2010 Cadillac CTS Sedan AWD V6-3.6L Page 399
DTC B1516 08 could be set by overcharging with a battery charger or jump starting.
Reference Information
Schematic Reference
Starting and Charging Schematics (See: Starting and Charging/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Charging System Description and Operation (See: Starting and Charging/Charging System/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
B1516 08
1. Ignition OFF, disconnect the harness connector at the battery current sensor.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ohms between the low
reference circuit terminal B and ground.
瀚慖f greater than specified range , test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
3. Ignition ON, test for 4.8-5.2 V between the 5-volt reference circuit terminal A and ground.
瀚慖f less than the specified range , test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests, normal
replace the BCM.
瀚慖f greater than the specified range , test the 5-volt reference circuit for a short to voltage. If the circuit tests, normal replace the BCM.
4. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the BCM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
5. If all circuits test normal, test or replace the battery current sensor.
B1516 66
1. Verify that the battery current sensor is installed securely around the negative battery cable, with the tape tab pointing away from the negative
terminal on the battery.
瀚慖f the battery current sensor is not installed correctly, remove and reinstall the sensor properly.
2. Replace the battery current sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Battery Current Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Battery Current Sensor/Service and
Repair) for current sensor replacement
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
