Dtc P0480: Fan 1 (Radiator Cooling Fan) Control Circuit - Suzuki Swift Sport 2004 Service & Repair Manual

1A-124 Engine General Information and Diagnosis:
Step
5 Wire circuit check
1) Connect connector to purge control valve with ignition
switch turned OFF.
2) Turn ON ignition switch and measure voltage between
"C37-29" terminal of ECM connector and vehicle body
ground.
Is it voltage 10 – 14 V?
6 EVAP canister purge control valve check
1) Check EVAP canister purge control valve referring to
"EVAP Canister Purge Valve Inspection in Section 1B".
Is it in good condition?
7 EVAP canister purge control circuit check
1) With ignition switch turn OFF, measure resistance
between "E23-1/16" terminal and "C37-29" terminal of
ECM connector.
Is resistance below 40

DTC P0480: Fan 1 (Radiator Cooling Fan) Control Circuit

Wiring Diagram
BLK/YEL
GRY
1
9
10
15 14 13 12 11
30 28 27 26
29
45 44 43 42 41
59
60 58 57 56
1. Individual circuit fuse box No.1
2. Main relay
3. Radiator cooling fan relay No. 1
4. Radiator cooling fan relay No. 2
Action
Ω ° °
at 20 C, 68 F?
2
BLK/YEL
BLK/YEL
BLK/RED
3
BLU/RED
BLU/RED
BLU/BLK
4
BLUWHT
BLK
5
E23
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
5. Radiator cooling fan relay No. 3
6. Radiator cooling fan motor
7. ECT sensor
8. ECM
Go to Step 6.
Go to Step 7.
Faulty ECM. Substitute
a known-good ECM and
recheck.
BRN/WHT
BLK/RED BLK/RED
BLK/RED
LT GRN
+
L
+
H
6 BLK
L–
H–
GRN
7
LT GRN
ORN
2 1 15 14 13 12 11
17 16 30 28 27 26
29
32 31 45 44 43 42 41
59
47 46 60 58 57 56
Yes
"BLU/BLK" wire is open
circuit.
Faulty EVAP canister
purge control valve.
"BLK/RED" and/or
"BLU/BLK" wire are high
resistance circuit.
8
E23-60
E23-1
12V
5V
E23-16
E23-46
C37-58 BLK/ORN
C37-15 BLK
C37-30 BLK
E23-31 BLK
E23-48
5V
C37-24
C37-55
C37
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
9. "FI" fuse
10. "RDTR FAN" fuse
No
S7RS0B1104050
2 1
17 16
32 31
47 46
I6RS0C110022-02