Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSISUZU2006ASCENDER S, 4.2 S, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSOEM CONNECTOR END VIEWS (5 OF 5)POWERTRAIN CONTROL MODULE (PCM) CONNECTOR END VIEWS (4.2L)POWERTRAIN CONTROL MODULE (PCM) CONNECTOR END VIEW
2006 Isuzu Ascender S, 4.2 S, 4WD
Powertrain Control Module (PCM) Connector End view
2006 Isuzu Ascender S, 4.2 S, 4WDSECTION Powertrain Control Module (PCM) Connector End view
Powertrain Control Module (PCM) C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1-2 | - | - | Not Used |
| 3 | GY/BK | 1694 | 4WD Low Signal (NP8) |
| 4-5 | - | - | Not Used |
| 6 | D-GN/WH | 459 | A/C Compressor Clutch Relay Control |
| 7 | BN | 1271 | Low Reference |
| 8 | PU | 1272 | Low Reference |
| 9-10 | - | - | Not Used |
| 11 | GY/BK | 87 | Cruise Control Resume/Accel Switch Signal (K34) |
| 12 | PU | 1589 | Fuel Level Sensor Signal |
| 13 | PK | 839 | Ignition 1 Voltage |
| 14 | - | - | Not Used |
| 15 | YE | 710 | Class 2 Serial Data |
| 16 | D-GN | 1049 | PCM Class 2 Serial Data |
| 17 | GY | 2700 | 5-Volt Reference |
| 18 | PK | 1020 | Ignition 0 Voltage |
| 19 | PK | 439 | Ignition 1 Voltage |
| 20 | OG | 440 | Battery Positive Voltage |
| 21 | D-GN/WH | 817 | Vehicle Speed Signal |
| 22 | WH | 1310 | EVAP Canister Vent Solenoid Control |
| 23 | D-BU | 2364 | Cooling Fan Speed Signal |
| 24 | D-GN | 890 | Fuel Tank Pressure Sensor Signal |
| 25 | - | - | Not Used |
| 26 | RD/BK | 380 | A/C Refrigerant Pressure Sensor Signal |
| 27 | D-BU | 1161 | APP Sensor 1 Signal |
| 28 | D-BU | 84 | Cruise Control Set/Coast Switch Signal (K34) |
| 29 | OG/BK | 510 | Low Reference |
| 30 | WH/BK | 1164 | 5-Volt Reference |
| 31 | WH | 121 | Engine Speed Signal |
| 32 | L-BU | 1320 | CHMSL Supply Voltage/Stop Lamp Supply Voltage (K34) |
| 33 | - | - | Not Used |
| 34 | BN | 436 | AIR Pump Relay Control (K18) |
| 35-36 | - | - | Not Used |
| 37 | D-GN/WH | 465 | Fuel Pump Relay Control |
| 38 | YE | 5991 | Powertrain Relay Coil Control |
| 39 | - | - | Not Used |
| 40 | BN/WH | 419 | MIL Control |
| 41 | L-BU | 1162 | APP Sensor 2 Signal |
| 42 | - | - | Not Used |
| 43 | TN | 1274 | 5-Volt Reference |
| 44-45 | - | - | Not Used |
| 46 | PU | 420 | TCC Brake Switch/Cruise Control Release Signal |
| 47 | GY | 2709 | 5-Volt Reference |
| 48 | YE/BK | 625 | Starter Enable Relay Control |
| 49 | GY | 397 | Cruise Control On Switch Signal (K34) |
| 50 | PU | 806 | Crank Voltage |
| 51 | WH/BK | 2366 | Cooling Fan Clutch Control |
| 52-53 | - | - | Not Used |
| 54 | D-GN | 1433 | PNP/Clutch Start Switch Signal |
| 55 | BK | 2759 | Low Reference |
| 56 | BK | 2751 | Low Reference |
Powertrain Control Module (PCM) C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | RD | 225 | Generator Turn On Signal |
| 2 | D-GN | 485 | TP Sensor 1 Signal |
| 3 | - | - | Not Used |
| 4 | GY | 597 | 5-Volt Reference |
| 5 | BN/WH | 6789 | Air Injection Reaction Control Valve #1 Volt Reference (K18) |
| 6 | GY | 2701 | 5-Volt Reference |
| 7 | PU | 486 | TP Sensor 2 Signal |
| 8 | GY | 2704 | 5-Volt Reference |
| 9 | L-BU/BK | 1688 | 5-Volt Reference |
| 10 | D-GN/WH | 2124 | IC 4 Control |
| 11-13 | - | - | Not Used |
| 14 | PK/BK | 632 | Low Reference |
| 15-16 | - | - | Not Used |
| 17 | YE | 573 | CKP Sensor |
| 18 | PU | 574 | Low Reference |
| 19 | BK | 2199 | Low Reference |
| 20 | OG/BK | 469 | Low Reference |
| 21 | GY | 2365 | Low Reference |
| 22 | RD | 631 | 12-Volt Reference |
| 23-25 | - | - | Not Used |
| 26 | BN/WH | 633 | CMP Sensor Signal |
| 27 | - | - | Not Used |
