Suzuki Swift User Manual page 262

6-1-106 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
TABLE B-7 RADIATOR COOLING FAN CONTROL SYSTEM CHECK
Relay
box
"RDTR"
(Radiator fan)
INSPECTION
STEP
1 Check Fan Control System.
1) Connect scan tool to DLC with ignition switch OFF.
2) Start engine and select "DATA LIST" mode on scan tool.
3) Warm up engine until coolant temp. is 97.5_C, 208_F or
higher and A/C switch turn OFF. (If engine coolant temp.
does not rise, check engine cooling system or ECT sensor.)
See Fig. 1.
Is radiator cooling fan started when engine coolant temp.
reached above temp.?
2 Check Radiator Cooling Fan Relay and Its Circuit.
1) Check DTC and pending DTC with scan tool.
Is DTC P0480 displayed?
3 Check Radiator Cooling Fan Relay.
1) Turn ignition switch OFF and remove radiator cooling fan
relay.
2) Check for proper connection to relay at terminals "c" and "d".
3) If OK, check that there is continuity between "c" and "d" when
battery is connected to terminals "a" and "b". See Fig. 2.
Is check result satisfactory?
4 Check Radiator Cooling Fan.
1) Turn ignition switch OFF.
2) Disconnect cooling fan motor connector.
3) Check for proper connection to motor at "Bl/R" and "B"
terminals.
4) If OK, connect battery to motor and check for operation.
See Fig. 3.
Is it in good condition?
Radiator cooling fan relay
To
ECM
Main
relay
ACTION
Radiator cooling
Fan motor
YES
Radiator cooling
fan control
system is in good
condition.
Go to DTC
P0480 Diag.
Flow Table.
Go to Step 4.
"Bl/W", "Bl/R" or
"B" circuit open.
NO
Go to Step 2.
Go to Step 3.
Replace radiator
fan relay.
Replace radiator
cooling fan
motor.