Suzuki Swift Sport 2004 Service & Repair Manual page 265

Step
7 Radiator cooling fan No. 2 wire circuit check
1) Turn ON ignition switch.
2) Measure voltage between "BLU/BLK" wire terminal of
disconnected radiator cooling fan control relay No. 2
connector and vehicle body ground.
Is voltage 0 V?
8 Radiator cooling fan control No. 2 check
1) Connect radiator cooling fan control relay No. 2 to
individual circuit fuse box No.1 with ignition switch
turned OFF.
2) Run engine when ECT is over 102.5 °C, 216.5 °F.
3) Measure voltage between vehicle body ground and
"BLU/BLK" wire terminal of disconnected radiator
cooling fan motor connector.
Is voltage 10 – 14 V?
9 Radiator cooling fan control relay No.2 check
1) Remove radiator cooling fan control relay No.2 with
ignition switch turned OFF.
2) Check radiator cooling fan control relay No.2 referring to
"Radiator Cooling Fan Relay Inspection in Section 1F".
Is it in good condition?
10 Radiator cooling fan No. 3 wire circuit check
1) Remove radiator cooling fan control relay No.3 with
ignition switch turned OFF.
2) Measure resistance between vehicle body ground and
"BLK" wire terminal of disconnected radiator cooling fan
control relay No. 3 connector in individual circuit fuse
box No.1.
Is resistance below 1
11 Radiator cooling fan control No. 3 check
1) Connect radiator cooling fan control relay No. 3 to
individual circuit fuse box No.1 with ignition switch
turned OFF.
2) Run engine when ECT is over 102.5 °C, 216.5 °F.
3) Measure resistance between vehicle body ground and
"BLU/WHT" wire terminal of disconnected radiator
cooling fan motor connector.
Is resistance below 2
12 Radiator cooling fan control relay No. 3 check
1) Remove radiator cooling fan control relay No.3 with
ignition switch turned OFF.
2) Check radiator cooling fan control relay No.3 referring to
"Radiator Cooling Fan Relay Inspection in Section 1F".
Is it in good condition?
13 Radiator cooling fan check
1) Check radiator cooling fan referring to "Radiator Cooling
Fan Motor On-Vehicle Inspection in Section 1F".
Is it in good condition?
Action
Ω
?
Ω
?
Engine General Information and Diagnosis:
Yes
Go to Step 8.
Go to Step 10.
"BLU/BLK" wire is open
or high resistance
circuit.
Go to Step 11.
Go to Step 13.
"BLU/WHT" wire is open
or high resistance
circuit.
Substitute a known-
good ECM and recheck.
1A-215
No
"BLU/BLK" wire is
shorted to power supply
circuit.
Go to Step 9.
Faulty radiator cooling
fan control relay No.2.
"BLK" wire is open or
high resistance circuit.
Go to Step 12.
Faulty radiator cooling
fan control relay No.3.
Faulty radiator cooling
fan.