Detailed Inspection C Of Vehicle: Notes
Verify the malfunction symptom according to the following table and perform the applicable troubleshooting procedure.
DETAILED INSPECTION C OF VEHICLE (CONVENTIONAL BRAKE SYSTEM) TROUBLESHOOTING REFERENCE
| Primary cause | Secondary cause | Tertiary cause | Related part | Reference/measure | |
|---|---|---|---|---|---|
| Vehicle malfunction | Insufficient braking force on disc plate/brake drum | Decrease in coefficient of friction of disc pads and brake shoes | Heat fade (Phenomenon in which component inside friction material is vaporized by heat and friction coefficient of sliding surfaces decreases) | Disk pads, brake shoes, disk plates, brake drums | (See INSPECTION ITEM 1 .) |
| Ice fade (Phenomenon in which ice film adheres to sliding surfaces and friction coefficient decreases) | Disk pads, brake shoes, disk plates, brake drums | (See INSPECTION ITEM 2 .) | |||
| Water fade (Phenomenon in which water film adheres to sliding surfaces and friction coefficient decreases) | Disk pads, brake shoes, disk plates, brake drums | (See INSPECTION ITEM 3 .) | |||
| Remaining friction material is 0 mm | Disk pads, brake shoes | (See INSPECTION ITEM 4 .) | |||
| Oil adheres to sliding surfaces | Disk pads, brake shoes, disk plates, brake drums | (See INSPECTION ITEM 5 .) | |||
| ABS intervention too long | ABS HU/Control Module, DSC HU/Control Module control malfunction | ABS HU/Control Module, DSC HU/Control Module, ABS wheel speed sensor, ABS sensor rotor | (See INSPECTION ITEM 6 .) | ||
| Accelerating while decelerating | Accelerator pedal and brake pedal are depressed at the same time | Inappropriate pedal operation | Accelerator pedal, brake pedal | (See INSPECTION ITEM 7 .) | |
| Engine speed does not decrease | Accelerator pedal and throttle valve sticking | Accelerator pedal, throttle valve | |||
| Poor pedal return of accelerator pedal | Accelerator pedal, floor covering | (See INSPECTION ITEM 8 .) | |||
| Insufficient tire grip | Insufficient remaining tire grooves Tire air pressure is not appropriate Tire performance | Tire | (See INSPECTION ITEM 9 .) | ||
| Vehicle is normal | Low road traction | Frozen road surface Wet road surface | - | (See INSPECTION ITEM 10 .) | |
| Insufficient braking force on disc plates/brake drums | Poor brake pedal depression force | Inappropriate driving posture/seat position Poor brake pedal depression force | Driver's seat | (See INSPECTION ITEM 11 .) | |
| Excessive weight | - | (See INSPECTION ITEM 12 .) | |||
| Excessive vehicle speed | Initial braking vehicle speed is too fast | Overspeed Initial brake pedal depression is delayed | - | Verification difficult Explain to the customer that there is no malfunction indicated in the vehicle inspection results | |
| Other | - | Verification difficult Explain to the customer that there is no malfunction indicated in the vehicle inspection results | |||