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HOMESERVICE MANUALSISUZU2006ASCENDER S, 5.3 M, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 464 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & COMPONENT CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) - X1 (LNJ)
2006 Isuzu Ascender S, 5.3 M, 4WD

Engine Control Module (ECM) - X1 (LNJ)

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Engine Control Module (ECM) - X1 (LNJ)
WARNING: This page is about a different car, the 2008 Suzuki XL7, 2008 Pontiac Torrent, and 2008 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Electronic Control Module (ECM) - X1 (LNJ) Connector End View
GM1590592Courtesy of GENERAL MOTORS CORP.
Electronic Control Module (ECM) - X1 (LNJ)

Pin Wire Circuit Function
1 0.5 OG/BK 1786 Park/Neutral Signal
2-8 - - Not Used
9 0.5 WH 17 Stop Lamp Switch Signal or Stop Lamp Supply Voltage
10 0.5 PU/WH 1668 HO2S High Signal Sensor (Bank 1 Sensor 2)
11 0.5 TN/WH 1669 HO2S Low Signal Sensor (Bank 1 Sensor 2)
12 0.5 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
13 0.5 TN 5514 Low Reference
14-15 - - Not Used
16 0.5 PU 1589 Fuel Level Sensor Signal
17 0.5 D-BU 473 High Speed Cooling Fan Relay Control
18 0.5 BN 4 Accessory Voltage
19 0.5 PK 439 Ignition Voltage
20 0.5 RD/WH 1540 Battery Positive Voltage
21-22 - - Not Used
23 0.5 PU 1272 Low Reference 2
24 0.5 D-GN 890 Fuel Tank Pressure Sensor Signal
25-26 - - Not Used
27 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-)
28 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+)
29 0.5 D-BU 1161 Pedal Position Signal 1
30 0.5 BN 1271 Low Reference 1
31 0.5 TN 2759 Low Reference
32 0.5 L-BU 1162 Pedal Position Signal 2
33 0.5 GY 2709 5-Volt Reference 1
34 0.5 GY 2700 5-Volt Reference 1
35 - - Not Used
36 0.5 TN 1274 5-Volt Reference 1
37 0.5 TN 472 IAT Sensor Signal
38 0.5 TN 2760 Low Reference
39-40 - - Not Used
41 0.5 YE 492 MAF Sensor Signal
42-46 - - Not Used
47 0.5 PK/BK 5290 Ignition Voltage
48-49 - - Not Used
50 0.5 D-GN/WH 465 Fuel Pump Relay Control
51 - - Not Used
52 0.5 YE 447 Starter Relay Coil Control
53-55 - - Not Used
56 0.5 WH/BK 1164 5-Volt Reference 2
57 - - Not Used
58 0.5 D-GN 335 Low Speed Cooling Fan Relay Control
59 0.5 BN 5069 Main Relay Control
60 - - Not Used
61 0.5 WH 1310 EVAP Canister Vent Solenoid Control
62 - - Not Used
63 0.5 D-GN/WH 459 A/C Compressor Clutch Relay Control
64 - - Not Used
65 0.5 GY/WH 3122 HO2S Heater Low Control - Bank 1 Sensor 2
66-67 - - Not Used
68 0.5 BN/WH 419 MIL Control
69-72 - - Not Used
73 0.8 BK/WH 451 Ground
Connector Part Information 
  • OEM: 12582677
  • Service: 88988931
  • Description: 73-Way F Receptacle 0.64 2.8 Sealed (BK)
Terminal Part Information 
  • Pins: 1, 9-13, 16-20, 23-24, 27-34, 36-38, 41, 47, 50, 52, 56, 58-59, 61, 63, 65, 68
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 7116-4151-02/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.