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Hyundai Equus: Injector Drive Box (IDB) Schematic Diagrams - Engine Control System - Engine Control/Fuel System - Hyundai Equus VI 2009-2025 Service ManualHyundai Equus: Injector Drive Box (IDB) Schematic Diagrams

Second generation VI (2009–2025) / Hyundai Equus VI 2009-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Injector Drive Box (IDB) Schematic Diagrams

Injector Drive Box (IDB)
IDB Connector

ECM Terminal Function
Connector [C200-IDB]
Pin No.
Description
Connected to
1
ECM ground
Chassis ground
2
ECM ground
Chassis ground
3
Battery power (B+)
Main relay
4
ECM ground
Chassis ground
5
Battery power (B+)
Main relay
6
Battery power (B+)
Main relay
7
Fuel Pressure Control Valve (FPCV) #1 [Low] control output
Fuel Pressure Control Valve (FPCV)
8
-
x
9
-
x
10
-
x
11
-
x
12
-
x
13
-
x
14
-
x
15
-
x
16
-
x
17
-
x
18
-
x
19
-
x
20
-
x
21
-
x
22
-
x
23
-
x
24
-
x
25
-
x
26
-
x
27
-
x
28
-
x
29
Fuel Pressure Control Valve (FPCV) #1 [High] control output
Fuel Pressure Control Valve (FPCV)
30
-
x
31
-
x
32
-
x
33
-
x
34
-
x
35
-
x
36
-
x
37
-
x
38
-
x
39
-
x
40
-
x
41
-
x
42
-
x
43
-
x
44
-
x
45
-
x
46
-
x
47
-
x
48
-
x
49
-
x
50
-
x
51
Fuel Pressure Control Valve (FPCV) #2 [Low] control output
Fuel Pressure Control Valve (FPCV)
52
-
x
53
-
x
54
Fuel power #2 [SEL 1] signal input
Engine Control Module (ECM)
55
Fuel power #1 [SEL 1] signal input
Engine Control Module (ECM)
56
Fuel power #1 [ON] signal input
Engine Control Module (ECM)
57
Injector (Cylinder #8) signal input
Engine Control Module (ECM)
58
Injector (Cylinder #6) signal input
Engine Control Module (ECM)
59
Injector (Cylinder #5) signal input
Engine Control Module (ECM)
60
Injector (Cylinder #4) signal input
Engine Control Module (ECM)
61
-
x
62
-
x
63
-
x
64
Battery power (B+)
Ignition Switch
65
Injector (Cylinder #1) [Low] control output
Injector (Cylinder #1)
66
Injector (Cylinder #1) [High] control output
Injector (Cylinder #1)
67
Injector (Cylinder #7) [High] control output
Injector (Cylinder #7)
68
Injector (Cylinder #7) [Low] control output
Injector (Cylinder #7)
69
Injector (Cylinder #2) [Low] control output
Injector (Cylinder #2)
70
Injector (Cylinder #2) [High] control output
Injector (Cylinder #2)
71
Injector (Cylinder #8) [High] control output
Injector (Cylinder #8)
72
Injector (Cylinder #8) [Low] control output
Injector (Cylinder #8)
73
Fuel Pressure Control Valve (FPCV) #2 [High] control output
Fuel Pressure Control Valve (FPCV)
74
-
x
75
Fuel power #1 [SEL 0] signal input
Engine Control Module (ECM)
76
Fuel power #2 [SEL 0] signal input
Engine Control Module (ECM)
77
Fuel power #2 [ON] signal input
Engine Control Module (ECM)
78
Injector (Cylinder #3) signal input
Engine Control Module (ECM)
79
-
x
80
Injector (Cylinder #2) signal input
Engine Control Module (ECM)
81
Injector (Cylinder #1) signal input
Engine Control Module (ECM)
82
Injector (Cylinder #7) signal input
Engine Control Module (ECM)
83
-
x
84
C-CAN [High]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
85
C-CAN [Low]
Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector
86
-
x
87
Injector (Cylinder #4) [Low] control output
Injector (Cylinder #4)
88
Injector (Cylinder #4) [High] control output
Injector (Cylinder #4)
89
Injector (Cylinder #6) [High] control output
Injector (Cylinder #6)
90
Injector (Cylinder #6) [Low] control output
Injector (Cylinder #6)
91
Injector (Cylinder #5) [Low] control output
Injector (Cylinder #5)
92
Injector (Cylinder #5) [High] control output
Injector (Cylinder #5)
93
Injector (Cylinder #3) [High] control output
Injector (Cylinder #3)
94
Injector (Cylinder #3) [Low] control output
Injector (Cylinder #3)

