Mazda 6 2002 - Dtc C1140

ON-BOARD DIAGNOSTIC (ABS/TCS)
P55
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Diagnostic procedure
End Of Si e
DTC C1140
A6E697567650W09
Caution
•
••
• When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness connector, the SST (49 G066
001) must be used. (See P29 ABS (ABS/TCS) HU/CM INSPECTION.)
Diagnostic procedure
STEP INSPECTION ACTION
1 CHECK FOR CAN FOR DTCs
• If any of DTC U1900 and/or U2516 has also
been stored?
Yes Follow inspection procedures for CAN system.
See T144 DTC U0073, U1900, U2516
No Go to next step.
2 CHECK FOR PCM FOR DTCs
• Turn ignition key to OFF.
• Connect WDS or equivalent to DLC-2
• Turn ignition key to ON (engine OFF).
• Is DTC for engine control system obtained?
Yes Follow inspection procedures for engine control system.
No Go to next step.
3 VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory.
(See P46 Clearing DTCs Procedures
• Start engine.)
• Is same DTC present?
Yes Replace DSC HU/CM, then go to next step.
No Go to next step.
4 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
DTC C1140 ABS (ABS/TCS) HU/CM (pump)
DETECTION
CONDITION
Right front and left rear wheels, or left front and right rear wheel-lock is detected during ABS (ABS/TCS)
operation.
POSSIBLE
CAUSE
Stuck pump motor in ABS (ABS/TCS) HU/CM
STEP INSPECTION ACTION
1 INSPECT ABS (ABS/TCS) HU/CM
OPERATION
• Perform ABS (ABS/TCS) HU/CM system
inspection.
(See P27 ABS (ABS/TCS) HU/CM
SYSTEM INSPECTION)
• Is it okay?
Yes Go to next step.
No Replace ABS (ABS/TCS) HU/CM, then go to Step 4.
2 INSPECT CONVENTIONAL BRAKE
OPERATION
• Inspect brake fluid level.
• Start engine.
• Perform a road test to verify conventional
vehicle braking performance.
• Is there any concern.
Yes Inspect conventional brake line, then go to Step 4.
No Go to next step.
3 INSPECT REAR BRAKE DRAGGING
• Turn ignition key to OFF.
• Jack-up vehicle and support it with safety
stand.
• Release parking brake.
• Turn rear wheel by hand and inspect for rear
brake drag.
• Is rear brake dragging?
Yes Repair parking brake system, then go to next step.
No Go to next step.
4 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
(See P46 Clearing DTCs Procedures)
• Start engine and drive vehicle at 10 km/h
{6.2 mph} or above at least one minute.
• Gradually slow down vehicle and stop.
• Is same DTC present?
Yes Replace ABS (ABS/TCS) HU/CM, then go to next step.
No Go to next step.
5 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.