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Home >> Pontiac >> 2009 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC B1424 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Pontiac Torrent and 2008 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the TDM.
  2. Verify that there is less than 1.0 ohm between the ground circuit terminal 3 and the negative terminal of the battery.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON. measure the voltage between the B+ circuit terminal 1 and the ground circuit terminal 3. Verify that the difference between the voltage at the TDM connector and the voltage at the battery terminals is less than 1 volt.
    • If greater than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
  4. If all circuits test normal, replace the TDM.
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