| 28 | PU | 421 | Air Injection Reaction Solenoid Relay Coil Control (K18) |
| 29 | - | - | Not Used |
| 30 | D-BU/WH | 6785 | Air Injection Reaction Control Valve #1 Low Reference (K18) |
| 31 | - | - | Not Used |
| 32 | TN | 1664 | HO2S Low Signal |
| 33 | BK | 1744 | Fuel Injector 1 Control |
| 34 | - | - | Not Used |
| 35 | YE | 410 | ECT Sensor Signal |
| 36 | BK/WH | 1704 | Low Reference |
| 37 | L-GN | 432 | MAP Sensor Signal |
| 38 | - | - | Not Used |
| 39 | BK | 2752 | Low Reference |
| 40 | PU | 2121 | IC 1 Control |
| 41 | YE | 492 | MAF Sensor Signal |
| 42 | L-BU | 2123 | IC 3 Control |
| 43 | - | - | Not Used |
| 44 | RD/WH | 2122 | IC 2 Control |
| 45 | GY | 23 | Generator Field Duty Cycle Signal |
| 46 | - | - | Not Used |
| 47 | BN | 2198 | Camshaft Position Actuator Solenoid High Control |
| 48 | PU/WH | 1665 | HO2S High Signal |
| 49-50 | - | - | Not Used |
| 51 | TN | 472 | IAT Sensor Signal |
| 52 | BK | 2761 | Low Reference |
| 53 | BK/WH | 845 | Fuel Injector 5 Control |
| 54 | YE/BK | 846 | Fuel Injector 6 Control |
| 55 | PK/BK | 1746 | Fuel Injector 3 Control |
| 56 | L-GN/BK | 1745 | Fuel Injector 2 Control |
| 57 | L-BU/BK | 844 | Fuel Injector 4 Control |
| 58 | D-GN | 676 | HO2S Heater Low Control |
| 59 | D-GN | 2125 | IC 5 Control |
| 60 | L-BU/WH | 2126 | IC 6 Control |
| 61-63 | - | - | Not Used |
| 64 | BK | 2760 | Low Reference |
| 65 | BN | 582 | TAC Motor Control - 2 |
| 66 | YE | 581 | TAC Motor Control - 1 |
| 67 | - | - | Not Used |
| 68 | D-BU | 496 | Knock Sensor [1] Signal |
| 69 | GY | 1716 | Low Reference |
| 70 | - | - | Not Used |
| 71 | GY | 2303 | Low Reference |
| 72 | L-BU | 1876 | Knock Sensor 2 Signal |
| 73 | BK | 450 | Ground |
Powertrain Control Module (PCM) C3
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | PK | 1224 | Transmission Fluid Pressure Switch Signal A |
| 2 | GY | 773 | Transmission Range Switch Signal C |
| 3 | - | - | Not Used |
| 4 | TN/WH | 1669 | HO2S Low Signal |
| 5 | - | - | Not Used |
| 6 | RD/BK | 1228 | PC Solenoid Valve High Control |
| 7 | YE/BK | 1227 | TFT Sensor Signal |
| 8-14 | - | - | Not Used |
| 15 | TN/BK | 231 | Oil Pressure Switch Signal |
| 16 | - | - | Not Used |
| 17 | BK | 2762 | Low Reference |
| 18 | - | - | Not Used |
| 19 | PU/WH | 1668 | HO2S High Signal |
| 20 | BK/WH | 771 | Transmission Range Switch Signal A |
| 21 | WH | 687 | 3-2 Shift Solenoid Valve Control |
| 22-24 | - | - | Not Used |
| 25 | TN/BK | 422 | TCC Solenoid Valve Control |
| 26-29 | - | - | Not Used |
| 30 | RD | 1225 | Transmission Fluid Pressure Switch Signal B |
| 31 | YE | 6787 | Air Injection Reaction Control Valve #1 Control (K18) |
| 32 | - | - | Not Used |
| 33 | L-GN | 1222 | 1-2 Shift Solenoid Valve Control |
| 34 | TN/BK | 464 | Delivered Torque Signal |
| 35 | YE/BK | 1223 | 2-3 Shift Solenoid Valve Control |
| 36 | PU | 114 | Low Oil Pressure Switch Signal |
| 37 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
| 38 | - | - | Not Used |
| 39 | BN | 418 | TCC PWM Solenoid Valve Control |
| 40-42 | - | - | Not Used |
| 43 | D-BU | 1225 | Transmission Fluid Pressure Switch Signal B |
| 44 | L-GN/BK | 822 | VSS Low Signal |
| 45 | PU/WH | 821 | VSS High Signal |
| 46 | BK/WH | 1423 | HO2S Heater Low Control |
| 47 | OG/BK | 463 | Requested Torque Signal |
| 48 | L-BU/WH | 1229 | PC Solenoid Valve Low Control |
| 49 | - | - | Not Used |
| 50 | YE | 772 | Transmission Range Switch Signal B |
| 51 | - | - | Not Used |
| 52 | WH | 776 | Transmission Range Switch Signal P |
| 53-56 | - | - | Not Used |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.