Hyundai 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
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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Removal
When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below.
[In the case of installing used ECM]
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Injector Drive Box (IDB) Repair procedures
Remove
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the IDB cover (A).
3.
Disconnect the IDB Connector (A).
4.
Remove the mounting bolts (B), an ...
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