Inspection Of Ecm (Pcm) And Its Circuits - Suzuki Swift User Manual

6-34 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)
1
13 12 11
10 9 8
24
26 25
23 22 21
INSPECTION OF ECM (PCM) AND ITS
CIRCUITS
ECM (PCM) and its circuits can be checked at ECM (PCM) wiring
couplers by measuring voltage and resistance.
CAUTION:
ECM (PCM) cannot be checked by itself. It is strictly prohib-
ited to connect voltmeter or ohmmeter to ECM (PCM) with
coupler disconnected from it.
Voltage Check
1) Remove ECM (PCM) (1) from body referring to Section 6E.
2) Check voltage at each terminal of couplers (2) connected.
NOTE:
As each terminal voltage is affected by the battery voltage,
confirm that it is 11 V or more when ignition switch is ON.
1. ECM (PCM)
2. Couplers
3. Body ground
4. Service wire
C02
2 1
8
7 6 5 4 3
15 14
20 19 18 17 16 16
2
C01
2 1 11
7 6 5 4 3
15 14 13 12 11 10 9 22
C03
10 9 3
8 7 6 5 4
19
21 20 18 17 16 15 14
1. ECM (PCM)
2. ECM (PCM) couplers
(Viewed from harness side)
2 1
12
13