2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 681
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the S70L Steering Wheel Controls Switch - Left and the S70R Steering Wheel Controls
Switch - Right.
2. Ignition ON, test for B+ between the voltage reference circuit terminal 1 and ground.
瀚慖f less than the specified value, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests
normal, replace the K9 Body Control Module.
3. Test for B+ between the voltage reference circuit terminal 1 and the signal circuit terminals listed below:
* Signal circuit terminal 6 - S70L Steering Wheel Controls Switch - Left
* Signal circuit terminal 2 - S70R Steering Wheel Controls Switch - Right
瀚慖f less than the specified value, test the signal circuits for a short to voltage or an open/high resistance. If the circuit tests normal, replace
the K9 Body Control Module.
4. Ignition OFF, disconnect the X3 harness connector at the K9 Body Control Module.
5. Test for infinite resistance between the signal circuit terminals listed below and ground.
* Signal circuit terminal 6 - S70L Steering Wheel Controls Switch - Left
* Signal circuit terminal 2 - S70R Steering Wheel Controls Switch - Right
瀚慖f less than the specified value, test the signal circuit for a short to ground.
6. Ignition ON, test for less than 0.3 V between the signal circuit terminal 5 at the S70R Steering Wheel Controls Switch - Right and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage.
7. Test for infinite resistance between the signal circuit terminal 5 at the S70R Steering Wheel Controls Switch - Right and ground.
瀚慖f not the specified value, test the signal circuit for a short to ground.
8. Test for less than 5 ohm between the signal circuit terminal 5 at the S70R Steering Wheel Controls Switch - Right and the signal circuit
terminal 5 at the S70L Steering Wheel Controls Switch - Left.
瀚慖f greater than the specified range, test the signal circuit for an open/high resistance.
9. If all circuits test normal, test or replace the S70R Steering Wheel Controls Switch - Right or S70L Steering Wheel Controls Switch - Left.
Component Testing
Static Test
Right Steering Wheel Switch
1. Disconnect the harness connector at the S70R Steering Wheel Controls Switch - Right.
2. Test the resistance between the terminals 1 and 2 of the S70R Steering Wheel Controls Switch - Right.
瀚慖f any of the resistance measurements for the individual switches are not within the specified resistance values, replace the S70R Steering
Wheel Controls Switch - Right.
Left Steering Wheel Switch
1. Disconnect the harness connector at the S70L Steering Wheel Controls Switch - Left.
2. Test the resistance between the terminals 5 and 6 of the S70L Steering Wheel Controls Switch - Left.
瀚慖f any of the resistance measurements for the individual switches are not within the specified resistance values, replace the S70R Steering
Wheel Controls Switch - Right.
