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Home >> Isuzu >> 1995 >> Trooper LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.2L >> Self-Diagnostic System >> Retrieving Codes
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Retrieving Codes

NOTE: Codes can also be retrieved using a scan tester. Trouble codes may also be referred to as Diagnostic Trouble Codes (DTCs).
  1. The MIL will come on when ignition is on and engine is not running. When engine is started, MIL should go off. If light remains on while engine is running, a trouble code is present.
  2. If light does not come on with ignition on and engine off, check MIL circuit before continuing. See DIAGNOSTIC CIRCUIT CHECK under CODE CHARTS if MIL fails to operate.
  3. To retrieve codes, install jumper wire between DLC terminals No. 1 and 3. DLC is located behind center console, just right of accelerator pedal.See Fig 1 .
    Fig 1: Identifying DLC (ALDL) Connector Terminals
    G93G79398Courtesy of ISUZU MOTOR CO.
  4. Turn ignition on and count number of flashes from MIL to identify codes. See Fig 2 . Each code will be flashed 3 times starting with lowest code number.
  5. If system is operating properly (with no trouble codes present), Code 12 should be displayed with ignition on and engine off. This indicates diagnostic system is capable of storing codes and providing diagnostic information. Once all codes are displayed, cycle will repeat. Remove jumper wire from DLC after codes have been retrieved.
Fig 2: Code Display (Typical)
G95F31067Courtesy of ISUZU MOTOR CO.
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