LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Secondary And Configurable Customer Controls >> Diagnostic Information and Procedures >> Steering Wheel Controls Inoperative >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

IMPORTANT: It is recommended that component testing is performed before circuit testing when diagnosing steering wheel controls.
CAUTION: Refer to SIR Caution .
  1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
  2. Ignition ON, test for 11.5-12.5 volts between the 12-volt reference circuit terminal 3 and ground.
    • If less than specified value, test the 12-volt reference circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the BCM.
    • If greater than the specified value, test the 12-volt reference circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  3. Test for the 0 volts between the signal circuit terminal 4 and ground.
    • If greater than specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  4. Test for 11.5-12.5 volts between the 12-volt reference circuit terminal 3 and the signal circuit terminal 4.
    • If less than specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
  5. Ignition OFF, disconnect the harness connector C1 at the BCM.
  6. Test for infinite resistance between the signal circuit terminal 6 and ground.
    • If less than specified value, test the signal circuit for a short to ground.
  7. If all circuits test normal, test or replace switch.
scientia non olet · About LEMON Manuals