2008 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Generic Scan Tool (GST) Function: Function

GENERIC SCAN TOOL FUNCTION CHART

Diagnostic test mode Function
Service $01 READINESS TESTS This diagnostic service gains access to current emission-related data values, including analog inputs and outputs, digital inputs and outputs, and system status information.
Service $02 (FREEZE DATA) This diagnostic service gains access to emission-related data value which were stored by ECM during the freeze frame. For details, refer to "FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA ".
Service $03 DTCs This diagnostic service gains access to emission-related power train trouble codes which were stored by ECM.
Service $04 CLEAR DIAG INFO This diagnostic service can clear all emission-related diagnostic information. This includes:
  • Clear number of diagnostic trouble codes (Service $01)
  • Clear diagnostic trouble codes (Service $03)
  • Clear trouble code for freeze frame data (Service $01)
  • Clear freeze frame data (Service $02)
  • Reset status of system monitoring test (Service $01)
  • Clear on board monitoring test results (Service $06 and $07)
Service $06 (ON BOARD TESTS) This diagnostic service accesses the results of on board diagnostic monitoring tests of specific components/systems that are not continuously monitored.
Service $07 (ON BOARD TESTS) This diagnostic service enables the off board test drive to obtain test results for emission-related powertrain components/systems that are continuously monitored during normal driving conditions.
Service $08 - This diagnostic service can close EVAP system in ignition switch ON position (Engine stopped). When this diagnostic service is performed, EVAP canister vent control valve can be closed. In the following conditions, this diagnostic service cannot function.
  • Low ambient temperature
  • Low battery voltage
  • Engine running
  • Ignition switch OFF
  • Low fuel temperature
  • Too much pressure is applied to EVAP system
Service $09 (CALIBRATION ID) This diagnostic service enables the off-board test device to request specific vehicle information such as Vehicle Identification Number (VIN) and Calibration IDs.
Factory Service Tools

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When to See a Mechanic

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.

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