Speed PRO Steering Solenoid Over-Temperature
NOTE:
After making any repairs, perform SPEED PROPORTIONAL STEERING SYSTEM VERIFICATION TEST
under VERIFICATION TESTS.
- Turn ignition off. Connect scan tool to Data Link Connector (DLC). Start engine. Turn steering wheel and observe amount of steering assist. Using scan tool, de-activate Speed Proportional Steering (SPS) solenoid for 15 seconds while turning steering wheel and observing amount of steering assist. If steering power assist is unchanged once SPS solenoid is de-activated, go to next step. If steering has less power assist once SPS solenoid is de-activated, fault may be intermittent. Check related wiring and connectors for poor connections or damage to wiring harness. See WIRING DIAGRAMS . Repair any problems found as necessary. If no problems are found, check if any Technical Service Bulletins (TSBs) apply to vehicle. If no TSBs apply, test is complete.
- Turn ignition off. Disconnect SPS solenoid connector. Measure resistance between SPS solenoid terminals (component side). If resistance is 5.7-6.3 ohms at 68°F (20°C), leave SPS solenoid connector disconnected, and go to next step. If resistance is not 5.7-6.3 ohms at 68°F (20°C), replace SPS solenoid.
- Check related wiring and connectors for poor connections or damage to wiring harness. See WIRING DIAGRAMS . Repair any problems found as necessary. If no problems are found, check if any Technical Service Bulletins (TSBs) apply to vehicle. If no TSBs apply, replace Body Control Module (BCM).