P2072-ELECTRONIC THROTTLE CONTROL SYSTEM - ICE BLOCKAGE
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
- Set Condition:
The PCM detects that the throttle plate is stuck during extremely cold ambient temperature operation. The PCM will initiate a throttle de-icing procedure, and if the throttle blade still doesn't move, this DTC will set. The MIL will not illuminate. The vehicle will be in Limp home condition, limiting rpm and vehicle speed.
| Possible Causes |
| THROTTLE PLATE OBSTRUCTION |
Diagnostic Test
1. THROTTLE BODY INSPECTIONIgnition on, engine not running.
With a scan tool, select View DTCs. Record the related Freeze Frame data.
NOTE: Diagnose any other DTCs before continuing.
NOTE: This DTC will set in extreme cold ambient temperatures when the PCM detects that the throttle plate is stuck. By the time the vehicle is serviced, the condition may be corrected.
Turn the ignition off.
Remove the air cleaner assembly.
Check for any signs of a foreign material (ice or dirt) on the throttle plate or in the throttle bore that can cause the throttle plate to stick.
Were any problems found?
Yes
- Repair as necessary. It the throttle blade is frozen, allow the throttle body to thaw naturally in a warm location.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).
No
- Test complete.