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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (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 2007 Cadillac SRX. 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. Measure and record the voltage at the battery terminals. Ignition ON, measure the voltage between the accessory voltage circuit terminal 2 and the ground circuit terminal 3. Verify that the voltage readings do not differ more than 1 volt.
    • If greater than 1 volt, test the accessory voltage circuit and the ground circuit for an open/high resistance. If the circuits test normal, replace the TDM.
  3. Refer to Charging System Test .
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