Onvehicle Inspection


• Perform the MAF meter inspection according to the procedures below.

• Only replace the MAF meter when both the LONG FT#1 value and MAF value in the DATA LIST (with the engine stopped) are not within the normal operating range.


(a) Perform confirmation driving pattern.

(1) Connect the intelligent tester to the DLC3.

(2) Turn the ignition switch to the ON position.

(5) Start the engine and warm it up with all accessory switches OFF (until the engine coolant temperature is 75°C (167°F) or more).

(6) Drive the vehicle at 50 km/h (31 mph) or more for 3 to 5 minutes (*1).

(b) Read values using the intelligent tester (LONG FT#1).

(1) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / LONG FT#1.

(2) Read the values displayed on the tester. Standard value:

Within -15 to +15 % If the result is not within the specified range, perform the inspection below.

(Vehicle Speed)

(Vehicle Speed)


(c) Read values using the intelligent tester (MAF). NOTICE:

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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