Radiator Cooling Fan Low Speed Control System Check - Suzuki Grand Vitara Service Manual

Radiator Cooling Fan Low Speed Control System Check

Wiring Diagram
YEL/GRN
BLU/WHT
10
2
1
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
60 59 58 57 56
1. Fuse box No.1
2. Ignition switch
3. Radiator cooling fan relay No. 1
4. Radiator cooling fan relay No. 2
Troubleshooting
WARNING
!
Keep hands, tools, and clothing away from engine cooling fan to help prevent personal injury. This fan
is electric and can come on whether or not the engine is running. The fan can start automatically in
response to the ECT sensor with the ignition switch at the "ON" position.
NOTE
• Before performed troubleshooting, be sure to read the "Precautions of ECM Circuit Inspection: ".
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to "Inspection of ECM and Its Circuits: ".
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3
BLU/RED 6
BLU/YEL
YEL/GRN
7
BLK
BLU/BLK
YEL/GRN
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 No.1
7. Radiator cooling fan motor No.2
8. ECM
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Engine General Information and Diagnosis:
RED/BLK E23-46
4
BLK
E23-47
RED
BLU
BLU
5
E23-48
RED/YEL
9
PPL/YEL C37-24
GRY/GRN
C37-57
2 1 15 14 13 12 11
17 16 30 29 28 27 26
44
32 31 45 43 42 41
47 46 60 59 58 57 56
8
C37-15 BLK/ORN
C37-30 BLK/ORN
C37-29
BLK/YEL
C37-48
BLK/YEL
BLK/YEL
C37-58
5V
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. ECT sensor
10. "IG2 SIG" fuse
1A-250
S5JB0A1104071
2 1
17 16
32 31
47 46
I5JB0A110105-01