Same as actual Intake Air Temperature IAT

Result

Temperature Displayed

Proceed To

-40°C (-40°F)

A

140°C (284°F) or higher

B

Same as actual IAT

If there is an open circuit, the intelligent tester indicates -40°C (-40°F).

If there is a short circuit, the intelligent tester indicates 140°C (284°F) or higher.

Go to step 4

CHECK FOR INTERMITTENT PROBLEMS

READ VALUE OF INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)

(a) Disconnect the M1 Mass Air Flow (MAF) meter connector.

(b) Connect terminals THA and E2 of the MAF meter wire harness side connector.

(c) Connect an intelligent tester to the DLC3.

(d) Turn the ignition switch ON.

(f) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / INTAKE AIR.

(g) Read the value displayed on the tester. Standard:

(h) Reconnect the MAF meter connector.

CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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