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Home >> Pontiac >> 2009 >> Torrent Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 168 (Data Communication System) >> Diagnostic Information and Procedures >> Scan Tool Does Not Power Up >> Circuit/System Testing
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Circuit/System Testing

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  1. Test for less than 2.0 ohms between the ground circuits terminal 4 of the DLC and ground, and terminal 5 of the DLC and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 16 at the DLC and ground.
    • If the test lamp does not illuminate, test the voltage supply circuit for a short to ground or an open/high resistance.
  3. If all circuits test normal, refer to the scan tool/CANdi module user guide.
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