Suzuki 2006 SX4, Service Manual

Page: 206 / 1478

1A-162 Engine General Information and Diagnosis:
9 A/C evaporator temperature sensor check
1) Check A/C evaporator temperature sensor referring to
“Evaporator Temperature Sensor Inspection in Section
7B”.
Is resistance within specification?
Go to Step 10. Faulty A/C evaporator
temperature sensor.
10 A/C condenser cooling fan check
1) Check A/C condenser cooling fan referring to
“Condenser Cooling Fan Inspection in Section 7B”.
Is check result satisfactory?
A/C condenser cooling
fan drive circuit
malfunction. If circuit is
OK, go to Step 5. Replace A/C condenser
cooling fan motor.
11 A/C compressor control system check
Is A/C compressor started when A/C and blower speed
selector switch are turned ON with engine running?
A/C system is in good
condition. Go to Step 12.
12 A/C compressor relay circuit check
1) Measure voltage between “E01-49” wire terminal of
ECM connector and vehicle body ground under the
following conditions respectively.
Voltage between “E01-49” terminal of ECM
connector and ground
While engine running and A/C switch turned OFF: 10
– 14 V
While engine running, A/C and blower speed
selector switch turned ON: 0 – 1 V
Is check result satisfactory?
Go to Step 13. Go to Step 14.
13 A/C compressor relay check
1) Check A/C compressor relay referring to “A/C System
Relay Inspection in Section 7B”.
Is it in good condition?
A/C compressor drive
circuit malfunction. Replace A/C
compressor relay.
14 A/C compressor relay circuit check
1) Remove A/C compressor relay with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between “BLU/
YEL” wire terminal of A/C compressor relay connector
and vehicle body ground.
Is voltage 10 –14 V?
Go to Step 15. “BLU/YEL” wire is open
circuit.
15 A/C compressor relay check
1) Check A/C compressor relay referring to “A/C System
Relay Inspection in Section 7B”.
Is it in good condition?
“GRY” wire is open
circuit. If OK, substitute
a known-good ECM and
recheck. Replace A/C
compressor relay.
Step Action Yes No