Electronic Throttle Control Module Processor

(P0221) ELECTRONIC THROTTLE CONTROL MODULE PROCESSOR





When Monitored and Set Condition
^ 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 DRBIII, read PCM DTCs.
Is this DTC present?
Yes >> For complete diagnosis of this DTC, refer to (P0120) ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE. Electronic Throttle Control Motor Performance
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.

Note: Check for any Technical Service Bulletins that may apply.

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.