Suzuki SWIFT RS415 2017, Service Manual

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7B-15 Air Conditioning System:
A/C System Inspection at ECM
S4RS0A7204004
Voltage Check
ECM and its circuits can be checked at ECM wiring couplers by measuring voltage.
CAUTION:
• ECM connectors are waterproofed. Each terminal of the ECM connectors is sealed up with the
grommet. Therefore, do not measure circuit voltage and resistance by inserting the tester’s probe
into the sealed terminal at the harness side. Or, ECM and its circuits may be damaged by water.
• ECM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to ECM
with couplers disconnected from ECM.
1) Remove ECM from its bracket referring to “Engine Control Module (ECM) Removal and Installation: in Section
1C”.
2) Connect ECM couplers to ECM.
3) Check voltage at each terminal.
NOTE:
As each terminal voltage is affected by the battery voltage, confirm that the battery voltage is 11 V or
more when ignition switch is ON position.
Terminal arrangement of ECM coupler (Viewed from harness side)
I4RS0A720050-
E23 C37
3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53 59 60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8 3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53 59 60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8
I4RS0A720010-