P2101

P2101-ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the vehicle running, ETC Motor not in Limp Home mode, and the TPS adaptation is complete.

- Set Condition:
The PCM recognizes too large of an error between the actual position of the Throttle Plate and the Set Point position. One trip fault and the code will set within 5 seconds. Three good trips to turn off the MIL ETC light is flashing.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.

Diagnostic Test

1. ACTIVE DTC
NOTE: When this DTC is Active the engine speed, torque, and vehicle speed are limited to a Limp in mode.

NOTE: Before continuing visually inspect the throttle blade and bore for any obstructions. Icing of the throttle body may have caused this code to set.

NOTE: Low battery voltage can also cause excessive current draw, in very hot and very cold ambient temperature. Make sure the battery can pass a load test before continuing.

NOTE: Diagnose any 5-Volt Supply, Battery, and TP Sensor DTCs before continuing.

Ignition on, engine not running.
With a scan tool, select View DTCs.
Is the DTC Active at this time?

Yes

- Go to 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition.

2. THROTTLE POSITION WITHIN 2° DEGREES OF DESIRED THROTTLE POSITION
Start the engine.
Allow the engine to reach normal operating temperature.
With a scan tool, monitor the Actual Throttle Position and Desired Throttle Position.
Compare the Actual Throttle Position and the Set Point Throttle Position.
Is the Actual Throttle Position within 2° degrees of the Desired Throttle Position?

Yes

- Go to 3

No

- Replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

3. ETC OPERATION
Ignition on, engine not running.
With a scan tool, perform the ETC Throttle Follower Test.

NOTE: It may be necessary to use a mirror to see the throttle blade.

Observe the throttle blade.

NOTE: Make sure the motion of the throttle blade is smooth and that it opens and closes.

Did the ETC motor operate properly?

Yes

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition.

No

- Replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.