Code C1658: CVRSS Control Module Calibration Fault
- Perform CVRSS system check. See CVRSS SYSTEM CHECK under DIAGNOSIS & TESTING. After performing CVRSS system check, go to next step.
- Install scan tool. Turn ignition on, with engine off. Calibrate NEW CVRSS control module. See CALIBRATING CVRSS CONTROL MODULE under ADJUSTMENTS. Clear codes. Wait 30 seconds, and then display CVRSS codes. If Code C1658 is set, go to next step. If Code C1658 is not set, see NOTES ON INTERMITTENTS under DIAGNOSIS & TESTING.
- Calibrate NEW CVRSS control module. See CALIBRATING CVRSS CONTROL MODULE under ADJUSTMENTS. Clear codes. Wait 30 seconds, and then display CVRSS codes. If Code C1658 is set, go to next step. If Code C1658 is not set, see NOTES ON INTERMITTENTS under DIAGNOSIS & TESTING.
- Turn ignition off. Replace CVRSS control module. Reinstall/reconnect all components/connectors. Install scan tool. Turn ignition on, with engine off. Calibrate NEW CVRSS control module. See CALIBRATING CVRSS CONTROL MODULE under ADJUSTMENTS.