2010 Cadillac Truck SRX FWD V6-3.0L Page 841
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, with a scan tool, command the Damper Actuator Increase and Decrease while observing the Damper Actuator Command parameter.
The parameter should vary between 0-1000 mA. Listen/feel the Q37 shock absorber actuator. The component should activate when changing
between the commanded states.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate Q37 shock absorber actuator.
2. Perform this setup step in the following order:
1. Connect a test lamp and ammeter in series between both Q37 shock absorber actuator harness connector control circuit terminals.
2. Ignition ON, with a scan tool, attempt to clear all K19 suspension control module DTC's (codes may not clear).
3. With a scan tool, command the Damper Actuator to Increase the amperage to approximately 400 mA and Decrease to 0 mA while comparing
the ammeter displayed values and scan tool Damper Actuator Command parameter displayed values. Verify the following:
* The test lamp is illuminated.
* The ammeter displayed values and scan tool Damper Actuator Command parameter displayed values change and are simultaneously
within 15 mA of each other.
瀚慖f the test lamp is not illuminated and/or the values are not within the specified range, test both control circuits for a short to voltage, short
to ground, or open/high resistance. If all circuits test normal, replace the K19 suspension control module.
4. If all circuits test normal, test or replace the Q37 shock absorber actuator.
Component Testing
Static Test
1. Ignition OFF, disconnect the harness connector at the appropriate Q37 shock absorber actuator.
2. Test for 2-3 ohm between the Q37 shock absorber actuator control terminals.
瀚慖f not within the specified range, replace the Q37 shock absorber actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Strut, Strut Component, or Spring Replacement (See: Steering and Suspension/Suspension/Suspension Spring ( Coil / Leaf )/Service and
Repair/Front Suspension Coil Spring)
* Shock Absorber Replacement (See: Steering and Suspension/Suspension/Suspension Strut / Shock Absorber/Service and Repair/Rear
Suspension Shock Absorber)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for suspension control module replacement, setup,
