2010 Cadillac CTS Sedan AWD V6-3.6L Page 599
瀚慖f less than the specified value, test the signal circuits for a short to voltage or an open/high resistance. If the circuits test normal, replace
the BCM.
4. Ignition OFF, disconnect the X1 harness connector at the BCM.
5. Test for infinite resistance between ground and the signal circuit terminals listed below:
* Steering wheel control switch signal circuit terminal 6 - left switch
* Steering wheel control switch signal circuit terminal 2 - right switch
瀚慖f less than the specified value, test the signal circuits for a short to ground.
6. Ignition ON, test for less than 1 volt between ground and the voltage reference circuit terminal 5 at the left steering wheel control switch.
瀚慖f greater than the specified range, test the voltage reference circuit for a short to voltage
7. Ignition ON, test for infinite resistance between ground and the voltage reference circuit terminal 5 at the left steering wheel control switch.
瀚慖f not the specified value, test the voltage reference circuit for a short to ground.
8. Test for less than 1 ohm between the voltage reference circuit terminal 5 at the left steering wheel control switch and the voltage reference
circuit terminal 5 at the right steering wheel control switch.
瀚慖f greater than the specified range, test the voltage reference circuit for a an open/high resistance.
9. If all circuits test normal, test or replace the left or right steering wheel control switch.
Component Testing
1. Disconnect the harness connector at the right or left steering wheel control switch.
2. Connect a DMM between terminal 5 and terminal 6 (left switch) or terminal 2 (right switch) of either the left or right steering wheel control
switches.
瀚慖f any of the resistance measurements for the individual switches are not within the specified resistance values, replace the left or right
steering wheel control switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Wheel Control Switch Assembly Replacement (See: Accessories and Optional Equipment/Sensors and Switches - Accessories and
Optional Equipment/Steering Mounted Controls Assembly/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
B3715
DTC B3715
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
