1000 - 1999: 1315

1315-ELECTRONIC THROTTLE CONTROL SYSTEM - ICE BLOCKAGE / OPEN CIRCUIT





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Ignition on.

- Set Condition:
The PCM recognizes the Throttle plate is stuck during extremely cold Ambient Temperature operation. The throttle plate goes through a de-icing procedure. If the throttle blade still doesn't move this fault sets. The MIL will not illuminate. ETC light will illuminate. The vehicle will be in Limp home condition, limiting rpm and vehicle speed.





Diagnostic Test

1. THROTTLE BODY INSPECTION
Ignition on, engine not running.
With a scan tool, view DTCs and record the related Freeze Frame data.

NOTE: This DTC sets in extreme cold Ambient Temperatures with the throttle plate stuck by the time the vehicle gets to the dealership the condition may be corrected.

NOTE: Diagnose any other DTCs that may also be set before continuing.

Turn the ignition off.
Remove the Air Cleaner Assembly from the Throttle Body.
Check for any signs of a foreign material (ice or dirt) on the Throttle Plate or in the bore causing the Throttle Plate to stick.
Is the throttle blade still stuck because it is frozen?

Yes

- Allow the Throttle Body to thaw naturally in a room temperature climate.
- Perform the Powertrain Verification Test. Powertrain Verification Test.

No

- Go To 2

2. ETC MOTOR (+) CIRCUIT OPEN




Turn the ignition off.
Measure the resistance of the ETC Motor (+) circuit from the Throttle Body harness connector to the ECM harness connector.
Is the resistance below 5.0 ohms?

Yes

- Go To 3

No

- Repair the open in the ETC Motor (+) circuit.
- Perform the Powertrain Verification Test. Powertrain Verification Test.

3. ETC MOTOR (-) CIRCUIT OPEN




Measure the resistance of the ETC Motor (-) circuit from the Throttle Body harness connector to the ECM harness connector.
Is the resistance below 5.0 ohms?

Yes

- Test Complete. The conditions that originally set this DTC are not present at this time.
- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.Checking for an Intermittent DTC.

No

- Repair the open in the ETC Motor (-) circuit.
- Perform the Powertrain Verification Test. Powertrain Verification Test.