ECM Terminal Function
Connector [C200-IDB]
Pin No.
Description
Condition
Type
Level
1
ECM ground
Idle
DC voltage
Max. 50mV
2
ECM ground
Idle
DC voltage
Max. 50mV
3
Battery power (B+)
IG OFF
DC voltage
Max. 0.5V
IG ON
battery voltage
4
ECM ground
Idle
DC voltage
Max. 50mV
5
Battery power (B+)
IG OFF
DC voltage
Max. 0.5V
IG ON
battery voltage
6
Battery power (B+)
IG OFF
DC voltage
Max. 0.5V
IG ON
battery voltage
7
Fuel Pressure Control Valve(FPCV) #1 [Low] control output
Idle
DC voltage
battery voltage
Max. 1.0V
8
-
x
x
x
9
-
x
x
x
10
-
x
x
x
11
-
x
x
x
12
-
x
x
x
13
-
x
x
x
14
-
x
x
x
15
-
x
x
x
16
-
x
x
x
17
-
x
x
x
18
-
x
x
x
19
-
x
x
x
20
-
x
x
x
21
-
x
x
x
22
-
x
x
x
23
-
x
x
x
24
-
x
x
x
25
-
x
x
x
26
-
x
x
x
27
-
x
x
x
28
-
x
x
x
29
Fuel Pressure Control Valve (FPCV) #1 [High] control output
Idle
DC voltage
battery voltage
Max. 1.0V
30
-
x
x
x
31
-
x
x
x
32
-
x
x
x
33
-
x
x
x
34
-
x
x
x
35
-
x
x
x
36
-
x
x
x
37
-
x
x
x
38
-
x
x
x
39
-
x
x
x
40
-
x
x
x
41
-
x
x
x
42
-
x
x
x
43
-
x
x
x
44
-
x
x
x
45
-
x
x
x
46
-
x
x
x
47
-
x
x
x
48
-
x
x
x
49
-
x
x
x
50
-
x
x
x
51
Fuel Pressure Control Valve (FPCV) #2 [High] control output
Idle
DC voltage
battery voltage
Max. 1.0V
52
-
x
x
x
53
-
x
x
x
54
Fuel power #2 [SEL 1] signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
55
Fuel power #1 [SEL 1] signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
56
Fuel power #1 [ON] signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
57
Injector (Cylinder #8) signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
58
Injector (Cylinder #6) signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
59
Injector (Cylinder #5) signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
60
Injector (Cylinder #4) signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
61
-
x
x
x
62
-
x
x
x
63
-
x
x
x
64
Battery power (B+)
IG OFF
DC voltage
Max. 0.5V
IG ON
battery voltage
65
Injector (Cylinder #1) [Low] control output
Idle
Pulse
High: battery voltage
Relay ON
Low: Max. 1.0V
66
Injector (Cylinder #1) [High] control output
Idle
Pulse
High: battery voltage ~ 80V
Relay ON
Low: battery voltage
67
Injector (Cylinder #7) [High] control output
Idle
Pulse
High: battery voltage ~ 80V
Relay ON
Low: battery voltage
68
Injector (Cylinder #7) [Low] control output
Idle
Pulse
High: battery voltage
Relay ON
Low: Max. 1.0V
69
Injector (Cylinder #2) [Low] control output
Idle
Pulse
High: battery voltage
Relay ON
Low: Max. 1.0V
70
Injector (Cylinder #2) [High] control output
Idle
Pulse
High: battery voltage ~ 80V
Relay ON
Low: battery voltage
71
Injector (Cylinder #8) [High] control output
Idle
Pulse
High: battery voltage ~ 80V
Relay ON
Low: battery voltage
72
Injector (Cylinder #8) [Low] control output
Idle
Pulse
High: battery voltage
Relay ON
Low: Max. 1.0V
73
Fuel Pressure Control Valve (FPCV) #2 [High] control output
Idle
DC voltage
battery voltage
Max. 1.0V
74
-
x
x
x
75
Fuel power #1 [SEL 0] signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
76
Fuel power #2 [SEL 0] signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
77
Fuel power #2 [ON] signal input
Idle
Pulse
High: battery voltage
Low: Max. 1.0V
78
Injector (Cylinder #3) signal input
Idle
Pulse
High: battery voltage
Low: Max.1.0V
79
-
x
x
x
80
Injector (Cylinder #2) signal input
Idle
Pulse
High: battery voltage
Low: Max.1.0V
81
Injector (Cylinder #1) signal input
Idle
Pulse
High: battery voltage
Low: Max.1.0V
82
Injector (Cylinder #7) signal input
Idle
Pulse
High: battery voltage
Low: Max.1.0V
83
-
x
x
x
84
C-CAN [High]
Recessive
Pulse
2.0 ~ 3.0V
Dominant
2.75 ~ 4.5V
85
C-CAN [Low]
Recessive
Pulse
2.0 ~ 3.0V
Dominant
2.75 ~ 4.5V
86
-
x
x
x
87
Injector (Cylinder #4) [Low] control output
Idle
DC voltage
High: battery voltage
Low: Max. 1.0V
88
Injector (Cylinder #4) [High] control output
Idle
DC voltage
High: battery voltage ~ 80V
Low: battery voltage
89
Injector (Cylinder #6) [High] control output
Idle
DC voltage
High: battery voltage ~ 80V
Low: battery voltage
90
Injector (Cylinder #6) [High] control output
Idle
DC voltage
High: battery voltage ~ 80V
Low: battery voltage
91
Injector (Cylinder #5) [Low] control output
Idle
DC voltage
High: battery voltage
Low: Max. 1.0V
92
Injector (Cylinder #5) [High] control output
Idle
DC voltage
High: battery voltage ~ 80V
Low: battery voltage
93
Injector (Cylinder #3) [Low] control output
Idle
DC voltage
High: battery voltage
Low: Max. 1.0V
94
Injector (Cylinder #3) [High] control output
Idle
DC voltage
High: battery voltage ~ 80V
Low: battery voltage

Circuit Diagram

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