Circuit/System Verification
- Operate the vehicle at idle and at various engine speeds and load ranges while observing the CMP Variance, Desired CMP, and CMP Angle parameters with a scan tool.
- The CMP variance should remain less than or equal to 1 degree unless the CMP actuator is being commanded. If the CMP actuator is commanded, the CMP variance will rise for 1-2 seconds until the CMP Angle parameter matches the Desired CMP parameter. The CMP variance should again return to less than or equal to 1 degree.
- If the CMP variance remains more than 1 degree for more than 3 seconds, continue with the Circuit/System Testing.