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Mechanical Components.pdf - Ken Gilbert

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4-4 [T11A0] DIAGNOSTICS<br />

11. General Diagnostic Table<br />

11. General Diagnostic Table<br />

A: SYMPTOMS AND PROBABLE CAUSES<br />

Symptom Probable faulty units/parts<br />

ABSCM&H/U (solenoid valve)<br />

ABS sensor<br />

Brake (caliper & piston, pads)<br />

Vehicle pulls to either side. Wheel alignment<br />

Tire specifications, tire wear and air pressures<br />

Vehicle instability during braking<br />

Incorrect wiring or piping connections<br />

Road surface (uneven, camber)<br />

ABSCM&H/U (solenoid valve)<br />

ABS sensor<br />

Vehicle spins.<br />

Brake (pads)<br />

Tire specifications, tire wear and air pressures<br />

Incorrect wiring or piping connections<br />

ABSCM&H/U (solenoid valve)<br />

Long braking/stopping distance<br />

Brake (pads)<br />

Air in brake line<br />

Tire specifications, tire wear and air pressures<br />

Incorrect wiring or piping connections<br />

ABSCM&H/U (solenoid valve, motor)<br />

Wheel locks.<br />

ABS sensor<br />

Incorrect wiring or piping connections<br />

ABSCM&H/U (solenoid valve)<br />

ABS sensor<br />

Master cylinder<br />

Brake dragging<br />

Brake (caliper & piston)<br />

Poor braking<br />

Parking brake<br />

Axle & wheels<br />

Brake pedal play<br />

Long brake pedal stroke<br />

Air in brake line<br />

Brake pedal play<br />

Suspension play or fatigue (reduced damping)<br />

Vehicle pitching<br />

Incorrect wiring or piping connections<br />

Road surface (uneven)<br />

ABSCM&H/U (solenoid valve)<br />

ABS sensor<br />

Unstable or uneven braking<br />

Brake (caliper & piston, pads)<br />

Tire specifications, tire wear and air pressures<br />

Incorrect wiring or piping connections<br />

Road surface (uneven)<br />

Excessive pedal vibration<br />

Incorrect wiring or piping connections<br />

Road surface (uneven)<br />

ABSCM&H/U (mount bushing)<br />

Noise from ABSCM&H/U ABS sensor<br />

Brake piping<br />

ABSCM&H/U (mount bushing)<br />

ABS sensor<br />

Vibration and/or noise (while driving<br />

on slippery roads)<br />

Noise from front of vehicle<br />

Master cylinder<br />

Brake (caliper & piston, pads, rotor)<br />

Brake piping<br />

Brake booster & check valve<br />

Suspension play or fatigue<br />

ABS sensor<br />

Brake (caliper & piston, pads, rotor)<br />

Noise from rear of vehicle Parking brake<br />

Brake piping<br />

Suspension play or fatigue<br />

168

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