(P0221) 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 Assembly do not correlate to the MAP Sensor signal.

POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
THROTTLE POSITION SENSOR SIGNAL CIRCUIT OPEN
5-VOLT SUPPLY CIRCUIT OPEN
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
THROTTLE POSITION SENSOR GROUND CIRCUIT OPEN
THROTTLE POSITION SENSOR #1 SIGNAL CIRCUIT SHORTED TO TP SENSOR #2 SIGNAL CIRCUIT
THROTTLE BODY ASSEMBLY
POWERTRAIN CONTROL MODULE

Diagnostic Test
1. CHECK FOR CURRENT DTC





Turn the ignition on.
With the DRB III, read the PCM DTCs.
Is this DTC present?
Yes>> For complete diagnosis of this DTC, 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.

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
No>> The condition that caused this DTC to set is currently
not present. Inspect the related wiring harness for a possible intermittent condition.