Suzuki 2006 SX4, Service Manual

Page: 856 / 1478

7A-4 Heater and Ventilation:
Diagnostic Information and Procedures
Heater and Ventilation Symptom Diagnosis
S6RW0C7104001
Condition Possible cause Correction / Reference Item
Blower motor does not
operate with blower
speed selector ON Fuse blown Check related fuses, and then check for short
circuit to ground.
Blower motor relay faulty Check blower motor relay referring to “Blower
Motor Relay Inspection”.
Blower motor resistor faulty Check blower motor resistor referring to
“Blower Motor Resistor Inspection”.
Blower speed selector faulty Check blower speed selector referring to
“Blower Speed Selector Inspection”.
Blower motor faulty Check blower motor referring to “Blower Motor
Inspection”.
Wiring or grounding faulty Repair as necessary.
Incorrect temperature
output Temperature control cable broken or
bent (non-A/C and manual A/C) Check temperature control cable.
Temperature selector faulty (non-A/C
and manual A/C) Check temperature selector.
Incorrect installation of temperature
control cable (non-A/C and manual A/C) Check position and adjust it as necessary.
Temperature control door assembly
broken Repair temperature control door assembly.
Air ducts clogged Repair air ducts.
Heater core leaked or clogged Replace heater core.
Heater hoses leaked or clogged Replace heater hoses.
Thermostat faulty Check thermostat referring to “Thermostat
Inspection in Section 1F”.
Temperature control actuator faulty
(auto A/C) Check temperature control actuator referring to
“Temperature Control Actuator and Its Circuit
Inspection in Section 7B”.
HVAC control module faulty (auto A/C) Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit in Section 7B”.
Wiring or grounding faulty (auto A/C) Repair as necessary.
Air outlet port does not
change or does not agree
with air flow selector’s
position even if air flow
selector is changed Air flow control cable broken or bent
(non-A/C and manual A/C) Check air flow control cable.
Air flow selector faulty (non-A/C and
manual A/C) Check air flow selector.
Incorrect installation of air flow control
cable (non-A/C and manual A/C) Check position and adjust it as necessary.
Air flow control door assembly broken Repair air flow control door assembly.
Air ducts leaked or clogged Repair air ducts.
Air flow control actuator faulty (auto A/C) Check air flow control actuator referring to “Air
Flow Control Actuator and Its Circuit Inspection
in Section 7B”.
HVAC control module faulty (auto A/C) Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit in Section 7B”.
Wiring or grounding faulty (auto A/C) Repair as necessary.
Air intake door does not
change even if air intake
mode is changed Air intake door broken Repair air intake door.
Air intake control actuator faulty Check air intake control actuator referring to
“Air Intake Control Actuator Inspection”.
Air intake selector faulty Check air intake selector referring to “Air Intake
Selector Inspection”.
Wiring or grounding faulty Repair as necessary.