Suzuki SX4 Service Manual page 258

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1A-208 Engine General Information and Diagnosis:
Step
6
A/C evaporator outlet air temp. sensor check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to "E01-57" and "E01-54"
wire terminals of ECM connector.
3) If OK, measure resistance between "E01-57" and "E01-
54" wire terminals of ECM connector.
Evaporator temp. sensor resistance
At 0 °C: 6.3 – 6.9 kΩ
At 25 °C: 1.8 – 2.2 kΩ
Resistance
7
6
5
4
3
2
1
10
20
Is resistance within specification?
7
DTC check of A/C refrigerant pressure sensor circuit
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch.
3) Check ECM for DTC of A/C refrigerant pressure sensor
circuit.
Is there DTC P0532 or DTC P0533?
8
A/C refrigerant pressure sensor voltage check
1) Check A/C refrigerant pressure sensor voltage referring
to "Inspection of ECM and Its Circuits".
Is voltage within specified value?
9
A/C condenser cooling fan check
1) Check A/C condenser cooling fan referring to
"Condenser Cooling Fan Inspection: Manual Type in
Section 7B".
Is check result satisfactory?
10 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?
Action
0
10
20
60
70
30
40
50
Temperature
Go to Step 7.
30
80
I3RB0A110053-01
Go to applicable DTC
diag. flow.
Go to Step 9.
A/C condenser cooling
fan drive circuit
malfunction. If circuit is
OK, go to Step 6.
A/C system is in good
condition.
Yes
Faulty A/C evaporator
outlet air temp. sensor
or its circuit.
Go to Step 8.
Check amount of
refrigerant. If OK,
replace A/C refrigerant
pressure sensor.
Replace A/C condenser
cooling fan motor.
Go to Step 11.
No

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