General Diagnostic Table: Inspection

Symptoms		Main probable cause	Other probable cause
Poor brake performance	Long braking/stop ping distance	VSC (VDC) Control Module & H/U Brake pad Aeration to brake line Tire specifications, tire wear and air pressures Incorrect wiring or piping connections	Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Master cylinder Brake caliper Disc rotor Brake pipe Brake booster
	Wheel lock	VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Incorrect wiring or piping connections	Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Brake caliper Brake pipe
	Brake drag	VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Master cylinder Brake caliper Parking brake Axle and wheels Brake pedal play	Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Brake pad Brake pipe
	Long brake pedal stroke	Aeration to brake line Brake pedal play	VSC (VDC) Control Module & H/U Master cylinder Brake caliper Brake pad Brake pipe Brake booster
	Vehicle vertical pitching	VSC (VDC) Control Module & H/U Road surface (uneven) Suspension play or fatigue (reduced damping) Incorrect wiring or piping connections	Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U.
Poor brake performance	Unstable or uneven braking	VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Brake caliper Brake pad Road surface (uneven) Tire specifications, tire wear and air pressures Incorrect wiring or piping connections	Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Master cylinder Disc rotor Brake pipe Axle and wheels Road with crowns or banks Suspension play or fatigue (reduced damping)
Vibration or noise When braking suddenly When accelerating rapidly While driving on a slippery road	Excessive brake pedal vibration	Road surface (uneven) Incorrect wiring or piping connections	VSC (VDC) Control Module & H/U Brake booster Suspension play or fatigue (reduced damping)
	Noise from VSC (VDC) Control Module & H/U	VSC (VDC) Control Module & H/U (mount bushing) Defective ABS wheel speed sensor or sensor gap Brake pipe	VSC (VDC) Control Module & H/U Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U.
	Noise from the front side of vehicle	VSC (VDC) Control Module & H/U (mount bushing) Defective ABS wheel speed sensor or sensor gap Master cylinder Brake caliper Brake pad Disc rotor Brake pipe Brake booster Suspension play or fatigue (reduced damping)	Axle and wheels Tire specifications, tire wear and air pressures
	Noise from the rear side of vehicle	Defective ABS wheel speed sensor or sensor gap Brake caliper Brake pad Disc rotor Parking brake Brake pipe Suspension play or fatigue (reduced damping)	Axle and wheels Tire specifications, tire wear and air pressures
Engine does not accelerate or goes into a stall when accelerating suddenly or driving on a slippery surface.		VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Master cylinder Brake caliper Parking brake Incorrect wiring or piping	Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Brake pad Brake pipe
Poor change-direction-operation stability of TCS	Deviation to right or left direction	VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Brake caliper Brake pad Wheel alignment Road surface (uneven) Road with crowns or banks Tire specifications, tire wear and air pressures Incorrect wiring or piping connections	Disc rotor Brake pipe Axle and wheels Suspension play or fatigue (reduced damping)
Poor change-direction-operation stability of TCS	Vehicle spin	VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Brake pad Tire specifications, tire wear and air pressures Incorrect wiring or piping connections	Brake caliper Brake pipe
Steering wheel drag while driving		VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Incorrect wiring or piping connections Power steering system	Brake caliper Brake pad Disc rotor Wheel alignment Road surface (uneven) Road with crowns or banks Suspension play or fatigue (reduced damping) Tire specifications, tire wear and air pressures
VSC (VDC) operates while driving normally.		VSC (VDC) Control Module & H/U Defective ABS wheel speed sensor or sensor gap Defective steering angle sensor or improper neutral position Defective yaw rate & G sensor or improper installation of VSC (VDC) Control Module & H/U. Wheel alignment Road surface (uneven) Road with crowns or banks Suspension play or fatigue (reduced damping) Tire specifications, tire wear and air pressures Incorrect wiring or piping connections Power steering system
VSC (VDC) OFF indicator light does not illuminate when the VSC (VDC) OFF switch is operated.		Harness Combination meter Defective VSC (VDC) OFF switch