Diagnostic Aids

• Inspect the harness of the MAF sensor to verify that it is not routed too close to the following components:
  • The secondary ignition wires or coils
  • Any solenoids
  • Any relays
  • Any motors
• Inspect the hydro-carbon (HC) filter in the air cleaner assembly for ruptures that would leak charcoal into the air intake, contaminating the sensing element.
• Inspect for any contamination, water intrusion, or debris on the sensing elements of the MAF sensor. If debris is present, clean the sensor. If the sensor cannot be cleaned, replace the sensor.
• A high resistance may cause a driveability concern before this DTC sets.

Reference Information 

Schematic Reference 

ENGINE CONTROLS SCHEMATICS 

Connector End View Reference 

• ENGINE CONTROL MODULE CONNECTOR END VIEWS 
• ENGINE CONTROLS CONNECTOR END VIEWS 

Description and Operation 

AIR INTAKE SYSTEM DESCRIPTION

Electrical Information Reference 

• CIRCUIT TESTING
• CONNECTOR REPAIRS
• TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS
• WIRING REPAIRS

DTC Type Reference 

POWERTRAIN DIAGNOSTIC TROUBLE CODE (DTC) TYPE DEFINITIONS 

Scan Tool Reference 

• SCAN TOOL DATA LIST - ENGINE CONTROLS - 3.6L (LY7) 
• SCAN TOOL DATA DEFINITIONS - ENGINE CONTROLS - 3.6L (LY7) 
• SCAN TOOL OUTPUT CONTROLS - ENGINE CONTROLS - 3.6L (LY7)