DTC Confirmation Test "B" (Using Generic Scan Tool)
NOTE:
Use the following test to check overall function of MAF sensor circuit. During this test, 1st trip DTC may not be confirmed.
- Start engine and warm it up to normal operating temperature.
- Select MODE 1. Check for linear mass airflow sensor signal value rise in response to increases in engine speed to 4000 RPM. If not good, go to DIAGNOSTIC PROCEDURE .