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Home >> Buick >> 2017 >> Envision Base >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P058A-P058F, P16D4-P16D6, P16DC-P16DF, or P16E1-P16E3: Battery Sensor Module >> Circuit/System Testing

Circuit/System Testing

NOTE:

Some control module ground circuits may require up to 20 min after the ignition is turned off before achieving a resistance reading of less than 5 Ω. In most cases the readings will drop below 20 Ω within 1 min indicating the control module is going to sleep.

  1. Ignition OFF and all vehicle systems OFF.
  2. Test for less than 2 Ω between the Negative Battery post and the B110 Battery Sensor Module clamp
    • If 2 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 2 Ω 
  3. Disconnect the harness connector at the B110 Battery Sensor Module.
  4. Verify a test lamp illuminates between B+ circuit terminal 2 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the B110 Battery Sensor Module.
    • If the test lamp illuminates 
  5. Replace the B110 Battery Sensor Module.
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