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DTC C1140 (30)

BME040200000W06

DTC | C1140 (30) | ABS (ABS/TCS) HU/CM (pump)
DETECTION CONDITION | Right front and left rear wheels, or left front and right rear wheels lock is detected during ABS operation.
POSSIBLE CAUSE | Stuck ABS pump in ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT ABS/TCS HU/CM (WITH TCS) or ABS HU/CM (WITHOUT TCS) OPERATION • Perform ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) system inspection. (See ABS HU/CM SYSTEM INSPECTION) (See ABS/TCS HU/CM SYSTEM INSPECTION) • Is it okay? | Yes | Go to next step.
No | Replace ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS), 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 for dragging.
• 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 Clearing DTCs Procedure) • 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/TCS HU/CM (with TCS) or ABS HU/CM (without TCS), 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.