Inspection Procedure

NOTE: Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Are there any other codes (besides DTC P0101) being output?

PREPARATION:

Connect the hand-held tester or the OBD II scan tool to the DLC3.
Turn the ignition switch to ON and turn the hand-held tester or the OBD II scan tool ON.
On the hand-held tester, select the following menu items DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

CHECK:

Read DTCs using the hand-held tester or the OBD II scan tool.

Result:

INTAKE AIR TEMPERATURE MALFUNCTION

Display (DTC output)	Proceed To
P0101 and other DTCs	A
P0101	B

NOTE: If any other DTCs besides P0101 are output, perform troubleshooting for those DTCs first.

B : Replace mass air flow meter.
A : Go to relevant DTC chart (See DIAGNOSTIC TROUBLE CODE CHART ).