Dtc P0480: Fan 1 (Radiator Cooling Fan) Control Circuit - Suzuki 2006 SX4 Service Manual

Step
3 Wire harness check
1) Check that fuel level sensor signal circuit ("YEL/RED"
wire circuit) is in good condition.
Is it in good condition?
4 ECM power and ground circuit check
1) Check that ECM power and ground circuits are in good
condition referring to "ECM Power and Ground Circuit
Check".
Are they in good condition?

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

Wiring Diagram
BLK/YEL
GRY
1
7
8
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
59
60 58 57 56
1. Individual circuit fuse box No.1
2. Main relay
3. Radiator cooling fan relay
DTC Detecting Condition and Trouble Area
DTC detecting condition
Monitor signal of radiator cooling fan relay is different from
command signal.
(1 driving cycle detection logic)
DTC Confirmation Procedure
1) Turn OFF ignition switch.
2) Clear DTC with ignition switch turned ON.
3) Run engine at idle speed.
4) Check DTC.
Action
2
BLK/YEL
BLK/YEL
BLK/RED
3
BLU/RED
E01
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
4. Radiator cooling fan motor
5. ECT sensor
6. ECM
Engine General Information and Diagnosis:
Go to Step 4.
Substitute a known-
good ECM and recheck.
BRN/WHT
BLK/RED BLK/RED
BLK/RED
LT GRN
4 BLK
5
LT GRN
ORN
2 1 15 14 13 12 11
17 16 30 29 28 27 26
44
32 31 45 43 42 41
59
47 46 60 58 57 56
• Radiator cooling fan relay circuit malfunction
• Radiator cooling fan relay malfunction
• ECM malfunction
Yes
Repair fuel level sensor
signal circuit.
Repair ECM power and/
or ground circuit.
6
E01-60
E01-1
12V 5V
E01-16
E01-46
C01-58 BLK/ORN
C01-15
BLK
C01-30 BLK
E01-31
BLK
5V
C01-24
C01-55
C01
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
7. "FI" fuse
8. "RDTR" fuse
Trouble area
1A-129
No
S6RW0D1104048
2 1
17 16
32 31
47 46
I6RW0D110041-01