Pinpoint Test A: Vehicle Drifts/Pulls

A1 CHECK FOR UNEVENLY LOADED VEHICLE
- Visually check the vehicle for an uneven loading condition.
- Is the vehicle unevenly loaded?
- Yes : ADVISE the customer of uneven loading condition.
- No : GO to A2.
A2 CHECK THE TIRE PRESSURES AND TIRE CONDITIONS
- Check the tire pressures. Refer to the Vehicle Certification (VC) label located on the driver door jamb. Check the tires for uneven/abnormal wear. Refer to Diagnosis and Testing - Wheels And Tires in WHEELS & TIRES .
- Are the tire pressures and tire conditions OK?
- Yes : GO to A3.
- No : ADJUST the tire pressures to the specified pressure or INSTALL new tires as necessary.
A3 ISOLATE TIRE DRIFT/PULL CONDITION
- Cross the front wheel and tire assemblies from left-to-right. Refer to WHEELS & TIRES .
- Does the vehicle drift/pull?
- Yes : If the vehicle drifts/pulls in the opposite direction, tire forces are causing the drift/pull. REFER to WHEELS & TIRES to diagnose tire drift pull. If the vehicle drifts/pulls in the same direction, GO to A4.
- No : Tire forces were causing the drift/pull and the concern has been corrected.
A4 CHECK FOR BRAKE DRAG
- Spin all 4 wheel and tire assemblies by hand and check for brake drag.
- Do the wheels spin freely?
- Yes : GO to A5.
- No : REFER to BRAKE SYSTEM - GENERAL INFORMATION to diagnose brake drag condition.
A5 CHECK THE WHEEL ALIGNMENT
- Using alignment equipment and the manufacturer's instructions, check the wheel alignment.
- Is the wheel alignment out of specification?
- Yes : ADJUST the alignment as necessary. REFER to GENERAL PROCEDURES .
- No : REFER to STEERING SYSTEM - GENERAL INFORMATION to diagnose steering system drift/pull/wander condition.