Dtc P0480 Fan 1 (Radiator Cooling Fan) Control Circuit - Suzuki WagonR+ RB310 Service Manual

DTC P0480 Fan 1 (Radiator Cooling Fan) Control Circuit

Wiring Diagram
BLK/YEL
1
80A 20A 30A
E23
7 6 5 4 3
17 16 15 14 13 12 11
27 26 25 24 23 22 21
34 33 32 31
1. Relay box 3. Radiator fan relay
2. Main relay 4. Radiator fan motor
Circuit Description
Radiator fan relay is controlled by ECM if ECT is specified value.
When A/C condenser fan motor is running while head light is turned ON and engine is running at below 1500 r/
min, radiator fan relay is turned OFF for 2 sec. by ECM.
DTC Detecting Condition
• Monitor signal of radiator fan relay is different from com-
mand signal.
DTC Confirmation Procedure
1) Turn ignition switch turned OFF.
2) Clear DTC with ignition switch ON.
3) Warm up engine until radiator cooling fan starts to operate.
4) Check pending DTC in "ON BOARD TEST" or "PENDING DTC" mode and DTC in "DTC" mode.
2
BLK/YEL
BLK/RED
BLK/YEL
BLK/RED
3
BLK/YEL BLU/RED
5
E22
2 1 7 6 5 4 3
10 9 8 19 18 17 16 15 14 13 12 11
20 19 18 27 26 25 24 23
30 29 28 35 34 33 32 31
5. ECT sensor
6. ECM
ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-127
6
BLU/BLK
E23-15
BLK/RED E21-6
BLK/RED E21-5
BLU
E21-4
4
BLK
M
YEL/GRN E22-16
E22-28
BRN/WHT
E21
2 1 6 5 4 3 2
10 9 8 16 15 14 13 12 11 10 9 8
22 21 20 27 26 25 24 23 22 21 20 19
30 29 28 35 34 33 32 31 30
• "BLK/RED" or "BLU" circuit open or short
• Radiator fan relay malfunction
• ECM malfunction
E22-1 BLK
12V 5V
E23-2
BLK/YEL
E23-1
BLK/YEL
1
7
18 17
29 28
Trouble Area