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1A-73 Engine General Information and Diagnosis:
Voltage Check
1) Remove ECM (1) from vehicle body referring to "Engine Control Module (ECM) Removal and Installation in
Section 1C in related manual".
2) Check voltage and/or pulse signal at each terminal of couplers (2) connected, using voltmeter (3) and oscilloscope
(4).
NOTE
• As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when
ignition switch is turned ON.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal.
Check it with oscilloscope if necessary.
Viewed from harness side
C41 (31P)
9
8
7
6
5
4
3
2
1
21
20
19
18
17
16
15
14
13
12
11
10
31
30
29
28 27
26
25
24
23
22
I3RH0A110026-01
1
G04 (24P)
7
6
5
4
3
2
1
6
16
15
14
13 12
11
10
9
8
12
11
24
23
22
21
20
19
18
17
17
16
2
G03 (17P)
5
4
3
2
1
10
9
8
7
15
14
13
I2RH0B110074-01
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