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HOMESERVICE MANUALSISUZU2006ASCENDER S, 5.3 M, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 379 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) X1)
2006 Isuzu Ascender S, 5.3 M, 4WD

Engine Control Module (ECM) X1)

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Engine Control Module (ECM) X1)
WARNING: This page is about a different car, the 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) X1 Connector End View
GM1228485Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X1

Pin Wire Circuit Function
1 0.35 PU 806 Crank Voltage
2 0.35 PU 420 TCC Brake Switch/Cruise Control Release Signal
3 - - Not Available
4 0.35 GY/BK 1694 4WD Low Signal (NP8)
5-6 - - Not Available
7 0.5 L-BU 1320 CHMSL Control (K34)
8 - - Not Available
9 0.35 BK 2759 Low Reference
10-11 - - Not Available
12 0.35 BN/WH 419 MIL Control
13 0.35 D-GN/WH 465 Fuel Pump Relay Control
14-15 - - Not Available
16 0.35 D-GN 1049 Class 2 Serial Data
17 - - Not Available
18 0.35 PK 1020 Ignition Voltage
19 0.5 PK 439 Ignition Voltage
20 0.35 OG 240 Battery Positive Voltage
21 0.35 GY/BK 87 Cruise Control Resume/Accel Switch Signal (K34)
22 0.35 D-BU 84 Cruise Control Set/Coast Switch Signal (K34)
23 - - Not Available
24 - - Not Available
25 0.35 WH 121 Engine Speed Signal
26-29 - - Not Available
30 0.35 GY 397 Cruise Control On Switch Signal (K34)
31 0.35 BK 452 Low Reference (5.3L, 6.0L)
32 0.35 GY 416 5-Volt Reference (5.3L, 6.0L)
33 0.35WH/BK 1164 5-Volt Reference
34 0.35 GY 2709 5-Volt Reference
35 0.35 TN 1274 5-Volt Reference
36 0.35 BN 1271 Low Reference
37 0.35 PU 1272 Low Reference
38 - - Not Available
39 0.35 D-GN/WH 817 Vehicle Speed Signal
40 0.35 YE 5991 Powertrain Relay Coil Control
41-43 - - Not Available
44 0.35 PU 1589 Fuel Level Sensor Signal
45 - - Not Available
46 0.35 D-BU 1809 Brake Booster Vacuum Sensor (5.3L)
47 0.35 D-BU 1161 APP Sensor 1 Signal
48 0.35 D-GN 890 Fuel Tank Pressure Sensor
49 0.35 L-BU 1162 App Sensor 2 Signal
50 - - Not Available
51 0.5 PK/BK 429 Air Injection Reaction Solenoid Relay Coil Control (4.2L)
52 - - Not Available
53 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control
54 - - Not Available
55 0.35WH 1310 EVAP Canister Vent Solenoid Control
56 0.35 YE/BK 625 Starter Enable Relay Control
Connector Part Information 
  • OEM: 13587097 (LL8)/13574282 (LH6/LS2)
  • Service: 88988373
  • Description: 56-Way F Receptacle 0.64 Series Sealed (BU)
Terminal Part Information 
  • Pins: 1-2, 4, 9, 12-13, 16, 18, 20-22, 24-25, 30-37, 39-40, 44, 46-49, 53, 55-56
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 7, 19, 51
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
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.
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