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Home >> Cadillac >> 2013 >> XTS FWD, Trans Mfr CD 6T75/M7V >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Object Detection System) >> Diagnostic Information and Procedures >> DTC B0958, B0959, B0960, or B0961 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Scan tool must be disconnected for steps 1 and 2 to allow module to power down.
  1. Ignition OFF for 1 minute, disconnect the harness connector at the appropriate B78 rear object sensor.
  2. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K41 parking assist control module.
  3. Ignition ON, transmission in REVERSE, test for 7.5-9.0 V between the 8 V reference circuit terminal 1 and ground.
    • If less than the specified range, test the 8 V reference circuit for an open/high resistance. If the circuit tests normal, replace the K41 parking assist control module.
    • If greater than the specified range, test the 8 V reference circuit for a short to voltage. If the circuit tests normal, replace the K41 parking assist control module.
  4. Ignition OFF, remove the malfunctioning object sensor and swap locations with another properly functioning rear object sensor. Connect the harness connector at both sensors.
  5. Ignition ON, verify the DTC is set for the new location in which the malfunctioning sensor is installed.
    • If the DTC does not set for the new location, test the signal circuit terminal 3 for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the K41 parking assist control module.
  6. If the DTC sets for the new location in which the malfunctioning sensor is installed, replace the appropriate rear object sensor.
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