TATA Motors Nano Owner's Manual & Service Book page 62

PRELIMINARY TROUBLE SHOOTING
SR PROBLEM OBSERVED
NO
SUSPENSION
1. Abnormal or excessive
tyre wear
2 Abnormal noise from
front end
3. Ride too soft/ bumpy
4. Suspension bottoms
AC / HVAC
1 Blower motor does not
operate
2 Motor operates but air
flow is minimum
3 Insufficient Heating
60
PROBLEM CAUSE
Tyre out of balance
Steering geometry disturbed
Tyres not adequately inflated
Wobbly wheel or tyre
Defective tyre
Hub play not proper
Brake grabbing
Excessive braking
Damaged struts or mounting
Worn suspension arm
bushings
Loose wheel bolts
Loose suspension bolts
or nuts
Excessive hub play
Faulty struts
Over loaded
Faulty struts
Blown Fuse
Faulty connection
Faulty motor
Faulty or poor connection at
Faulty fan switch
Obstruction in the evaporator Clean Evaporator
inlet
Air Leak
Air Leak
Kinematic linkage damaged
ACTION TO BE TAKEN
Check balance and/ or
adjust if required.
Adjust steering geometry.
Adjust tyre pressure.
Replace wheel or tyre.
Replace tyre.
Replace bearing.
Check & rectify.
Modify driving habit.
Repair mounting or repair
strut
Replace
Tighten wheel bolts
Tighten suspension bolts or
nuts
Replace bearing.
Replace struts
Check loading
Replace struts
Replace Fuse and correct
any disconnection in wiring
Secure all connections
properly.
Replace motor if no
conductance
Replace resistor block if
found defective
Replace Switch
Seal correctly.
Seal correctly.
Get the defect rectified at
nearest authorized service
center