A/C System Circuits Check - Suzuki GRAND VITARA JB416 Service Manual

1A-68 Engine General Information and Diagnosis:

A/C System Circuits Check

Wiring Diagram
1
3
YEL/GRN
6
BLU/WHT
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
59
60 58 57 56
1. BCM
2. ABS / ESP® control module
3. HVAC control module
4. ECM
5. Evaporator temperature sensor
Troubleshooting
NOTE
• Before performed troubleshooting, be sure to read the "Precautions of ECM Circuit Inspection: in
related manual".
• 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: ".
• When A/C evaporator outlet air temp. is below 0 °C (32 °F) (for J20 engine) or 1.3 °C (34.3 °F) (for M16
engine), A/C remains OFF ("E23-49" terminal voltage becomes 10 – 14 V). This condition is not
abnormal.
RED
WHT
PNK/GRN
YEL/RED
12V
5V
WHT/BLK
BLK/RED
7
*RED
YEL/GRN
BLU/RED
10
YEL/GRN
12
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
6. "IG2 SIG" fuse
7. "CPRSR" fuse
8. Compressor relay
9. Compressor
10. Radiator cooling fan relay No.1
RED
WHT
WHT/BLU
WHT/RED
5
WHT/RED
WHT/BLU
8
9
WHT/RED
PNK
RED/BLK
11
BLU/YEL
13
BLK
RED
14 BLU
BLK
BLU
RED/YEL
15
GRY/RED
GRY/BLK
16
PPL/YEL
GRY/GRN
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
11. Radiator cooling fan relay No.2
12. Radiator cooling fan relay No.3
13. Radiator cooling fan No.1
14. Radiator cooling fan No.2
15. A/C refrigerant pressure sensor
2
4
E23-4
E23-19
E23-49
E23-46
E23-47
E23-48
5V
5V
C37-14
C37-12
5V
C37-24
C37-57
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
16. ECT sensor
*: For M16 engine
S5JB0E1104085
2 1
17 16
32 31
47 46
I5JB0A110103-02