Electronic Throttle Control Module Processor

P0221 - ELECTRONIC THROTTLE CONTROL MODULE PROCESSOR

P0221 - Electronic Throttle Control Module Processor:

WHEN MONITORED
Ignition on with no MAP Sensor DTCs set.

SET CONDITION
TP Sensor signals in the Throttle Body do not correlate to the MAP Sensor signal.

POSSIBLE CAUSES
- Throttle position sensor sweep
- Throttle position sensor signal circuit short to voltage
- Throttle position sensor signal circuit open
- 5-volt supply circuit open
- 5-volt supply circuit short to ground
- Throttle position sensor ground circuit open
- TP sensor signal 1 circuit short to TP sensor signal 2 circuit
- Throttle body
- Powertrain control module


DIAGNOSTIC TEST




1. CHECK FOR CURRENT DTC

Turn the ignition on.
With the DRB III(R), read PCM DTCs.

Q: Is this DTC present?

YES: For complete diagnosis of this DTC, refer to (P0120) ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE. P0120

NO: Go To 2

2. INTERMITTENT WIRING AND CONNECTORS

The conditions necessary to set this DTC are not present at this time.

NOTE:
- Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.
- Check for any Technical Service Bulletins that may apply.

Q: Were there any problems found?

YES: Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

NO: The condition that caused this DTC to set is currently not present. Inspect the Related wiring harness for a possible intermittent condition.