Rear A/C System - Suzuki GRAND VITARA XL-7 Owner's Manual

1B-8 AIR CONDITIONING (OPTIONAL)

Rear A/C system

Condition
Cool air dose not come
out (Rear blower motor
normal operative)
Cool air dose not come
out (Rear blower motor
dose not operative)
Cool air dose not come
out at only intermittently
Cool air dose not come
out at only high speed
Insufficient velocity of
cooled air
Possible Cause
Solenoid valve relay faulty
Solenoid valve faulty
Diode in rear A/C harness faulty
Rear A/C evaporator temperature controller faulty
Rear blower motor switch faulty
Rear A/C evaporator clogged or frosted
Rear expansion valve faulty
Air leaking from rear A/C unit or air duct
Insufficient or excessive charge of refrigerant
Refrigerant pipe or hose deformed
Fuse blown
Rear blower motor relay faulty
Rear A/C main switch faulty
Rear blower motor switch faulty
Rear blower motor resister faulty
Wiring or grounding faulty
Rear blower motor faulty
Loose or poor connected wiring connector
Rear expansion valve faulty
Rear A/C evaporator temperature controller faulty
Wiring or grounding faulty
Rear A/C evaporator frosted
Rear A/C evaporator clogged or frosted
Air leaking from rear A/C unit or air duct
Rear blower motor faulty
Wiring or grounding faulty
Correction
Check solenoid valve relay, and then
replace if necessary
Check solenoid valve, and then replace if
necessary
Check diode, and then replace rear A/C
harness if necessary
Check rear A/C evaporator temperature
controller, and then replace if necessary
Check rear blower motor switch, and
then repair rear A/C evaporator and
check rear A/C evaporator temperature
controller if necessary
Check rear A/C evaporator, and then
replace if necessary
Check rear expansion valve, and then
replace if necessary
Check and repair if necessary
Check charge of refrigerant, and then
perform recovery, evacuation and charg-
ing if necessary
Check pipe (hose), and then replace if
necessary
Check "A/C" and "REAR BLOW" fuses,
and then check for short circuit to ground
Check rear blower motor relay, and then
replace if necessary
Check rear A/C main switch, and then
replace if necessary
Check rear blower motor switch, and
then replace if necessary
Check rear blower motor resister, and
then replace if necessary
Check and repair
Check rear blower motor, and then
replace if necessary
Connect connector correctly
Check rear expansion valve, and then
replace if necessary
Check rear A/C evaporator temperature
controller, and then replace if necessary
Check and repair
Check rear A/C evaporator temperature,
evaporator drain hose and then replace if
necessary
Check rear A/C evaporator, and then
repair rear A/C evaporator or check rear
A/C evaporator temperature if necessary
Check rear A/C unit and air duct, and
then repair if necessary
Check rear blower motor, and then
replace if necessary
Check and repair