P062C

P062C-ETC LEVEL 2 MPH PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

While in cruise control, this diagnostic verifies that vehicle speed stays within 5 MPH (8 KPH) of cruise control setpoint. The diagnostic will abort if during this condition engine speed is decreasing by more than 13 RPM/second. This is meant to detect a condition when the vehicle is travelling downhill as that could cause an increase in overall vehicle speed. This diagnostic will abort if the driver goes out of cruise mode by pressing the brake or accelerator pedal. Cruise will be disabled the rest of the drive cycle (until key off).

- When Monitored:
Engine in cruise control mode but not travelling downhill.

- Set Condition:
Vehicle speed is more than 5 MPH (8 KPH) over targeted cruise control speed.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.
POWERTRAIN CONTROL MODULE
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.

Are there other DTCs?

Yes

- Repair other DTCs first.

No

- Replace the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.