivalent, go to step 8.
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.