Operation CHARM: Car repair manuals for everyone.

With Speed Density

Mass Air Flow (MAF) / Manifold Air Temperature (MAT) Sensor:





REMOVE
1. Electrical connector
2. Clamps
3. Mass Air Flow (MAF) Sensor

INSTALL
1. MAF Sensor
2. Clamps
3. Electrical connector

NOTICE: Before starting engine do Idle Learn Procedure
- Install Tech 1 Scan tool.
- Ignition ON, engine OFF.
- Select Idle Air Control (IAC) SYSTEM, then IDLE LEARN in the MISC TEST mode.
- Proceed with idle learn as directed.
This procedure allows the Electronic Control Module (ECM) memory to be updated with the correct IAC valve pintle position for the vehicle and provides for a stable idle speed.

NOTICE: Vehicles with Speed Density Update do not use Mass Air Flow (MAF) readings. Their Engine Control Modules (ECM)s have been modified.